Answer:
1/4n - 6 < 96
Step-by-step explanation:
Im a tutor but the way it is worded hurts my brain
The diagram shows the number of instruments in the string section of an orchestra. There are 7 cellos, 4 double basses, and 11 each of first violins, second violins, and violas. Use ratio notation and decimal notation to describe the relationship between the number of double basses and the total number of instruments in the string section.
The ratio notation and decimal notation to describe the relationship between the number of double basses and the total number of instruments in the string section are:
4 : 44 and 0.01.
What is a ratio?The ratio shows how many times one value is contained in another value.
Example:
There are 3 apples and 2 oranges in a basket.
The ratio of apples to oranges is 3:2 or 3/2.
We have,
The number of instruments in the string section.
= 7 cellos + 4 double basses + 11 first violins + 11 second violins + 11 violas
= 7 + 4 + 11 + 11 + 11
= 44
Now,
The number of double basses.
= 4
Now,
Ratio notation to describe the relationship between the number of double basses and the total number of instruments in the string section is.
= 4 : 44
The decimal notation to describe the relationship between the number of double basses and the total number of instruments in the string section is.
= 4/44
= 1/11
= 0.01
Thus,
The ratio notation is 4:44.
The decimal notation is 0.01.
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Choose the correct solution graph for the inequality -9x> 54
Answer:
x < -6
Step-by-step explanation:
-9x > 54
Divide both sides by -9, this process will switch the inequality sign:
[x < -6]
Can the numerical value of standard deviation be zero?
In rare instances, the numerical value of the standard deviation might be 0. The standard deviation, defined as the square root of the variance, is a measure of the dispersion of a collection of data. A collection of data's variance is the average of the squared departures from the mean.
What is standard deviation?The standard deviation represents the average level of variation in your dataset. It informs you how far each number deviates from the mean on average. A high standard deviation implies that values are spread out from the mean, whereas a low standard deviation shows that values are close to the mean. The standard deviation quantifies the data's dispersion around the mean value. It is useful for comparing data sets that have the same mean but a different range. The mean of the following two numbers, for example, is the same: 15, 15, 15, 14, 16 and 2, 7, 14, 22, 30. The second, on the other hand, is plainly more dispersed.
Here,
When all of the data points in a collection are equal, the deviations from the mean are all 0, and so the variance is likewise zero. When the variance is zero, the square root of the variance (the standard deviation) is likewise zero. As a result, the standard deviation can only be 0 if all of the data points in the collection are equal.
In other words, the standard deviation is 0 when there is no fluctuation or dispersion in the data.
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– 8g–1+7g2+ – 2g+ – 10g+ – 3g2
Please help!!
When answering please number them
The rationalized surds are;
1) 20 + 5√3/13
2) 12√7 - 24/7
3) 6√2 + 6√3/5
What is the conjugate of a surd?
The surd has to do with an irrational number. In this case we are asked to find the value of the following surds.
1) The conjugate of the denominator is; 4 + √3 and the rationalize we have;
5/4 - √3 * 4 + √3/4 + √3
20 + 5√3/16 + 4√3 - 4√3 - 3
20 + 5√3/13
2) The conjugate of the denominator is; √7 - 2
To rationalize we have;
12/√7 + 2 * √7 - 2/√7 - 2
12√7 - 24/7 -2√7 + 2√7
12√7 - 24/7
3) The conjugate of the denominator is √2 + √3
To rationalize we have;
6/√2 - √3 * √2 + √3/√2 + √3
6√2 + 6√3/2 + √6 - √6 + 3
6√2 + 6√3/5
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Mr. and Mrs. Torres have three pretty daughters, Jane, Jade and Jem. Jane is twice old as Jade, and Jem is 5 years younger than Jane. If n represents the age of Jade and the sum of their ages is 55, then ;
1. Who among the children is the youngest?
2, Write an expression representing the age of Jane.
3. Who among the children is the oldest?
4. How old is Jade?
5. Write an equation representing the sum of ages of Jane, Jade, and Jem.
1. The youngest is Jade she is 12 years old.
2. The expression representing the age of Jane is:- Jane = 2 x Jade
3. The oldest age is Jane she is 24 years old.
4. The age of Jade is 12 years.
5. The expression for the sum of the ages will be:-
Jane + Jade + Jem = 55
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Mr and Mrs Torres have three pretty daughters, Jane, Jade and Jem. Jane is twice old as Jade, and Jem is 5 years younger than Jane. If n represents the age of Jade and the sum of their ages is 55.
From the given data following equations can be made:-
Jane = 2 x Jade
Jem = Jane - 5
Jane + Jade + Jem = 55
From the three equations the following equation can be made:-
2 Jade + Jade + 2Jade - 5 = 55
4Jade - 5 = 55
4Jade = 60
Jade = 60 / 5 = 12 years
Jane = 2 x Jade = 2 x 12 = 24 years
Jem = Jane - 5 = 24 - 5 = 19 years
The answers can be written as:-
1. Jade, who is 12 years old, is the youngest.
2. Jane's age is represented by the formula Jane = 2 x Jade.
3. Jane, who is 24 years old, is the oldest.
4. Jade is twelve years old.
5. Jane + Jade + Jem = 55 will be the formula for the total age.
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Bob is thinking about leasing a car. the lease comes with an interest rate of 8%. determine the money factor that will be used to calculate bob’s payment. a. 0.00033 b. 0.00192 c. 0.00333 d. 0.01920 please select the best answer from the choices provided a b c d
The money factor that will be used to calculate bob’s payment is C) 0.00333
Money Factor can be converted to Annual Percentage Rate (APR) and vice versa.
So the money factor can be solved:
APR = 2400 x Money Factor
Money Factor = APR / 2400
Money Factor = 8% / 2400 = 0.0033333
Definition of APRBasically, APR is short for Annual Percentage Rate, which means an annual percentage. APR is widely applied to the money you are going to borrow. Like when you apply for a motor vehicle loan, credit card, consumer loan, loan for education, or home ownership loan.
The APR will display a calculation of the amount of interest that will be charged if you apply for a loan. The lower the APR, the less interest you will have to pay.
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what kind of question usually produces a wide variety of responses by allowing respondents to answer in whatever way seems appropriate to them?
A closed-ended question is one that doesn't permit many different answers.
Closed-ended questions are those that can only be answered by choosing one of a small number of possibilities. These questions are typically multiple-choice with a single-word response, such as "yes" or "no," or they can use a rating system (e.g. from strongly agree to strongly disagree).
Close-ended questions, such as "yes/no" or multiple choice questions with predetermined answers, are questions that demand a certain response from the respondent. Closed-ended inquiries are frequently used to collect quantitative data from respondents.
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The base, or rate of change, is
.
The domain is
.
Initial value is 1, The base, or rate of change, is 1/3 and the domain is All real Numbers.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Consider the function:
[tex]y=a(1\pm r)^{m}[/tex]
where m is the number of times this growth/decay occurs,
a = initial amount, and r = fraction by which this growth/decay occurs.
If there is a plus sign, then there is exponential growth happening by r fraction or 100r %
From the graph of the exponential decay function.
The initial value is 1.
The base, or rate of change, is 1/3.
The domain is All real Numbers.
Hence, initial value is 1, The base, or rate of change, is 1/3 and the domain is All real Numbers.
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The given question is incomplete, the complete question is Analyze the graph of the exponential decay function.
The initial value is:
The base, or rate of change is:
The domain is:
consider sequences that consist entirely of $a$'s and $b$'s and that have the property that every run of consecutive $a$'s has even length, and every run of consecutive $b$'s has odd length. examples of such sequences are $aa$, $b$, and $aabaa$, while $bbab$ is not such a sequence. how many such sequences have length 14?
The number of such sequences of strings of length 14 is 172.
Let [tex]$a_n$[/tex] and [tex]$b_n$[/tex] denote, the number of sequences of length n ending in A and B, respectively.
If a sequence ends in an A, then it must have been formed by appending two A's to the end of a string of length (n-2).
If a sequence ends in a B, it must have either been formed by appending one Bs to a string of length (n-1) ending in an A, or by appending two Bs to a string of length (n-2) ending in a B.
Thus, we get the recursions as follows -
[tex]a_n &= a_{n-2} + b_{n-2}[/tex]
[tex]b_n &= a_{n-1} + b_{n-2}[/tex]
By counting further, we find that [tex]$a_1[/tex]= 0, [tex]b_1[/tex] = 1, [tex]a_2[/tex] = 1, [tex]b_2[/tex] = 0.
Similarly, we will get the following table -
Therefore, the number of such strings of length 14 is [tex]$a_{14} + b_{14}[/tex] = 80 + 92 = 172.
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william's town voted on a new speed limit. out of 12 votes, 3 were in favor of the new speed limit. what percentage of the votes were in favor of the new speed limit?
The percentage of votes that were in favour of the new speed limit is 30%.
William's town voted on a new speed limit.
Total votes in town = 10
Total votes in favour = 3
Total votes not in favour = 10 - 3 = 7
We are asked to determine the percentage of votes that were in favour of the new speed limit.
the percentage of votes that were in favour of the new speed limit can be calculated using the formula:
% of votes in favour of speed limit = (Total votes in favour/Total votes in town) x 100
% of votes in favour of speed limit = (3/10) x 100
% of votes in favour of speed limit = 30 %
Hence, the percentage of votes that were in favour of the new speed limit is 30%.
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HELP ME QUICK
Which is a true statement about the diagram?
Am25+ m26 = mz1
Bmz3+ m24+ m25= 180°
C mz1+mz2 = 180°
Dmz2+ mz3 = mz5
The correct statement about the angle measures in the diagram is given as follows:
m < 1 + m < 2 = 180º.
How to obtain the angle measures?To obtain the angle measures for this diagram, we must consider the exterior angle theorem, which states that an angle is supplementary with it's exterior angle.
When two angles are supplementary, it means that the sum of their measures is of 180º.
In this problem, angle 1 is the exterior angle pair of angle 2, hence the correct statement is given as follows:
m < 1 + m < 2 = 180º.
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Please answer this question and explain (screen shot below)
Since Point A is an element of a direct variation, the other points that are elements of this direct variation include the following:
B. [-2, -8].
E. [2, 8].
What is a direct variation?In Mathematics, a direct variation is also referred to as direct proportion and it can be modeled by using the following mathematical expression or function:
y = kx
Where:
y and x are the variables.k represents the constant of proportionality.In direct proportion, the value of x represent an independent variable while the value of y represents the dependent variable. Therefore, an equation that models the situation is given by:
-4 = -k
k = 4
y = 4x
When x = 8, the equation y = 4x is given by:
y = 4(8) = 32.
When x = -2, the equation y = 4x is given by:
y = 4(-2) = -8 (True).
When x = 4, the equation y = -4x is given by:
y = 4(4) = 16.
When x = 2, the equation y = 4x is given by:
y = 4(2) = -8 (True).
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The measures of the angles of a triangle are in the extended ratio 11:5:4. Find the measures of the angles.
Given that in a △ABC, ∠A:∠B:∠C=11:5:4
Let the angles of the given triangle be 11xo,5xo,4xo.
We know that the sum of the angles of a triangle is 180o
11xo+5xo+4xo=180o⇒20xo=180o
xo=12110o=15o
So, the angles of the triangle are 70o,60o,45o.
a frustum of cone is filled with ice cream such that the portion above the cone is a hemisphere. define the variables di
The total volume of the ice cream is -4.76 cubic inches.
The volume of the frustum of a cone can be calculated as follows:
V = (1/3) × π × h × (r1² + r2² + r1 × r2), where r1 and r2 are the radii of the top and bottom base of the cone.
And the volume of a sphere can be calculated as follows:
V = (4/3) × π × r³, where r is the radius of the sphere.
To calculate the total volume of the ice cream, we need to subtract the volume of the cone from the volume of the sphere.
Let's first calculate the radii of the top and bottom base of the cone.
r1 = (di/2) = (1.25/2) = 0.625 in.
r2 = (d0/2) = (2.25/2) = 1.125 in.
Now, we can estimate the volume of the cone.
V_cone = (1/3) × π × h × (r1² + r2² + r1 × r2)
= (1/3) × π × 2 × (0.625² + 1.125² + 0.625 × 1.125)
= 6.45 cubic inches.
Next, let's calculate the radius of the sphere.
r_sphere = (di/2) = (1.25/2) = 0.625 in.
And finally, we can calculate the volume of the sphere.
V_sphere = (4/3) × π × 0.625³
= 1.69 cubic inches.
So, the total volume of the ice cream is given by:
V_ice_cream = V_sphere - V_cone
= 1.69 - 6.45
= -4.76 cubic inches.
Note: Since the volume of the cone is larger than the volume of the sphere, the total volume of the ice cream will be negative, indicating that it is not possible to fill a frustum of a cone with ice cream in the manner described.
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--The given question is incomplete; the complete question is
"A frustum of a cone is filled with ice cream such that the portion above the cone is a hemisphere. Define the variables di=1.25 in., d0=2.25 in., h=2 in., and determine the volume of the ice cream."--
Find the length of the segment to the nearest tenth.
(-4,1),(-3,3)
The length of the segment is approximately 2.2.
How did we get the value?The length of the segment can be found using the Pythagorean theorem.
Given points (x1,y1) and (x2,y2), the length of the segment between them is given by:
√((x2-x1)^2 + (y2-y1)^2)
Plugging in the given points:
√((-3-(-4))^2 + (3-1)^2) = √(1^2 + 2^2) = √5
Rounding to the nearest tenth:
√5 ≈ 2.2
So the length of the segment is approximately 2.2.
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ChatGPT Jan 30 Version. Free Research Preview. Our goal is to make AI systems more natural and safe to interact with. Your feedback will help us improve.
does an underdetermined linear system always have infinitely many solutions? if not, give an example.
A linear system that is underdetermined either has no solution or infinitely many solutions. has an infinite number of solutions and is consistent, for example, (x, y, z) = (1, 2, 2), (2, 3, 2), and (3, 4, 2).
If there are more equations than unknowns in a system of linear equations or a system of polynomial equations, it is said to be underdetermined (in contrast to an overdetermined system, where there are more equations than unknowns). The notion of constraint counting can be used to clarify the vocabulary. It is possible to think of each unknown as a potential degree of freedom. One degree of freedom is constrained by each equation that is added to the system.
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in a random sample of eighteen people, the mean time at lunch was 28.4 minutes with a standard deviation of 8.2 minutes. assuming the data are normally distributed, what would be the 85% confidence interval?
The 85% confidence interval for the mean time at lunch is (25.01, 31.79) minutes.
In a random sample of eighteen people, the mean time at lunch was 28.4 minutes.
Standard deviation of 8.2 minutes.
A common method to calculate the confidence interval for the mean of a normal distribution is to use the Z-score. For a 85% confidence interval, the Z-score is 1.44. Therefore, the confidence interval can be calculated as:
The confidence interval formula in statistics is used to describe the amount of uncertainty associated with a sample estimate of a population parameter.
If [tex]$$n \geq 30$ & Confidence Interval $=\bar{x} \pm z_{\alpha / 2}(\sigma / \sqrt{ n})$ \\[/tex][tex]$$n\le 30$ & Confidence Interval $=\bar{x} \pm z_{\alpha / 2}(\sigma / \sqrt{ n})$ \\[/tex]Where,
n= Number of terms
[tex]$\overline{\mathrm{x}}[/tex]= Sample Mean
[tex]$\sigma[/tex]=Standard Deviation
[tex]$z_{\alpha / 2}[/tex]= Value corresponding to a2 in z table
[tex]$t_{\alpha / 2}[/tex]= Value corresponding to a2 in t table
[tex]$\alpha[/tex]=(1 - Confidence Level /100)
So for the given data, the confidence interval would be:
=28.4 ± 1.44 * 8.2 / √18
=28.4 ± 1.44 * 8.2 / 4.24
=28.4 ± 3.39
=(25.01, 31.79)
Therefore, the 85% confidence interval for the mean time at lunch is (25.01, 31.79) minutes.
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mount everest begins on a plain that is 14,000 feet high, then the summit sits at 29,028 feet. the difference between the height of these two areas is called the .
The elevation gain of Mount Everest is 15,028 feet, a very impressive feat considering it is the highest elevation gain of any mountain in the world.
The difference between the height at the base of Mount Everest, which is 14,000 feet and the summit, which is 29,028 feet is 15,028 feet. This is also known as the elevation gain. It can be calculated using the following formula:
Elevation Gain = Summit Height - Base Height
So in this case, Elevation Gain = 29,028 ft - 14,000 ft
Which gives us: Elevation Gain = 15,028 ft
The elevation gain of Mount Everest is 15,028 feet, a very impressive feat considering it is the highest elevation gain of any mountain in the world. It is also the highest mountain in the world, with the summit standing at an impressive 29,028 feet. This is a testament to the power of nature and the sheer scale of Mount Everest.
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Trey believes there is a correlation between the number of texts sent during class and GPA. He collected data and found that the line of best fit for his data can be modeled by the equation y = 3.8 − 0.4x.
Identify the slope and the type of association.
The slope is −0.4, which indicates a negative correlation.
The slope is 0.4, which indicates a positive correlation.
The slope is −3.8, which indicates a negative correlation.
The slope is 3.8, which indicates a positive correlation.
Answer:
A
Step-by-step explanation:
y = 3.8 − 0.4x.
y = − 0.4x + 3.8
so slope = -0.4 negative slope
intercept = 3.8
Which of the following pairs of sample size n and population proportion p would produce the greatest standard deviation for the sampling distribution of a sample proportion p?
A) n=1,000 and p is close to 0
B) n=1,000 and p is close to 1
C) n=1,000 and p is close to 1/2
D) n=100 and p is close to 0
E) n=100 and p is close to 1/2
The pairs of sample size n and population proportion p would produce the greatest standard deviation is D) n = 100 and p is close to 0
What is the difference between the sample and the population?The entire group about whom you want to make conclusions is referred to as a population.
The particular group from which you will gather data is known as a sample. The sample size is always smaller than the population as a whole.
We know, The standard deviation for a population proportion is, [tex]\sigma_p = \sqrt\frac{p(1-p)}{n}[/tex].
Now, The pairs of sample size n and population proportion p would produce the greatest standard deviation for the sampling distribution of a sample proportion p is when n = 100 and p is close to 0 let's say we took
n = 100 and p = 0.1 then [tex]\sigma_p = \sqrt\frac{p(1-p)}{n}[/tex] will be = 0.09 and when n = 100 and
p = 0.5 then [tex]\sigma_p = \sqrt\frac{p(1-p)}{n}[/tex] = 0.05.
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15. If 15 baseballs weigh 75 ounces, how many baseballs weigh 15 ounces?
Answer:
3
Step-by-step explanation:
If 15 baseballs weigh 75 ounces, then 1 baseball weighs 75/15 = 5 ounces.
So, 15 ounces is equal to 15/5 = 3 baseballs.
a ski resort charges $55 for renting a snowboard or skis and $11 per hour for a lift ticket. If julian spent a total of $121, how many hours was you there
If a ski resort charges $55 for renting a snowboard or skis and $11 per hour for a lift ticket. If julian spent a total of $121. The number of hours is 6.
How to find the number of hour?Let's call the number of hours Julian spent at the ski resort "h".
We know that:
55 (the cost of the equipment rental) + 11h (the cost of the lift ticket) = 121 (the total amount Julian spent).
So we can subtract 55 from both sides to isolate the lift ticket cost:
11h = 121 - 55 = 66
Finally, we divide both sides by 11 to find the number of hours:
h = 66 / 11 = 6
Therefore, Julian was at the ski resort for 6 hours.
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write the number as a quotient of integers to show that it is rational300=
The number 300 can be written as 300/1 as a quotient of integers to show that it is rational.
A rational number is a number of the form p/q, where q not equal to 0 and p and q must be co-primes.
To write a number in the form of quotient of integer, we write it as , where p/q.
Here, 300 can be written as 300/1 or 600/2 .
But we should also take care that p and q must be co-primes.
Co-primes are the pairs of numbers that have only one common factor which is 1.
So, 300 can be written as 300/1
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For what value of q is the equation 9q=610 true?
Answer: 15
Step-by-step explanation:
in a recent survey, the proportion of adults who indicated mystery as their favorite type of book was 0.325. two simulations will be conducted for the sampling distribution of a sample proportion from a population with a true proportion of 0.325. simulation a will consist of 1,500 trials with a sample size of 100. simulation b will consist of 2,000 trials with a sample size of 50.
The sample size for Simulation A is greater than then the sample size for Simulation B and the variability of Simulation A will be less then the variability of Simulation B.
What is sampling distribution ?
An example of a sampling distribution is a probability distribution of a statistic that is derived from repeated sampling of a particular population.
It depicts a spectrum of potential results for a statistic, such as the mean or mode of a variable, for a population.
Given,
Two simulations will be conducted for the sampling distribution of a sample proportion from a population with a true proportion of 0.325.
Simulation A will consist of 1500 trials with a sample size of 100.
Simulation B will consist of 2000 trials with a sample size of 50.
Center for Simulation A and Simulation B will be roughly equal.
Overall Sample size of Simulation A will be
= 1500 * 100 = 150000
Overall Sample size of Simulation B will be
= 2000 * 50 = 100000
Hence, the sample size for Simulation A is greater than then the sample size for Simulation B and the variability of Simulation A will be less then the variability of Simulation B.
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The complete question is -
In a recent survey, the proportion of adults who indicated mystery as their favorite type of book was 0.325. Two simulations will be conducted for the sampling distribution of a sample proportion from a population with a true proportion of 0.325. Simulation A will consist of 1,500 trials with a sample size of 100. Simulation B will consist of 2,000 trials with a sample size of 50. Which of the following describes the center and variability of simulation A and simulation B?
A) The centers will roughly be equal, and the variabilities will roughly be equal.
B) The centers will roughly be equal, and the variability of simulation A will be greater than the variability of simulation B.
C) The centers will roughly be equal, and the variability of simulation A will be less than the variability of simulation B.
D) The center of simulation A will be greater than the center of simulation B, and the variability of simulation A will roughly be equal to the variability of simulation B.
E) The center of simulation A will be less than the center of simulation B, and the variability of simulation A will be greater than the variability of simulation B.
Find the slopes of all four sides: J(-4,-1), K(-7,-4), L((2, -10), M(5, -7)
Slopes of all four sides are 1, -2/3, 1 and -2/3.
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
The given points are J(-4,-1), K(-7,-4), L((2, -10), M(5, -7)
For JK, Slope=-4 - (-1)) / (-7 - (-4)) = -3 / -3 = 1
For KL, slope= (-10 - (-4)) / (2 - (-7)) = -6 / 9 = -2/3
For LM, slope= (-7 - (-10)) / (5 - 2) = 3 / 3 = 1
For MJ, Slope=(-1 - (-7)) / (-4 - 5) = 6 / -9 = -2/3
Hence, slopes of all four sides are 1, -2/3, 1 and -2/3.
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NEED HELP NOW DUE ON FRIDAY 25 POINTS
Find the perimeter and area of the figure below
The perimeter and area of the figure are 40.8 units and 110 square units respectively.
How to evaluate for the perimeter and area of the figure.Using the distance formula:
d = √[(x₂ - x₁)² + (y₂ - y₁)²],
where d is the distance between the points (x₁, y₁) and (x₂, y₂).
we shall evaluate the distance between each points as follows:
AB = √[(8-8)² + (9-2)²] = 7
BC = √[(3-8)² + (13-9)²] = 6.4
CD = √[(-3-3)² + (9-13)²] = 7.2
DE = √[(-3+3)² + (9-13)²] = 9
EA = √[(8+3)² + (2-0)²] = 11.2
DB = √[(8+3)² + (9-9)²] = 11
perimeter of the figure = AB + BC + CD + DE + EA.
perimeter of the figure = 7 + 6.4 + 7.2 + 9 + 11.2
perimeter of the figure = 40.8 units.
The figure is observed to be a trapezium ABDE and a triangle BCD. Triangle BCD have base length DB = 11 with height from C to DB equal to 4.
Trapezium ABDE have sides AB and DE parallel to each other, and height DB = 11.
area of triangle BCD = 1/2 × 11 × 4 = 22 square units
area of trapezium ABDE = 1/2 × (7 + 9) × 11 = 88 square units
total area of the figure ABCDE = 22 + 88
total area of the figure ABCDE = 110 square units
Therefore, the perimeter and area of the figure are 40.8 units and 54 square units respectively.
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can someone help me with 2 and 3 please!!!
2. The angle measures of the triangle are given as follows: 30º, 60 and 90º.
3. The value of x is given as follows:
[tex]x = 5\sqrt{2}[/tex]
What are the trigonometric ratios?The three trigonometric ratios are defined as follows:
Sine of angle = length of opposite side divided by the length of the hypotenuse.Cosine of angle = length of adjacent side divided by the length of the hypotenuse.Tangent of angle = length of opposite side divided by the length of the opposite side.For item 2, we have an angle of 90º, along with two different side lengths, hence the angles cannot be equal.
For item 3, we have that:
[tex]\sin{45^\circ} = \frac{x}{10}[/tex]
Hence:
[tex]\frac{\sqrt{2}}{2} = \frac{x}{10}[/tex]
[tex]2x = 10\sqrt{2}[/tex]
[tex]x = 5\sqrt{2}[/tex]
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EX I: Calculate the sector area below.
The sector area for the figure below is 268.19.
What is area of a sector?The quantity of space included within the sector's perimeter is referred to as the sector's area in a circle. A sector always starts at the circle's center. The area of a circle encompassed between its two radii and the arc next to them is known as the sector of a circle. The sector of a circle that most often symbolizes half of a circle is a semicircle.
The area of sector is given by the formula:
A = (pi)r² × α/360
where, r is the radius and α is the angle of the sector.
Substituting the value of r and α in the formula we have:
A = pi (16)² × 120/ 360
A = 268.19
Hence, the sector area for the figure below is 268.19.
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