100 points whoever gets it right

Answer: D. 121.5

Step-by-step explanation: Use the formula [tex]\frac{4}{3}[/tex]×[tex]r^{3}[/tex], (where r is the radius, as in this case the diameter is 9 so divide that by 2 and you get the radius) and the "unit" is π. Search math w ay on the internet for any further math questions. :)

The amount in the account after 18 years will be about $24,459.2.

Compound interest is defined as the amount of interest which has been calculated on the principal amount as well as the amount accumulated over the previous period is also included.

Final amount in a compound interest can be calculated as,

A = P (1 + [tex]\frac{r}{n}[/tex] ) ^ (n t)

Here, A is the final amount, P is the principal amount, n is the number times interest is compounded in a year, r is the rate of interest and t is the time in years.

Here, P = $10,000

r = 5% = 0.05

n = 4, since the compounding is quarterly

t = 18 years

Substituting,

A = 10,000 (1 + [tex]\frac{0.05}{4}[/tex])^ (4 × 18)

  = 10,000 (1.0125)⁷²

  = 24,459.2

Hence there will be an amount of $24,459.2 in the account after 18 years.

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There were 34 mosquitoes on 2 June, the date when the mosquito population is 46000 is 22985 days into June and  the mosquito population on 30 June was 59.

Two or more expressions with an Equal sign is called as Equation.

For 0 ≤ t ≤ 10:

N = 2t + 30 for 0 ≤ t ≤ 10.

The table of values are:

t   0    1    2   3   4   5    

N 30 32 34 36 38 40

The graph will be a line with a positive slope, increasing from N = 30 when t = 0 to N = 50 when t = 10.

The number of mosquitoes on 2 June can be found by using t = 2 in the formula.

N = 2(2) + 30 = 34.

So there were 34 mosquitoes on 2 June.

(ii) To find the date when the mosquito population is 46 000, we can use the formula and solve for t.

N = 2t + 30

46000= 2t + 30

Subtract 30 on both sides

2t =  45970

t=22985

So the date when the mosquito population is 46000 is 22985 days into June.

iii) To find the mosquito population at the end of June, we need to find the population on 10 June and then increase it by 18%.

The population on 10 June can be found by using t = 10 in the formula:

N = 2(10) + 30 = 50

The graph will be a line with a positive slope, increasing from N = 30 when t = 0 to N = 50 when t = 10.

N = 50 (1 + 0.18)

N=59

So the mosquito population on 30 June was 59.

Hence,  there were 34 mosquitoes on 2 June, the date when the mosquito population is 46000 is 22985 days into June and  the mosquito population on 30 June was 59.

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1. Yes 2. no 3. no 4. yes

1. -.5g + 2.5

2. .5g - 2.5

3. -.5g - 2.5

4. -.5g + 2.5

Solution of the given equation is r = 2

Equations are mathematical statements that shows equality, containing two algebraic expressions on both sides of an 'equal to (=)' sign.

Given equation,

8π = 1/3πr²×6

⇒ 2r² = 8

⇒ r² = 8/2

⇒ r = √4

⇒ r = 2

Hence, r = 2 is solution for the given equation.

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The Speed at which Nick paddles is 13.60 miles per hour.

Speed is the rate at which an object's position changes, measured in meters per second. For example, if an object starts at the origin, and then moves three meters in three seconds, its speed is one meter per second. The equation for speed is simple: distance divided by time

Given here: Nick's speed= S and the current is flowing at a rate of 5 miles per hour.

Now it is given that the it takes 30 minutes longer to row upstream than down stream.

Thus we can construct the equation

8/S-5 -8/S+5 = 30 minutes or 1/2 hour

Where 8 is the distance

Thus solving for S we get

8S+40-8S+40 / S²-25 =1/2

80×2=S²-25

160=S²-25

S²=185

S=13.60 miles per hour

Hence, The Speed at which Nick paddles is 13.60 miles per hour.

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The range of the given function would be -

Range → {-2, 3, 5, 6}

An function in mathematics defines a relationship between one variable (the independent variable {x})  and another variable (the dependent variable {y}). Example → y = f{x} = ax + b.

Given is the graph of the function as shown in the image.

Range represents the set of values along the {y} - axis. So, we can write the range as -

Range → {-2, 3, 5, 6}

Therefore, the range of the given function would be -

Range → {-2, 3, 5, 6}.

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At present, Tyrone is 48 years old and his daughter is 24 years old.

Let's start by using variables to represent the ages of Tyrone and his daughter.

Let T be Tyrone's current age and D be his daughter's current age.

We know that Tyrone is twice as old as his daughter, so we can write:

T = 2D

We also know that in 6 years, Tyrone's age will be three times what his daughter's age was six years ago. Six years ago, Tyrone's age was T - 6 and his daughter's age was D - 6. So we can write:

T + 6 = 3(D - 6)

Now we have two equations with two variables, so we can solve for T and D.

First, substitute T = 2D from the first equation into the second equation:

2D + 6 = 3(D - 6)

Simplifying this equation, we get:

2D + 6 = 3D - 18

Add 18 to both sides:

2D + 24 = 3D

Subtract 2D from both sides:

24 = D

So Tyrone's daughter is 24 years old now.

We can use the first equation to find Tyrone's age:

T = 2D = 2(24) = 48

Therefore, Tyrone is 48 years old now.

So at present, Tyrone is 48 years old and his daughter is 24 years old.

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Tyrone is twice as old as his daughter. in 6 years Tyrone's age will be three times what his daughters age was six years ago. how old will they be at present?

(a) opp(A) = 17

(b) adj(A) = 8

(c) The hypotenuse can be found using the Pythagorean theorem: c^2 = a^2 + b^2.

c^2 = 8^2 + 17^2 = 64 + 289 = 353

c = √353 = 19

(d) cos(A) can be found using the formula: cos(A) = adj(A) / hypotenuse = 8 / 19 = 4 / 9

(e) tan(A) can be found using the formula: tan(A) = opp(A) / adj(A) = 17 / 8 = 9 / 4

Trigonometry is a branch of mathematics that deals with the study of triangles and their properties. It is primarily concerned with the relationships between the angles and sides of a triangle, and how these relationships can be used to solve problems. The key concepts of trigonometry include angles, degrees, radians, sine, cosine, tangent, cotangent, secant, and cosecant.

In trigonometry, the sine, cosine, and tangent functions are defined for any angle and can be used to calculate various quantities in a triangle, such as the length of a side or the size of an angle. Trigonometry has numerous applications in fields such as astronomy, physics, engineering, and computer graphics.

One of the most important uses of trigonometry is in navigation and surveying, where it is used to calculate distances, angles, and other quantities in order to determine the position of objects and landmarks. Additionally, trigonometry is used to analyze wave patterns in areas such as sound and light waves, as well as in the design of systems that require precise calculations such as radio and radar systems.

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To find the average, one adds up all the scores and then divides by the total number of scores.

Joan had to find the average of the scores of her friends. To find the average, one adds up all the scores and then divides by the total number of scores. In this case, Joan had to find the sum of 10 different scores of her friends and then divide by 10. This will give her the average of the scores of her friends, which is a single value representing the central tendency of the scores. The average is a commonly used statistical measure that provides an overall idea of the data. In this case, the average of the scores of Joan's friends will give her an idea of the overall performance of her friends in the test she is preparing for.

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The given example of a high school student regarding video game playing is quantitative data collection.

Quantitative data can be measured or counted. The high school student in this example is compiling numerical information about how much time each member of their homeroom class spends playing video games.

The student can first add up the total number of hours each person spends playing video games each week in order to determine the average number of hours spent playing video games each week.

The student can then divide the total number of hours spent playing video games by the number of students in their homeroom class to determine the weekly average.

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Answer:

None of these since it is not a polynomial expression

The sample of 100 students is a simple random sample (SRS) of the population of all students, and it provides evidence about the proportion of students who completed their assigned homework last week.

The sample proportion of students who completed their assigned homework is calculated as the number of students in the sample who completed their homework divided by the total number of students in the sample.

If the sample proportion is less than 60%, then this is evidence that less than 60% of all students completed their assigned homework last week. However, it is important to keep in mind that the sample proportion is just an estimate of the population proportion, and it may not be exactly equal to the population proportion. The sample proportion can vary from sample to sample due to random sampling error.

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Answer:

[tex]y=\dfrac{1}{2}x + 1[/tex]

Step-by-step explanation:

In this question, we are asked for an equation for the graphed line, given the following information about it:

-its slope (rate of change) is 1/2

-its y-intercept (initial value) is 1

We can plug these values into the slope-intercept form equation:

[tex]y=mx+b[/tex]

where [tex]m[/tex] is the line's slope, and b is its y-intercept.

Hence,

[tex]y=\dfrac{1}{2}x + 1[/tex]

The measure of the angles numbered 1 and 2 in the figure of the kite are;

m∠1 = 90°

m∠2  = 72°

A kite is a quadrilateral that has consecutive congruent sides and perpendicular diagonals. A kite has a reflection symmetry across one of the diagonals.

The specified quadrilateral in the figure has a reflection symmetry about the horizontal diagonal,  the figure is therefore a kite

The diagonals of a kite are perpendicular, therefore, the measure of the angle ∠1, by the definition of perpendicular lines, is 90°

m∠1 = 90°

The base angles in the 90° clockwise rotated isosceles triangle are the same
The angle on the other side of the horizontal diagonal at the right vertex is also 18°

The measure of the angle ∠2 is therefore;

m∠2 = (180° - 2 × 18°)/2 = 72°

m∠2 = 72°

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By critically observing the triangular prism shown in the image attached above, the base shape of this triangular prism is a:

C) triangle.

A triangular prism can be defined as a geometric shape (figure) with five (5) faces in total. Generally, a triangular prism comprises two (2) triangular bases and three (3) rectangular lateral faces.

Now, By critically observing the triangular prism, we can logically deduce that the base shape of this prism is a triangle.

Hence, A triangular prism has five faces in total.

There are two triangular bases and three rectangular lateral faces. Few examples of triangular prism are - a camping tent, Toblerone chocolate shape. The base of a prism is also a face.

In conclusion, the base shape of this triangular prism is a triangle.

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Answer:

Step-by-step explanation:The given equations are :

y=-x+2  ....(1)

y = -4x +7 ....(2)

From equation (1) and (2)

-x+2 = -4x +7

Taking like terms together

-x+4x=7-2

3x = 5

x = 1.667

Put the value of x in equation (1)

y=-(1.667)+2

y = 0.333

The solution of the equations are (1.667,0.333). The attached figure shows the graph for the equations.

Step-by-step explanation: The given equations are : y=-x+2 ....(1) y - 1

Let's call the two-digit number "x" and its two digits "a" and "b".

We know that:

x = 5 * (a + b)

We also know that the reverse of x is 9 times greater than x:

x + 9 * x = 100 * a + 10 * b

Expanding x using the first equation:

10 * x = 5 * (a + b) + 9 * 5 * (a + b) = 100 * a + 10 * b

Combining like terms:

10 * x = 100 * a + 10 * b

Solving for x:

x = 10 * a + b

Since x is a two-digit number, 10 * a + b must be between 10 and 99. The only solution that meets this requirement is a = 5 and b = 6. Therefore, the number is 56.

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The direct variation equation in the form x and y is y = 7.25x

As per the given data, the cost of renting a scooter y varies directly with the number of hours the scooter is rented x.

Suppose it costs $21.75 to rent the scooter for 3 hours.

Here we have to determine a direct variation equation in the form of y.

The renting cost (y) is directly proportional to the hours (x).

y ∝ x

y = kx.....(1)

Here k is known for the proportionality constant

From the given information we can find the value of k.

21.75 = k (3)

k = [tex]$\frac{21.75}{3}[/tex]

k = 7.25

Now we have to substitute the value of k in the equation (1)

We get:

y = 7.25x

Therefore a direct variation equation is y = 7.25x.

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The linear equation shows a proportional relationship is y = 2x.

Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

Both linear equations with one variable and those with two variables exist.

Given the equation to find the linear equation shows a proportional relationship,

A general linear equation can be written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

Particularly, when the y-intercept is equal to zero:

y = a*x

We get a proportional relationship.

so the option for the proportional relationship is

y = 2x

Hence option D is correct.

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The solution of the given expression (0.4k^3)^3 can be simplified as :0.064K^9.

The concept that will be used is simpilification. To simplify simply means to make anything easier. In mathematics, simplifying an equation, fraction, or problem means taking it and making it simpler. Calculations and problem-solving techniques simplify the issue. Be aware of the workflow. You can't just multiply, add, subtract, and so on in a straight line when simplifying math formulas.

The given expression is (0.4k^3)^3

This can be simplify as :

(0.4)^3 *(k^3)^3

This can be further simplified by finding the cubing the terms involved which can be done as :

0.064K^9

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The type of sample is a Simple Random Sample.

Hence, option (C) is correct choice.

Simple random sampling is a form of probability sampling in which a selection of participants is chosen at random from a population. Each person in the population has an equal probability of getting chosen.

Using basic random sampling allows researchers to generalise about a certain demographic while eliminating bias. Inferences and predictions about the population can be formed using statistical techniques without having to survey or gather data from every individual in that population.

A Simple Random Sample is a sort of random sample in which every member of the population has an equal probability of being chosen. In this situation, every one of the 40 students has an equal chance of being chosen, making this a simple random sample.

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The correlation coefficient with the correct association is listed as:

-0.86  = 1

-0.66 = 1

-0.01 = 2

0.52 = 3

0.93 = 1

Correlation is a statistical measure that describes the extent to which two variables are linearly related to each other.

A negative correlation is when two variables move opposite each other i.e. when one variable increases, the other decreases

For  absolute values of the correlation coefficient:

0-0.19 => very weak

0.2-0.39 => weak

0.40-0.59 => moderate

0.6-0.79 => strong

0.8-1 => very strong

Thus, the matching is listed below:

-0.86  = strong

-0.66 = strong

-0.01 = weak

0.52 = moderate

0.93 = strong

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The variable "Points scored in a football game" , is a numerical variable, specifically a discrete variable.

The Discrete Numerical Variables represent counts or whole numbers, such as the number of students in a class or the number of items sold in a store.

The Continuous Numerical Variables represent measurements, such as height, weight, or time, and can take on any value within a range.

In this case, the variable represents the number of points scored in a game, and it can only take on specific integer values (for example, 0, 1, 2, etc.) and cannot take on fractional or decimal values.

The given question is incomplete , the complete question is

State whether the Variable is Categorical or Numerical ?

If the variable is numerical, then specify whether the variable is discrete or continuous.

(a) Points scored in a football game .

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A) (i) (1, 5) is possible solution of equation.

(ii) (-2, 0) is not possible solution of equation.

B)  Solution of graph 1);

⇒ (- 2, - 2)

And, Solution of graph 2);

⇒ (4, 1)

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

A) Substitute the given coordinate in system of equation and check it is solution or not as;

1) System of equation are,

⇒ - 5m + 6n = 25

⇒ - 7m + 8n = 33

Coordinate = (1, 5) = (m, n)

Substitute in equations;

⇒ - 5m + 6n = 25

⇒ - 5 (1) + 6(5) = 25

⇒ - 5 + 30 = 25

⇒ 25 = 25

⇒ - 7m + 8n = 33

⇒ - 7(1) + 8(5) = 33

⇒ - 7 + 40 = 33

⇒ 33 = 33

Thus, (1, 5) is possible solution of equation.

2) System of equation are,

⇒ 8x - 3y = - 16

⇒ - 9x - 2y = 50

Coordinate = (- 2, 0) = (x, y)

Substitute in equations;

⇒ 8x - 3y = - 16

⇒ 8(-2) - 3(0) = - 16

⇒ - 16 = - 16

⇒ - 9x - 2y = 50

⇒ - 9(-2) - 2(0) = 50

⇒ 18 ≠ 50

Thus, (-2, 0) is not possible solution of equation.

B) The solution of graph of lines are intersection point of both lines.

Hence, Solution of graph 1);

⇒ (- 2, - 2)

And, Solution of graph 2);

⇒ (4, 1)

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The total interest charger after 20 years for the balloon mortgage would be = $170,500

Simple interest is defined as the extra amount of money that is being paid to an individual following an amount of money that was invested for a stated period of time.

The formula for simple interest= P×T×R/100

The principal amount for the mortgage = 275,000

The time for the mortgage = 20 years

The rate = 3.1%

Therefore interest generated;

= 275,000×3.1×20/100

= 17050000/100

= $170,500

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Answer:

10

Step-by-step explanation:

85+15 is 100

the square root of 100 is 10

Answer

Tha answer is 10 type xhii

Step-by-step explanation:

hope this helps and hope you pass

have a great day/night

Answer:

it is b y=7 done okays hope you like it

Answer:
B, y = 7.

Step-by-step explanation:
If 6y = 42, then all we have to do is divide both sides by 6.

Therefore,
y = 42/6
y = 7.