Answer: 35 is 70% of 50
Step-by-step explanation:
Steps to solve "35 is 70 percent of what number?"
We have, 70% × x = 35
or,
70
100
× x = 35
Multiplying both sides by 100 and dividing both sides by 70,
we have x = 35 ×
100
70
x = 50
If you are using a calculator, simply enter 35×100÷70, which will give you the answer.
Answer:
50
Step-by-step explanation:
35 + 15 = 50
---------------------------
15 is 30% of 50 There fore 50 is the correct answer
I took this exam, its the 5.08 Ratios and rates practice exam right?
Have an amazing Day and good luck (:
It takes Jenny 16 minutes to walk her dogs 4 blocks. How many minutes does it take her to walk 1 block? Find the unit rate by using what you know about ratios.
Answer:
16/4 = 4
1 block = 4 minutes
4 blocks = 16 minutes
to put this into a ratio it would be 1:4
$1,240 at 8% compounded annually for 2 years.
The compound interest on $1240 at 8% for 2 years is $205.8
What is compound interest?Compound interest is the interest you earn on interest. This can be illustrated by using basic math: if you have $100 and it earns 5% interest each year, you'll have $105 at the end of the first year. At the end of the second year, you'll have $110.25.
The Amount on a compound interest is expressed as: A = P(1+r/100)^t
where P is the principal and r is the rate, t is the time
A = 1240( 1+8/100)²
A = 1240(1+0.08) ²
A = 1240(1.08)²
A = 1240× 1.166
A = $1445.8
A = P+I
I = A-P
I = 1445.8-1240
I = $ 205.8
therefore the interest on the $1240 compounded for 2 years is $205.8
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the regression equation y equals negative 0.414 x plus 106.55 approximates the percent of people in an audience who finish watching a documentary, y, given the length of the film in minutes, x. which percent is the best prediction for the percent of people in an audience who will finish watching a documentary that is 85 minutes long?
According to the regression model, approximately 71.46% of the audience will finish watching a documentary that is 85 minutes long.
Regression is a statistical method used to model the relationship between two variables.
In this case, the regression equation y = -0.414x + 106.55 is used to approximate the percent of people in an audience who finish watching a documentary, y, given the length of the film in minutes, x.
To find the best prediction for the percent of people who will finish watching a documentary that is 85 minutes long, we need to plug in 85 for x in the regression equation:
y = -0.414x + 106.55
y = -0.414(85) + 106.55
y = -35.09 + 106.55
y = 71.46
Therefore, the best prediction for the percent of people who will finish watching a documentary that is 85 minutes long is 71.46%.
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LCD of 11/15 and 9/10
Answer:
LCD = 30
Step-by-step explanation:
11/15 = 11/15 × 2/2 = 22/30
9/10 = 9/10 × 3/3 = 27/30
Finding the Error
A 2-column table with 4 rows. Column 1 is labeled Tons with entries 2, 4, 10, 12. Column 2 is labeled Pounds with entries 4,000, 8,000, 20,000, 40,000. 40,000 is crossed out. An arrow goes from 2 to 12 and a second arrow goes from 4,000 to 40,000.
What error did the student most likely make?
The student multiplied by 6 instead of 10.
The student multiplied by 10 instead of 6.
The student used the ratio of 1:4,000 instead of 2:4,000.
The student used the ratio of 2:2,000 instead of 1:2,000.
Pls help its for a grade and I really need it bc I have a d
Answer:
232 and 58
Step-by-step explanation:
bro just use a calc
Answer:
Part A: C, 129 & Part B: A, 58
Step-by-step explanation:
Part A:
36+ 51 + 42= 129
Part B:
152- 49 - 45= 58
To double check part B:
58 + 49 + 45 = 152
ians car can go 224 miles on 7 gallons of gas. During a drive last weekend, ian used 4 gallons of gas. How far did drive? Use pencil and paper. Explain how the problem changes if you were given the distance drove last weekend instead of how much gas used.
Answer:
see below
Step-by-step explanation:
4/7*224 = 128
224 miles / 7 gallons = 32 miles per gallon
so given either factors, you'll be able to solve the other.
the problem will become how many gallons used to drive xxx miles.
Explain what each point on the least-squares regression line represents.
Choose the correct answer below.
A.Each point on the least-squares regression line represents the y-value of the data set at that corresponding value of x.
B. Each point on the least-squares regression line represents the y-values that would be considered ideal at that corresponding value of x.
C.Each point on the least-squares regression line represents the predicted y-value at the corresponding value of x.
D.Each point on the least-squares regression line represents one of the points in the data set.
(C) The corresponding value of x represents the expected y-value at each location on the least-squares regression line.
What is the least-squares regression line?
A straight line that depicts the relationship between a response variable (y) and an explanatory variable (x) is called a regression line (LSRL, or Least Squares Regression Line).
A mathematical model called the line is used to forecast the value of y given a value for x.
We need an explanatory and a response variable for regression.
The anticipated y-value at each position on the least-squares regression line is represented by the corresponding value of x.
One way to use linear regression is by using least squares. It enables us to identify abnormalities in our data and forecast results based on an existing collection of data.
Values that are either too wonderful or awful to be real or that are unique cases are known as anomalies.
Therefore, (C) the corresponding value of x represents the expected y-value at each location on the least-squares regression line.
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Selfie death article COLLABORATIVE DISCUSSION
Before you began reading this article, what was your opinion of
selfies? Did your opinion change based on the information the
author included? Discuss your thoughts with a partner.
Before reading this article, my opinion of selfies is that they were easy and not very dangerous photographs to capture. When I read the article my perspective changed to be more careful when taking a selfie.
What is a selfie?A selfie is a term that refers to a photograph that is taken autonomously of oneself. Now most devices include a front camera to take photos of yourself, the famous selfies.
My perspective before reading the article was that selfies were ordinary photos like any other. However, after reading the article I see that they have a high risk of accidents, so it is necessary to be careful not to be in a risky situation because of a photo.
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What is (gof)(x) if f(x) = 3x - 1 and g(x) = 4x² + 9?
Step-by-step explanation:
(gof)(x) is basically g(f(x))
= 4 × (3x - 1)² + 9
= 4 × (9x² - 6x + 1) + 9
= 36x² - 24x + 4 + 9
= 36x² - 24x + 13
Any question is fine
The duration it takes a teacher and the duration it takes a student to each paint the mural found using the combined work formula are;
One teacher takes 79[tex]\frac{3}{23}[/tex] hours to paint the muralOne student takes -1820 hours to paint the muralThe number of brushes and tubes of paints purchased are;
40 tubes of paint and 80 paintbrushesWhat is the combined work formula?The time, Tₙ, it takes to do a work by two people combined, where the time it takes one person to do the work is T₁ and the time it takes the second person to do the same work is T₂, can be expressed as in the following combined work or rate of work formula equation;
[tex]\frac{1}{T_1}+\frac{1}{T_2} = \frac{1}{T_n}[/tex]
Let T represent the time it takes one teacher to paint the large mural, and let S represent the time it takes a student to paint the large mural, we get;
[tex]\frac{8}{T}+\frac{2}{S} = \frac{1}{10}[/tex]...(1)
[tex]\frac{6}{T}+\frac{8}{S} = \frac{1}{14}[/tex]...(2)
Multiplying equation (1) by 4 and subtracting equation (2) from the result, we get;
[tex]4\times \frac{8}{T}+\frac{2}{S} = \frac{32}{T}+\frac{8}{S} = \frac{4}{10} = \frac{2}{5}[/tex]
[tex]\frac{32}{T}+\frac{8}{S} = \frac{2}{5}[/tex]
[tex]\frac{32}{T}+\frac{8}{S} -\left(\frac{6}{T}+\frac{8}{S}\right) = \frac{2}{5} - \frac{1}{14} = \frac{23}{70}[/tex]
[tex]\frac{26}{T}+0 = \frac{23}{70}[/tex]
T = (70/23) × 26 = 1820/23 = 79 3/23
The time it will take one teacher to paint the mural is; T = 79 3/23 hours[tex]\frac{8}{T}+\frac{2}{S} = \frac{1}{10}[/tex], therefore;
[tex]\frac{2}{S} = \frac{1}{10} - \frac{8}{T}[/tex]
[tex]\frac{2}{S} = \frac{1}{10} - \frac{8\times 23}{1820} = -\frac{1}{910}[/tex]
S = -910 × 2 = -1820
The time it would take a student to paint the mural is -1820 hoursSecond question
The budget on tubes of paint and paintbrushes = $200
The cost of a tube = $4.00 and the cost of a paintbrush = $0.5
Number of brushes purchased = 2 × The number of tubes of paint purchased
Let x represent the number of paintbrushes purchased and let y represent the number of tubes of paint purchased, we get;
0.5·x + 4·y = 200
x = 2·y
Therefore; 0.5 × (2·y) + 4·y = 200
y + 4·y = 5·y = 200
y = 200/5 = 40
The number of tubes of paint purchased, y = 40
x = 2·y, therefore;
x = 2 × 40 = 80
The number of paintbrushes purchased, x = 80
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in a group of five friends, the sums of the ages of each group of four of them is 58, 59, 61, 62 and 64. what is the age of the oldest of the five friends?
The age of the oldest of the five friends is 19 years and the youngest is 12 years.
The given information is in a group there are five friends, the sums of the ages of each group of four of them are 58, 59, 61, 62 and 64.
The range of a data set is the difference between smaller values and a larger value in the set.
To find the age of the oldest person
Range=oldest age -the youngest age
[tex]oldest=\frac{Range-youngest age}{4}[/tex]
R=(64-58/4)+(64-59/4)+(64-61/4)+64-62/4)
R=1.5+1.241+0.75+0.5
R=3.991.
64/4=16.
O=16+3.991
Oldest=19 years.
Youngest=16-3.9=12 years.
Hence, the age of the oldest of the five friends is 19 years.
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describe different real world situatons include units of x and y that would be consistent with the data provided
A real-world situation consistent with the data provided would be (a) the height of a balloon as it ascends in the air at a constant rate, (b) the speed of a car as it accelerates from a standstill to a constant speed, (c) the height of a soccer ball as it is kicked into the air (d) the velocity of a skydiver as they fall to the ground.
a. A real-world situation consistent with the data provided would be the height of a balloon as it ascends in the air at a constant rate. In this case, x can be the time elapsed in seconds, and y can be the height in meters.
The balloon's height will not change with time (f'(x) = 0), meaning the balloon is not accelerating, and the height remains constant as it moves from 0 to 3 seconds.
b. A real-world situation consistent with the data provided would be the speed of a car as it accelerates from a standstill to a constant speed. In this case, x can be the time elapsed in seconds, and y can be the speed in meters per second.
The speed of the car will increase at a constant rate (f'(x) = 50), meaning the car is accelerating, and the speed increases as it moves from 0 to 3 seconds.
c. A real-world situation consistent with the data provided would be the height of a soccer ball as it is kicked into the air. In this case, x can be the time elapsed in seconds, and y can be the height in meters.
The height of the ball will increase as time goes by (f'(x) is increasing as x increases), meaning the ball is moving upwards, and the height increases as it moves from 0 to 3 seconds.
d. A real-world situation consistent with the data provided would be the velocity of a skydiver as they fall to the ground. In this case, x can be the time elapsed in seconds, and y can be the velocity in meters per second.
The velocity of the skydiver will decrease as time goes by (f'(x) is decreasing as x increases), meaning the skydiver is falling faster and faster, and the velocity decreases as it moves from 0 to 3 seconds.
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--The given question is incomplete; the complete question is
"Describe different real-world situations (include the units of x and y) that would be consistent with the data provided:
a. f'(x)=0, 0 ≤ x ≤ 3
b. f'(x) = 50, 0 ≤ x ≤ 3
C. f'(x) is increasing as x increases, 0 ≤ x ≤ 3
d. f'(x) is decreasing as x increases, 0 ≤ x ≤ 3"--
Which expression is equivalent to x2 + 10x + 24?
Question 4 options:
(x + 8)(x + 3)
(x + 8)(x + 2)
(x + 12)(x - 2)
(x + 6)(x + 4)
Answer: (x+6)(x+4)
Step-by-step explanation: Search math w ay on the internet :)
How can data displays be used to compare populations?
The data displays be used to compare populations as
(i)they quickly illustrate measures of center
(ii)they show trends in data that can be compared.
Data Display is basically displaying of useful data which has been extracted from bundles of raw data or raw data points. That useful data can be used to compare two different datasets as well.
It says that it quickly illustrate measures of centre. True, because it presents you quick display so that everyone seeing the data in form of charts or tables easily catch the information to be conveyed.
It says, they show trends in data that can be compared. Yes again true. Data displays show you trends of different things in one clear picture and it can be compared with other datasets through the use of data displays.
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Find b.
O 35
O 55
O 72.5
O 90
Check the picture below.
so by the "inscribed angle theorem" that means "c" is half of 70°, and by Thales Theorem "a" is a right-angle, btw that can also be derived by the "inscribed angle theorem", that makes angles "b" and "c" complementary angles.
Two Functions are given
f (x) = -x^2 + 3x - 2
g (x) = -x + 1
What is one value for x such that f (x) g (x)
the value of x will be either 1 or 3 for the condition f (x) = g (x).
What are Systems of equations?Simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
Given a system of equations: f (x) = -x^2 + 3x - 2 and g (x) = -x + 1
To find the value of x for the f (x) = g (x)
So,
-x^2 + 3x - 2 = -x + 1
-x² + 4x -3 = 0
multiply by -1 in the equation
x² - 4x +3 = 0
x² - 3x - x +3 = 0
take (x-3 ) common
x(x -3)-1(x- 3) = 0
Thus,
x = 1 or 3
Therefore, the value of x will be either 1 or 3 for the condition f (x) = g (x).
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Find the slope of the line that contains the following points: (17, -12) and (12, 8). Use the slope formula.
PLEASE NEED HELP ASP!
Determine whether each ordered pair is a solution or not a solution to this system of inequalities.
y< −x
2x+y>2
The ordered pair that is the solution of the given system of inequalities is (2, -2)
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given is a system of inequalities, y < -x and 2x+y > 2, we need to determine solution set of the given system of inequalities,
The inequalities are,
y < -x....(i)
2x+y > 2
y < 2-2x...(ii)
To find the ordered pair, put y = -x in equation Eq(ii) and replace < by =
-x = 2 - 2x
x = 2
y = -2
Therefore, the ordered pair, is (2, -2) {look at the graph attached}
Hence, the ordered pair that is the solution of the given system of inequalities is (2, -2)
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Gwen's living room is rectangular and measures 6 meters by 5 meters. Beginning in one corner, Gwen walks the length of her living room and then turns and walks the width. Finally, Gwen walks back to the corner she started in. How far has she walked? If necessary, round to the nearest tenth.
how many meters?
Gwen's walked 18.81 meters in her living room.
What is Pythagoras theorem?
The Pythagoras theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the square of the other two sides.
We have to given that;
Gwen's living room is rectangular and measures 6 meters by 5 meters.
Now, Beginning in one corner, Gwen walks the length of her living room and then turns and walks the width.
Hence, Distance cover by him = 6 + 5
= 11 meters
And, Finally, Gwen walks back to the corner she started in.
Hence, The distance cover to back to the corner she started in is,
⇒ d² = 6² + 5²
⇒ d² = 36 + 25
⇒ d = 61
⇒ d = 7.81 meters
Thus, The total distance cover by her by walking = 7.81 + 11
= 18.81 meters
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a measurable characteristic about an entire population is a. an experiment b. a parameter c. a population d. a sample e. a statistic
A measurable characteristic of an entire population is a parameter.
The population data is the real data for a certain attribute in the context of statistics, whereas the sample data is the representative data picked from the population. Metrics like mean, standard deviation, median, and mode are typically used to measure the characteristics of the sample and population.
Option B is the right response to the provided question.
A parameter is a quantity that affects a mathematical object's output or behavior yet is thought of as being held constant. Variables and parameters have a lot in common, and in some cases, the distinction is really one of perspective.
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please help i eed the answer now thanks and rating will be given please
pls i need help asap. just these 2 questions
Appropriate values of equation with standard form:
2.D. A=4, B=0, C=9
3.B.5x-4y=9
System of Linear EquationsA system of linear equations is one of the algebraic equations. This equation has the characteristic that each term contains a constant, or multiplication of a constant with a single variable.
This equation is said to be linear because this mathematical relationship can be described as a straight line in the Cartesian coordinate system, a system that uniquely assigns each point in a plane a series of numerical coordinates.
This system of linear equations generally has two main properties, namely:
For example l is a linear equation, then:
Adding and subtracting numbers in both sides of equation l, does not change the solution of the equation. Multiplication of non-zero numbers in both sides of equation l does not change the solution of the equation.Learn more equation at
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Dylan and mackenzie are 230 feet apart when they start walking toward one another. mackenzie walks twice as fast as dylan so whenever dylan travels x feet, mackenzie travels 2 x feet. let x represent the number of feet dylan has traveled since he started walking toward mackenzie.
The total distance between Dylan and Mackenzie is reduced by x feet each time Dylan travels x feet, since Mackenzie travels 2x feet during that time. Therefore, their combined distance of travel is x + 2x = 3x feet.
Since their starting distance apart was 230 feet, and their combined distance of travel is 3x feet, we can write an equation to represent the situation:
230 = 3x
To find the distance each person travels, we can solve for x by dividing both sides of the equation by 3:
230 / 3 = 3x / 3
x = 230 / 3 = 76.67 feet
So, Dylan travels x = 76.67 feet and Mackenzie travels 2x = 2 * 76.67 = 153.33 feet.
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Given: AD, BE and FC intersect at point P. AD⊥FC.
Write at least 6 algebra equations to relate different pairs of angles. Justify your statements with the correct definition or theorem.
The six algebraic equations are given below.
What is an angle addition postulate?According to the Angle Addition Postulate, an angle's measure is equal to the sum of the measures of any two adjacent angles. The Angle Addition Postulate can be used to determine the measurement of a missing angle or to determine the angle produced by two or more other angles.
Given:
AD, BE and CF intersect at point P.
And AD⊥CF.
The algebraic equations:
∠APC + ∠CPD = 180° {Supplementary angles}
∠FPA + ∠CPA = 180° {Supplementary angles}
∠EPA + ∠BPA = 180° {Supplementary angles}
∠EPD = ∠BPA {opposite angle theorem}
∠APB + ∠CPB = ∠CPA {Angle addition postulate}
∠EPF + ∠EPD = ∠DPF {Angle addition postulate}
Therefore, 6 equations are given above.
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a jar contains 4 white, 10 blue, and 16 red marbles. if one marble is drawn at random from the jar, find the probability that:
The probability of drawing a white marble is 2/15
How to determine the probability that a white marble is selectedFrom the question, we have the following parameters that can be used in our computation:
4 white, 10 blue, and 16 red marbles
This means that
Total = 4 + 10 + 16
Total = 30
So, the probability of drawing a white marble is
P = White/Total
Substitute the known values in the above equation, so, we have the following representation
P = 4 / 30 = 2/15.
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Complete question
a jar contains 4 white, 10 blue, and 16 red marbles. if one marble is drawn at random from the jar, find the probability that a white marble is selected
Help!! Question in pic
The statement W ⊂ J is true.
What is a set?A set is a collection of items where there are operations such as:
Union of sets, the intersection of sets, and the complement of sets.
We have,
From the given information,
R ⊂ J
D ⊂ J
M ⊂ D ⊂ J
W ⊂ D ⊂ J _____(1)
Now,
⊂ means subset.
Example:
A = {1, 2, 3}
B = {1, 2, 3, 4}
So,
A ⊂ B since the element in A is also in B and B has one extra element.
So,
From (1),
W ⊂ J
Thus,
W is a subset of J.
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there are 1700 bottles of water arranged into 4 groups. the second group has 20 more bottles than the first group. the third group has twice as many bottles as the second group. the fourth group has 10 more bottles than the third group. how many bottles are in each group? solve this problem in two ways: with the aid of a diagram and with algebraic equations. explain both solu-tion methods, and discuss how they are related.
There are 265 bottles in the first group, 285 in the second group, 505 in the third group, and 515 in the fourth group in both the ways.
Solution Method 1: With the aid of a diagram
We can make an outline to monitor the quantity of jugs in each gathering. We should dole out a variable to address the quantity of containers in the principal bunch, x.
Bunch 1: x containers
Bunch 2: x + 20 containers
Bunch 3: 2(x + 20) = 2x + 40 containers
Bunch 4: 2x + 50 containers
The complete number of containers is x + (x + 20) + (2x + 40) + (2x + 50) = 1700
Along these lines, 6x + 110 = 1700
Taking away 110 from the two sides: 6x = 1590
Separating the two sides by 6: x = 265
In this way, there are 265 jugs in the principal bunch, 285 in the subsequent gathering, 505 in the third gathering, and 515 in the fourth gathering.
Solution Method 2: With Algebraic Equations
We can address the quantity of containers in each gathering with factors:
Bunch 1: x containers
Bunch 2: y bottles
Bunch 3: z bottles
Bunch 4: w bottles
Considering that:
y = x + 20
z = 2y = 2(x + 20) = 2x + 40
w = z + 10 = 2x + 50
Also, the all out number of jugs is x + y + z + w = 1700
Subbing the upsides of y, z, and w:
x + (x + 20) + (2x + 40) + (2x + 50) = 1700
Working on the articulation:
6x + 110 = 1700
Taking away 110 from the two sides:
6x = 1590
Separating the two sides by 6:
x = 265
Thus, there are 265 containers in the principal bunch, 285 in the subsequent gathering, 505 in the third gathering, and 515 in the fourth gathering.
Connection between the two techniques:
The two techniques utilize similar conditions to address the quantity of jugs in each gathering, and they show up at a similar arrangement. The thing that matters is that the principal technique presents the arrangement in a diagram, which can be simpler for certain individuals to comprehend, while the subsequent strategy utilizes mathematical conditions, which can be more proficient for taking care of the issue. Notwithstanding, the two strategies depend on similar ideas and standards of polynomial math.
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6. Rewrite each of the following in simplest form by combining like terms and constants (normal
numbers with no variables attached). Rewrite subtraction as addition when necessary.
(a) 5x+7+6x+2
(b) 7y+4-2y + 10
(c) 6c-2-9c-8
(d) 1lx+2y+4x+8y
(g) 15x+2y+7+6y+4x+2
(e) 3m +2n-5m +11n
(f) -2w+4z +7w-9z
(h) 3a +7b-9+8a-3b+4
The following expressions can be written as 12x+9 , 5y + 14 , -3c-10 and 11a+4b-5
What is Algebraic expression ?
An algebraic expression is a mathematical phrase that consists of one or more variables, constants, and mathematical operations, such as addition, subtraction, multiplication, and division. Algebraic expressions can be used to represent a wide range of mathematical situations, such as equations, inequalities, functions, and formulas.
(a) 5x + 7 + 6x + 2 = 11x + 9
(b) 7y + 4 - 2y + 10 = 5y + 14
(c) 6c - 2 - 9c - 8 = -3c - 10 (Rewrote subtraction as addition: 6c - 2 + (-9c) - 8)
(d) 1lx + 2y + 4x + 8y = 5x + 10y (Combined "like terms": lx and x are not the same, so they can't be combined)
(e) 3m + 2n - 5m + 11n = -2m + 13n
(f) -2w + 4z + 7w - 9z = 5w - 5z
(g) 15x + 2y + 7 + 6y + 4x + 2 = 19x + 8y + 9
(h) 3a + 7b - 9 + 8a - 3b + 4 = 11a + 4b - 5
Therefore, The following expressions can be written as 12x+9 , 5y + 14 , -3c-10 and 11a+4b-5
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The ratio of c:d is 1:3. The ratio of d:e is 2:3. What is the ratio of c:d:e?
The ratio of c:d:e is 1:3:2.
How The answer was obtainedTo find the ratio, you can multiply the first ratio by the second ratio: 1 * 2 = 2 and 3 * 3 = 9, so the ratio becomes 2:9:6, which can be simplified to 1:3:2.
A ratio is a comparison between two values. To calculate a ratio, divide the first value by the second value. For example, if you have three apples and seven bananas, the ratio of apples to bananas would be 3/7.
You can also simplify a ratio by dividing both values by their greatest common divisor. For example, if the ratio of apples to bananas is 6/14, you could simplify it to 3/7.
It's also possible to express a ratio as a fraction, decimal, or percentage. To convert a ratio to a fraction, simply divide the two values. To convert a ratio to a decimal, divide the numerator by the denominator. To convert a ratio to a percentage, multiply the ratio by 100.
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