MATHEMATICS MIDDLE SCHOOL

A circle has a radius of 14 feet. What it’s area

Answers

Answer 1
Answer:

Answer:

6.157

Step-by-step explanation:

A=πr^2=π·14^2≈615.75216
Answer 2
Answer: Area= pi multiples by the radius squared which equals 615.44

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Which expressions are equivalent to 2(25)?2(20 + 15) 2(10 + 15) 2(2 + 5) 2(20 + 5)
Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population? (5 points) Yes, it is a valid inference because his classmates make up a random sample of the students in the school Yes, it is a valid inference because he asked all 26 students in his science class No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
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what two fractions name the partof the marbles that are black? F: 2/6 and 1/3 G: 2/4 and 1/2 H: 6/8 and 3/4 J: 2/8 and 1/4

Answers

the part of the black marbles are j 

How does y=mx+c work

Answers

Ok so, y = mx + c is the equation of a line
When a graph is written in this form, m is the slope/gradient and c is the y - intercept.
This form is needed when a question asks for the equation.
Lets say they give 2 sets of coordinates, we can use the point slope formula to find the slope (m)

point slope formula:
(y₂ - y₁) = m(x₂ - x₁)

Then we substitute any of the two set of coordinates to find c, the y - intercept. 

So the line has a gradient of m and y - intercept of c

If y = 2x2 – 4x, what is the value of y when x equals 5. A.10
B.30
C.80
D.480


need the answer asap

Answers

Answer:

B

Step-by-step explanation:

Putting x=5 in the above eq

y=2(5)^2-4(5)

y=2(25)-20

y=50-20

y=30

Answer:i literally have no clue humy

Step-by-step explanation:

this is bull i got to get the f out of here

Use multiplication to find 2 equivalent fraction 3/4

Answers

6 over 8 and or you can do 9 over 12 because you can multiply the numerator and the denominator with any number but what you do to the top has to be the same as the bottom. I multiplied the first one with 2 on the denominator and the numerator. I multiplied the second one with 3 and what you do to the bottom has  to be the same as the top
6/8. 9/12. 12/16. There are many more too!

Choose the number that is a solution of the inequality: a + 9 < 5 A) -2
B) 5
C) 0
D) -5
( i kept getting -4 am i wrong or are the choices wrong?)

Answers

Answer:

d: -5

Step-by-step explanation:

when you plug in all the answer choices -5 is the only true answer

A construction crew has just built a new road. They built the road at a rate of 7 kilometers per week. They built 8.75 kilometers of road. How many weeks did it take them?

Answers

7 kilometers per 1 week equals 8.75 kilometers per x weeks.

7 / 1 = 8.75 / x

7 = 8.75 / x

7x = 8.75

x = 8.75 / 7

x = 1.25

It took 1.25 weeks to build 8.75 kilometers of road.

Final answer:

The construction crew would need approximately 1.25 weeks to build 8.75 kilometers of road. This is calculated by dividing the total distance by the rate of construction.

Explanation:

To find out how many weeks it took the construction crew to build 8.75 kilometers of road, we need to divide the total distance (8.75 km) by the rate at which they built the road (7 km per week). So, the calculation will be 8.75 km ÷ 7 km/week.

This is a simple division problem. Using a calculator, you will find that 8.75 ÷ 7 equals approximately 1.25.

Therefore, the construction crew would need about 1.25 weeks to build 8.75 kilometers of road. Please note, this is an approximation, and actual times may vary.

Learn more about Time Calculation here:

brainly.com/question/34080240

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