MATHEMATICS HIGH SCHOOL

Given f(x) = –3x – 7, what is f(–4)?A.
40


B.
5


C.
–1


D.
–14

Answers

Answer 1
Answer: Hello,

answer B

f(-4)=-3*(-4)-7=12-7=5

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If an object is dropped from a height of 85 feet, the function h(t)=-16t^2+85 gives the height of the object after t seconds. Approximately, when will the object hit the ground?a. 85.00 seconds
b. 69.00 seconds
c. 0.33 seconds

Answers

c because all you need to do is compare the 2 variables and then add the variables and the multiply it and then divide it. Then your golden.

Kathie was buying materials for a quilt. She bought 4.5 yards of padding, 7.5 yards of cotton, and 4.95 yards of red trim. She also bought some black trim and some white trim. She bought 4 times as much black trim as she did red trim and 3 times as much white trim as red trim. How many yards of trim did Kathie buy for her quilt?

A.
the amount of black trim purchased

B.
the total amount of padding, cotton, and trim that Kathie bought

C.
the difference between the amount of padding and the amount of cotton that Kathie bought

Answers

i think that the answer would be C.

hope i helped

The movie started at 6:32 p.m. and ended at 9:48 p.m. How long did the movie last?

Answers

first, add hours until the difference is less than an hour. You can add 3 hours on to make it 9:32 p.m. Then, add minutes on until it's the exact time. from 9:32 to 9:48, you can add 16 minutes, so the total time in the movie was 3 hours, 16 minutes.

I need help right away with the next problem.

Answers

Answer:

  see below

Step-by-step explanation:

To convert the numbers to percentages, divide each number by the table total (80) and multiply by 100%. That is equivalent to multiplying each number by 1.25%. For example, 18·1.25% = 22.5% (middle table number).

I need help plsssd it’s algebra

Answers

I would say B

Hope I helped :)

A square has a perimeter of 100cm What is the length of each side?

Answers

Answer:

each side of the square is 25cm

Step-by-step explanation:

this is because of two things:

1. a square has equal sides

2. the perimeter is all the sides added together.

so if you call the length of one side x, you can make this equation:

x + x + x + x = 100

combine like terms

4x = 100

divide both sides by 4

x = 100/4

x = 25

Answer:

25 cm

I hope this helps!
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