MATHEMATICS MIDDLE SCHOOL

How do I solve this ?

Answers

Answer 1

Answer:

Answer:

J 36

Step-by-step explanation:

AB = 9, BC = 12, and m∠B = 90°. Since this is a right triangle, we can use Pythagorean theorem to find AC.

c² = a² + b²

c² = 9² + 12²

c = 15

So the perimeter is:

P = 9 + 12 + 15

P = 36

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What's 30x-9=900????????

Answers

Answer:

30.3

Step-by-step explanation:

909/30 = 30.3

x = 30.3

Answer: 300.3

Step-by-step explanation

30x-9=9000

30x=9009

x= 300.3

WHAT IS THIS SOLUTION OF THE EQUATION? x + 8.63=11.001

Answers

subtract 8.63 from both sides since subtraction is the opposite of addition.

x= 11.001 - 8.63.
x= 2.371

you subtract 8.63 from 11.001 and that equals 2.371. so that is your answer.

Simplify negative 5 and 1 over 4 − negative 7 and 1 over 2. Which of the following is correct?2 and 1 over 4
12 and 3 over 4
negative 2 and 1 over 4
negative 12 and 3 over 4

Answers

negative 12 and 3 over 4

What is three fourths and one halves

Answers

3/4 + 1/2
LCD=4
3/4 + 2/4
5/4 = 1 and 1/4
or 1.25 if decimal is required.

5/4 or 1 and 1/4. You have to change 1/2 to fourths and then add.

in a laboratory, solution A will be mixed with solution B in a ratio of 3 to 2. what amount of solution A is needed to mix with 750 ML of solution B

Answers

1,125 ML of solution A will be mixed

If s=7 cm and t= 24 cm, what is the length of r?

Answers

A^2 + B^2 = C^2.

so 49 + 576 = C^2

625 = C^2

Now find the square root of 625.

25 = C (in your case r)

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Andrew has a grid in the shape of an isosceles trapezoid. He has right triangles. Each right triangle has an area of 45 square millimeters and each right triangle fits on the grid. If the length of the bases of the grid are 30 centimeters and 15 centimeters and the height is 16 centimeters, how many right triangles can Andrew fit on the grid?

(19b-1)-9 (2b+4)=-7plz show work step by step (i give thank yous)