MATHEMATICS MIDDLE SCHOOL

Evaluate the expression when =x−7 and =y2 .
−x6y

Answers

Answer 1
Answer:

Answer:

-84

Step-by-step explanation:

X=-7, Y=2

Using the giving values that they give you substitute the the X and Y for -7 and 2.

So, your setup should look like -7(6)(2) or -7x6x2

The answer is -84
Answer 2
Answer: itll be -84. Explanation: -7•6•2= -84

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Do 0.3 and 3.0 have the same value ? explain

Answers

No, silly.
3.0 is ten times the size of 0.3 .

Take your calculator, and divide one of them by the other one.
If they have the same value, then the answer will be ' 1 '.

Take your calculator and subtract one from the other.
If they have the same value, then the answer will be zero.
No because .3 is 30 cent and 3.0 is 3 dollars.

Amy has 72 sweets in a bag. She keeps 1/4 of them for herself and shares the rest with her friends. How many sweets will she give to her friends?

Answers

*She keeps 18 sweets and gives **54 sweets to her friends.

*To get 18 i did 72 divided by 4 which equaled 18.
**To get 54 i did 72 - 18 which equaled 54.

Hope I helped you! :)
She would give 54 to her friends and keep 18 for herself

Expand 2x (5x-2) please help i’m confused

Answers

10x^2-4x is your answer! :)

The length of a rectangle is 2/5 meter. Its width is 1/4 of its length. What is the perimeter of the rectangle?

Answers

P= 2(2/5 + 1/4)
2/5 + 1/4 = 8+5/20 = 13/20
P= 2 x 13/20 = 13/10
2(2/5) + 2(2/5 x 1/4)
0.8 + 0.2
= 1

It has a perimeter of 1 metre.

Complete the statement. –5 + __ = –5

Answers

The answer is 0
_____________________________________________________________
-5+0=-5 if you added any number (positive or negative) the answer couldn't be 5 anymore

Find m
(-3x + 20)
(-2x + 55)

Answers

Answer: Solution for (-3x+20)+(-2x+55)=180 equation: x= -21

Step-by-step explanation:

Simplifying

(-3x + 20) + (-2x + 55) = 180

Reorder the terms:

(20 + -3x) + (-2x + 55) = 180

Remove parenthesis around (20 + -3x)

20 + -3x + (-2x + 55) = 180

Reorder the terms:

20 + -3x + (55 + -2x) = 180

Remove parenthesis around (55 + -2x)

20 + -3x + 55 + -2x = 180

Reorder the terms:

20 + 55 + -3x + -2x = 180

Combine like terms: 20 + 55 = 75

75 + -3x + -2x = 180

Combine like terms: -3x + -2x = -5x

75 + -5x = 180

Solving

75 + -5x = 180

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-75' to each side of the equation.

75 + -75 + -5x = 180 + -75

Combine like terms: 75 + -75 = 0

0 + -5x = 180 + -75

-5x = 180 + -75

Combine like terms: 180 + -75 = 105

-5x = 105

Divide each side by '-5'.

x = -21

Simplifying

x = -21
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