MATHEMATICS MIDDLE SCHOOL

How can you simplify
-4/7 + (-4/3)​

Answers

Answer 1
Answer: Start by finding a common denominator.
In this case, it would be 21.
So, -12/21 + -28/21= -40/21

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Whats the value of this expression ?
30+[(6÷3)+(3+4)]

Answers

To do this do the work in the brackets first. There are two parentheses.  First solve 6/3.  This gives you two.  Now you add it to 7 (3+4) to get 9.  Now you want to add 30 by 9.  The answer is 39.
Solve the ones inside the parenthesis.
6÷3 = 2
4+3=7  add 7 and 2 which is 9
now since everything inside the brackets and parenthesis is solved add the 30 to 9
 30+9 = 39

Simplify the ratio 24/56

Answers

How to solve:
Step 1 :  Note down the given ratio from the questions.

Step 2 :  Find the greatest common factor, and divide the numerator and denominator by that value.
Answer: 3:7

PLEASEEE HELP Me asap its really confusing

Answers

You can find the inverse of an equation by swapping the x and y, then solving for y.

f(x) = 4x - 12   f(x) is the equivalent of y in this case, so change it to a y

y = 4x - 12   Swap the x and y variables

x = 4y - 12

Solve for y

x = 4y - 12   Add 12 to both sides

x + 12 = 4y   Divide both sides by 4

(x)/(4) + 3 = y   Switch the sides to make it easier to read

y = (x)/(4) + 3   Change y back into f(x) to match what you were given

f(x) = (x)/(4) + 3
What they’re looking for is the inverse function. Imagine the f(x) is a y and switch the x and y to get x=4y-12. Try to isolate y again so add 12 to both sides to get x+12=4y. Divide both sides to get 1/4x+3, your final answer

here is a square pizza with an area of 36 square inches what length of stuffed crust will be around the edge

Answers

so you know to get the area yo do length times width. so we know l*w=36 
so you also know a square has equal sides all around so. the length and the width have to be able =36. so lets get the multiplies of 36: (1,36)(2,16)(3,12)(4,9)(6,6) so looking at these you automatically should know (6,6) is the answer so the length is 6. hope this helps

Please help I need it by tomorrow.

Answers

1.) -7
2.)-7
3.)-2
4.)0
5.)9
6.)-3
7.)11
8.)1
9.)0
10.)11
11.)-12
12.)-20
13.)undefined
14.)3
Ok here's what you do go to the back of the book and it has selected answers in the back

What is 155.43 rounded to the nearest whole number ?

Answers

155;
rounding to the nearest whole number basically means rounding the decimals so they disappear e.g. 11.5 would round up to 12 because 5+ rounds upwards and below 4 rounds down so say it was 15.34 it would round down so it would be 15.
I hope this helps ;)
The correct answer is 155 because 3 in the hundredths place doesn't round up the 4 so therefore the correct answer is be 155. 
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