MATHEMATICS MIDDLE SCHOOL

Which of the following is equal to |-7|?a. the opposite of 7
b. -|7|
c. -7
d. -(-7)

Answers

Answer 1
Answer: -(-7) because when multiple (-) with (-) the result came out as +
Answer 2
Answer: I think the answer is d

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How do you do scientific notation? what is 1.20 x 10 to the 3rd power

Answers

Move the decimal point _ places to the right by looking at the exponent if 10 so that one is just 12.0
take 1.20 and move your decimal to the right 3 places and you will get your answer

Simplify The following equations(This is algebra, so PLEASE, only answer if you KNOW FOR SURE, thank you)

3a+7b+2c-a-4b

-8a-b-(-6c)-2a-b-5c

b-4c+3a-c-9b-4a

Answers

mostly collect like terms
use associative property which is
(a+b)+c=a+(b+c)
also -a+b-c=(-a)+(b)+(-c) so you can move them around
and remember that:
you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2
youcan only add like terms( like terms are terms that are same name like xor y are differnt, and like terms have same power exg x^2 and x^3 andx^1/2 and such

I will oly put the naswers because I don't have much time

first one: 2a+3b+2c

second one: remember that -(-6c)=+6c so the answer is c-10a-2b

third one: -a-8b-5c

I don’t know how to solve this it’s exponents.

Answers

Answer:

9^6

Step-by-step explanation:

When dividing exponents with the same base, we subtract the exponents

a^b/ a^c = a^(b-c)

9^11/9^5 = 9^(11-5)

              = 9^6

Why does it take 3 copies of 1/6 to show the same amount as 1 copy of 1/2?

Answers

3*1/6= 3/6 for three copies. 1/2 can equal half of any number. 3 is half of 6, so 3/6=1/2. 1/2 d 3/6 are equivalent fractions.

I hope this helped you!

which expression is equivalent to 25 a. (8×4-2) ×3 +8 ÷ 2 b.8 x (4-2) ×3 + 8 ÷ 2 c. 8×4-(2×3+8)÷2 d.8×4- 2 ×3 + 8 ÷2

Answers

Answer:

c. 8×4-(2×3+8)÷2

Step-by-step explanation:

Using the rules of BODMAS,

B stands for  bracket

O stands for Order

D stands  for Division

M stands for Multiplication

A stands for Addition

S stands for Subtraction

8×4-(2×3+8)÷2

Now using this rule we will first of all open the bracket, In the bracket we multiply then add

8 × 4 - (6 +8) ÷ 2

8 × 4 - 14 ÷ 2

Still applying the rule, we divide 14 by 2 to give us 7

8 × 4  - 7

Then, still applying the rule, we multiply 8 by 4 which will give us 32

32 - 7

Then we finally subtract 7 from 32 to give us 25

32 - 7 = 25

So the expression;  8×4-(2×3+8)÷2    is equivalent to 25
The answer is C.

Proof:
8×4-(2×3+8)÷2
=32-(6+8)÷2
=32-14÷2
=32-7
=25

Ali was paid $75 for mowing a neighbor's yard.This is one fourth of the amount of money she earned all summer.How much did Ali earn all summer?Write and solve an equation.

Answers

It should be 300. You would have to multiply 75 by 4 If it's just 1/4
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ILL GIVE BRAINIEST ON WHOEVER GETS IT RIGHT