MATHEMATICS MIDDLE SCHOOL

The sum of 3 sixteens and 2 nines

Answers

Answer 1

Answer:

three sixteenths = 3/16

two ninths = 2/9

3/16 + 2/9

(9/9)(3/16) + (16/16)(2/9)

27/144 + 32/144

59/144

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Which expression is equivalent to 64 − 9x2?(32)2 − (3x)2
(32)2 + (−3x)2
(8)2 − (3x)2
(8)2 + (−3x)2

Answers

Answer: Third option.

Step-by-step explanation:

By definition, the number 64 and the number 9 are perfect squares.

A perfect square it that number obtained by squaring a whole number.

In this case, 64 is obtained by squaring the number 8 and the number 9 is obtained by the squaring the number 3. Then:

$8^2=64\n3^2=9$

Therefore, you can rewrite the expression $64-9x^2$ as following:

$(8)^2-(3x)^2$

This matches with the third option.

ANSWER

$64 - 9 {x}^(2) = {8}^(2) -( {3x)}^(2)$

EXPLANATION
The given expression is

$64 - 9 {x}^(2)$

Rewrite to get:

${8}^(2) - {3}^(2) {x}^(2)$

Recall that

${a}^(n) {b}^(n) = {(ab)}^(n)$
We apply this property of exponents to the second term.

This gives us

$64 - 9 {x}^(2) = {8}^(2) -( {3x)}^(2)$

The third choice is correct.

4 Melvin plans to attend a comic bookconvention in March. The expenses, including
entry fee, hotel, food, and lodging, will be a
minimum of $550. Melvin currently has $295
saved. He earns $8.50 per hour at his job
as a technician. How many hours will Melvin
need to work in order to have enough money
to attend the convention?
x 30
(G x 30
CH X S 30
x 30

Answers

The answer would be F) because the question says that the total cost will be a minimum of $550. So the hours he works will have to be equal to or more than 550, just in case.
Hope I helped :))

Which statements are true? Check all that apply.

Answers

Bruh I’m doing the same on edg I wanna know someone pls say the answer

Can you think of 7 ways to make 7 using arithmetic?

Answers

1. 1+6
2. 3+4
3. 8-1
4. 14-7
5. 11-4
6. 14 divided by 2
7. 7+0

What is the constant of variation for the following: 5y=10x?

Answers

y and x are the two varibles so 5 and 10 are your contants

Your model locomotive is 18 inches long. It is an exact model of a locomotive that is 72 feet long. A window on the locomotive is how many times wider than a window on the model?

Answers

Your model locomotive (x) = 18 inches
72 feet (y)= 72*12 inches
= 864 inches

Ratio = x:y
= 18:864
= 18/864
= 1/48
= 1:48

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What is the value of 4a3 – 2b2 + 5 when a = 3 and b = −2

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