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4 years ago

What is the value of 8(x-3.7) if x=4.9?

1 answer:

7 0

Take 8 times 4.9 and 8 times 3.7, 8 times 4.9 is 39.2 and 8 times 3.7 is 29.6 now all you have to do is subtract them numbers from each other and it gives you the answer of 9.6

Answer: 9.6

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Please help ASAP I'll mark Brainliest

IrinaK [193]

I got C but not sure if that is right

6 0

2 years ago

Which expression is equivalent to 64y^18-1000z^6?

Shalnov [3]

For this case we must find an expression equivalent to: $64y ^ {18}-1000z ^ 6$

Then, we take common factor 8:

$8 (64y ^ {18}-125z ^ 6) =$

By definition of power properties we have to:

$(a ^ n) ^ m = a ^ {n * m}$

So:

$8 ((2y ^ 6) ^ 3- (5z ^ 2) ^ 3)$

Since both terms are perfect cubes, we factor using the cube difference formula:

$(a ^ 3-b ^ 3) = (a-b) (a ^ 2 + 2ab + b ^ 2)$

Where:

$a = 2y ^ 6\\b = 5z ^ 2$

So: $8 (2y ^ 6-5z ^ 2) ((2y ^ 6) ^ 2 + 2 (2y ^ 6) (5z ^ 2) + (5z ^ 2) ^ 2) =\\8 (2y ^ 6-5z ^ 2) (4y ^ {12} + 10y ^ 6z ^ 2 + 25z ^ 4)$

Answer:

$8 (2y ^ 6-5z ^ 2) (4y ^ {12} + 10y ^ 6z ^ 2 + 25z ^ 4)$

8 0

3 years ago

At a concession stand, five hot dog(s) and four hamburger(s) cost $15.25, four hot dog(s) and five hamburger(s) cost $16.25. Fin

ANTONII [103]

Answer:

0.45

3.25

Step-by-step explanation:

16.25 ÷ 5 = 3.25

15.25 - 3.25 × 4 = 2.25

2.25 ÷ 5 = 0.45

Check Answer:

3.25 × 5 = 16.25

0.45 × 4 = 2.25

3.25 - 2.25 = 1

16.25 - 1 = 15.25

~lenvy~

3 0

3 years ago

Basic factoring. Please help!

irakobra [83]

Answer:

-1(3 - y)

Step-by-step explanation:

If you factor out a negative 1, you will get the opposite signs you already have, so -1(3 - y). To check, we can simply distribute again:

-3 + y

So our answer is 2nd Choice.

3 0

3 years ago

Find the area and perimeter

andrew-mc [135]

The perimeter is 24 but I’m not sure about the area

8 0

2 years ago