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Stolb23 [73]
3 years ago
8

Which of the following is a sum of cubes?

Mathematics
1 answer:
Vika [28.1K]3 years ago
8 0

Answer:

C. X^3 +8y^6

Step-by-step explanation:

X³ +8y⁶ = (X + 2 y²) (X² - 2 X y² + 4 y⁴)

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The formula for the surface area of a cylinder is A=2πr(r+h).Find h if A=80π and r=5.
lesya [120]
A=2<span>πr(r+h)
</span>80π=<span>2π(5)(5+h)
</span>80π=10π(5+h)
80π=50π + 10πh
30π=10πh
3=h
3 0
3 years ago
-3 + (-5) would it be negative seven
alina1380 [7]
You do add the two negatives and get a negative answer but -3 + -5 = -8
6 0
3 years ago
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A fruit company delivers its fruit in two types of boxes: large and small. a delivery of 5 large boxes and 3 small boxes has a t
Hoochie [10]
Let's let the weight of a large box be L, and the weight of a small box be S.

We know that 5 large boxes and 3 small boxes is 120kg, so:
5L + 3S = 120

We also know that 7 large boxes and 9 small boxes is 234kg, so:
7L + 9S = 234

You can multiply the first equation by 3 to get:
15L + 9S = 360

See how now both equations have 9S? We can now subtract one from the other:
(15L+9S) - (7L+9S) = 360-234
8L = 126
L = 15.75

Now sub this value back into an equation:
(5x15.75) + 3S = 120
3S = 41.25
S = 13.75

Double check these values
(7x15.75) + (9x13.75)
= 110.25 + 123.75
=234, which is consistent with above.

So a large box is 15.75kg, and a small box is 13.75kg.

Hope this helped
5 0
3 years ago
Becky bought a magazine for $3.90, and the sales tax was 8.25%. How much sales tax did Becky pay on the magazine?
igor_vitrenko [27]

Answer:

32 cents

Step-by-step explanation:

Find 8.25 percent of 3.90:

0.0825*3.90 = 0.32

3 0
3 years ago
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Solve the given number problem.
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I would say -26 because -22, -24, -26=-72
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3 years ago
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