3 years ago

The right rectangular prisms are similar.

Mathematics

1 answer:

rewona [7]3 years ago

8 0

Answer:

A, B, E

Step-by-step explanation:

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2x+5y=20. , -2x+20y=-90. one solution. infinity many ir no solution. use elimination to find your answer

scoundrel [369]

2x+5y=20
X=10-2.5y

-2(10-2.5y)+20y=-90
-20+5y+20y=-90
25y=-70
Y=2.8

2(2.8)+5y=20

5.6+5y=20
5y=14.4
Y=2.88

CHECK:
2(2.8)+5(2.88)=20

5 0

4 years ago

Which shows the following expression after the negative exponents have been eliminated? xy^-6/x^-4 y^2, x=/0 y=/0

Tom [10]

For this case we have the following expression:
(xy ^ -6) / (x ^ -4y ^ 2)
By power properties we can rewrite the expression as:
(x * x ^ 4) / (y ^ 6 * y ^ 2)
Then, for power properties:
Same exponents are added:
(x ^ (4 + 1)) / (y ^ (6 + 2))
(x ^ 5) / (y ^ 8)
Answer:
An expression after the negative exponents have been eliminated is:
(x ^ 5) / (y ^ 8)

3 0

3 years ago

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Find the perimeter of a square with area 64 cm/2

finlep [7]

The answer is 32cm :))))))

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3 years ago

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Tyler can swim 1/2 miles in 1/3 hours at a constant speed. At this rate , how fast does Tyler swin in miles for hours?

gladu [14]

Miles. Hours

1/2 = 1/3
1 = 2/3
1 1/2 = 3/3 or 1

= 1