4 years ago

PLEASE HELP ASAP!!!!!!!!!!!

Mathematics

1 answer:

Serga [27]4 years ago

4 0

$8x^2y^{-2}=\dfrac{8x^2}{y^2}\\\\\\\dfrac{8\cdot(-1)^2}{2^2}=\dfrac{8\cdot1}{4}=\dfrac{8}{4}=\boxed{2}$

Answer A)

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Kitty [74]

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3 years ago

28. How much plain yogurt will you need to make 2 1/2 dozen cookies? Show your work.

xxMikexx [17]

Answer:

$\frac{5}{6}$ cups

Step-by-step explanation:

Normally, when working with mixed numbers, I would prefer to turn them into improper fractions first before evaluating.

1 $\frac{1}{2}$ cookies --- $\frac{1}{2}$ cup plain yogurt

$\frac{3}{2}$ cookies --- $\frac{1}{2}$ cup plain yogurt

2 $\frac{1}{2}$ cookies --- ? cup plain yogurt

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3 years ago

Please help! What is the value for y? Enter your answer in the box. y =

Amiraneli [1.4K]

The little lines through the two sides mean they are the same length.

When the two sides are the same length the 2 corresponding angles are also the same, so Angle A and Angle B are both 34 degrees.

The three inside angles of a triangle equal 180, so angle C = 180 - 68 = 112

Angle C is given as 4y, so 4y = 112

Divide both sides by 4:

y = 112 / 4

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3 years ago

What is the volume of a sphere with a radius of 9.5 ft, rounded to the nearest tenth of a cubic foot?

DiKsa [7]

Answer:

V = 3591.4 ft³

Step-by-step explanation:

The formula for the volume of a sphere whose radius is given is

V = (4/3)πr³

Here we have V = (4/3)(3.14)(9.5 ft)³, or:

V = 3591.4 ft³

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4 years ago

In a room with 10 people, how many different handshakes are possible?

Ganezh [65]

45 handshakes are possible

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3 years ago

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