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3 years ago

Which expression is equivalent to (r-7)6?

Mathematics

1 answer:

lapo4ka [179]3 years ago

3 0

Answer:

Step-by-step explanation:

The expression equivalent to

$( r^{-7})^{6} \\is\\\frac{1}{r^{42} }$

Hope it helps :)

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A diver descends to a depth of –25.6 feet relative to sea level. How many feet must the diver ascend to reach sea level?

MArishka [77]

Answer:

the Answer would be c

Step-by-step explanation:

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2 years ago

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If there are 160 calories in 8 ounces of milk then, how many calories are there in a 15 ounce cup of milk.

jenyasd209 [6]

300, because 8x20=160 so 1 ounces= 20 calories
15x20=300

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ASAP Please help

oksian1 [2.3K]

Answer:

The center is at ( (-1, -2) and the radius is 5.

Step-by-step explanation:

X^2 + 2X + Y^2 + 4Y = 20

Complete the square on the x and y terms.

(x + 1)^2 -1 + (y + 2)^2 - 4 = 20

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wind resistance varies jointly as an objects surface area and velocity. if an object traveling at 55 miles per hour with a surfa

nikdorinn [45]

Answer:

25 miles per hour

Step-by-step explanation:

Given

$W = Wind\ resistance$

$A = Surface\ Area$

$V = Velocity$

The joint variation can be represented as:

$W\ \alpha\ A*V$

Where:

$V = 55; A = 20; W = 220$

Required

Find V, when: $A = 55; W = 275$

We have:

$W\ \alpha\ A*V$

Express as an equation

$W= k *A*V$

Where k is the constant of variation

Make k the subject

$k = \frac{W}{A*V}$

When: $V = 55; A = 20; W = 220$

We have:

$k = \frac{220}{20 *55 }$

$k = \frac{220}{1100}$

$k = 0.2$

When: $A = 55; W = 275$

We have:

$k = \frac{W}{A*V}$

Substitute: $A = 55; W = 275$ and $k = 0.2$

$0.2 = \frac{275}{55 * V}$

Make V the subject

$V= \frac{275}{55 * 0.2}$

$V= \frac{275}{11}$

$V= 25$

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3 years ago

Rewrite the expression in the form z^n.<br> z^3/4 x z^2

grin007 [14]

Step-by-step explanation:

here's the answer to your question

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