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2 years ago

A plaine's altitude changes by -1,000 feet. Is the plane going up or down?

Mathematics

1 answer:

SOVA2 [1]2 years ago

8 0

The plane is going down.

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Find the surface area of a sphere with a volume of 36π in3.

swat32

First use known volume to solve for radius:
$V=\frac{4}{3}\pi r^{3}$
$r=\sqrt[3]{\frac{3V}{4\pi}}$
$r=\sqrt[3]{\frac{3(36\pi)}{4\pi}}$
$r=\sqrt[3]{27}$
$r=3$

Then use the radius to get the surface area:
$A_{surf}=4 \pi r^{2}$
$A_{surf}=4 \pi 3^{2}$
$A_{surf}=4 \pi 9$
$A_{surf}=36\pi\approx113.09$

6 0

2 years ago

3(2x - 4) + x = 9<br> help with homework

natita [175]

6x - 12 + x = 9

6x + x - 12 = 9

Collect like terms

7x - 12 = 9

Add both sides 12

7x - 12 + 12 = 9 + 12

7x = 21

Divide both sides by 7

7x ÷ 7 = 21 ÷ 7

x = 3

7 0

2 years ago

Read 2 more answers

What is the slope of a line that is perpendicular to the line<br> v= -1/3x - 6

Amiraneli [1.4K]

Answer:

Step-by-step explanation:

the slope of a perpendicular line is the negative reciprocal of the original slope

a reciprocal is the inverse of a number, to find the reciprocal, just flip the numerator and denominator

in this cause, the slope is -1/3

the negative of it is 1/3 and the reciprocal is 3

therefore the slope of the perpendicular line is 3

6 0

3 years ago

27 in exponetial notation

docker41 [41]

Answer:

3^3

Step-by-step explanation:

3x3x3=27

7 0

2 years ago

Combine the like terms to create an equivalent expression <br> 4z- (-3z)

NNADVOKAT [17]

Answer:

Step-by-step explanation:

subtracting a negative is like adding

$4z - (-3z)\\4z+3z\\7z$

4 0

3 years ago