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3 years ago

What is 10% of 80? ( IT NOT A ) A $0.08 B 0.8 C$88 D 8

Mathematics

1 answer:

nalin [4]3 years ago

8 0

Answer:

Step-by-step explanation:

turn the percent into a decimal

multiply 0.10 by 80

0.10*80

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You are situated 300 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building

nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

$h=\sqrt{x^2+y^2}$

The rate of change for the distance between you and the elevator is given by:

$\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}$

$-16=\frac{dh}{dy}*\frac{dy}{dt}$

$\frac{dh}{dy}=\frac{d}{dy} (\sqrt{x^2+y^2})\\$

Applying the chain rule:

$u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}$

Therefore, at x=300 and y = 500, dy/dt is:

$-16=\frac{y}{\sqrt {(x^2+y^2)}}*\frac{dy}{dt}\\-16=\frac{500}{\sqrt {(300^2+500^2)}}*\frac{dy}{dt}\\\frac{dy}{dt}=-18.66\ ft/s$

The elevator is descending at 18.66 ft/s.

7 0

3 years ago

Predict the number of pancakes that would have 48 chocolate chips

Montano1993 [528]

The answer would be 6 number of pancakes. Hope it helps

5 0

3 years ago

I need help I’m stuck

taurus [48]

Answer:

Step-by-step explanation:

brain math

3 0

3 years ago

Instructions:Select the correct answer.

QveST [7]

2 * 5 = 10
10 * .20 = 2
10 - 2 = 8
$8

4 0

3 years ago

Read 2 more answers

May I have some help?

muminat

Answer:

Step-by-step explanation:

16. 180=8x+2x

x=10°

17a. 180=(180-126)+2x+(180-6x)

x=14°

17b. 180=4x+x+65

x=23°

3 0

3 years ago