Let A be the area of circle of radius r that is changing with respect to time. If dr/dt is constant, is dA/dt constant? Expain.

Mathematics

1 answer:

UkoKoshka [18]4 years ago

8 0

Hello,

A=πr²
dA/dt=2πr*dr/dt
if dr/dt is constant, dA/dt is linear.

You might be interested in

Please help due soon please and thank you

Sunny_sXe [5.5K]

The answer is A, 75 degrees
add all like terms
2x+196
all triangles equal 180 degrees
2x+196=180
subtract the 196 from 180
2x= -16
divide
x= -8
plug into angle A
-8+83
A=75

4 0

2 years ago

CAN SOMEONE HELP ME WITH THIS PROBLEM????????????????????

Phantasy [73]

Answer:

Hi there!

For 1. it should be answer b

For 2. it would be answer c

For 3. it is answer a

Hope I Helped!

6 0

4 years ago

Helppp me plz Srry again

Kay [80]

Step-by-step explanation:

I am really very sorry about this because I can't answer of this question because I can't understand I am sooooo sorry

4 0

3 years ago

Devon's father is installing new wood flooring. He bought boards that are 10 ft long, 3/4 in. thick, and 11/24 in. wide. Determi

kvv77 [185]

Answer:

36 boards

Step-by-step explanation:

The boards are as long as the room, so I only had to worry about the width. If the boards were 1/2 ft wide, I would need 2 boards for every foot of width. For 16 ft, I would need 32 boards.

Instead of dividing, I wrote the equivalent multiplication by multiplying by the reciprocal of 11/24 (the reciprocal of 11/24 is 24/11)

I simplified by dividing both 2 and 24 by 2, and both 11 and 33 by 11.

Therefore he needs 36 boards

5 0

3 years ago

The sum of two numbers is 27. One number is 3 more than the other. Write and solve a system of equations to find the two numbers

givi [52]

X + y = 27
x = y + 3

y + 3 + y = 27
2y + 3 = 27
2y = 27 - 3
2y = 24
y = 24/2
y = 12

x = y + 3
x = 12 + 3
x = 15

ur numbers are 12 and 15

7 0

3 years ago

Read 2 more answers