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3 years ago

14

How to find the missing variable?

1 answer:

forsale [732]3 years ago

8 0

50 + 3x = 7x + 12
This is because of the exterior angle theorem.

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There are red and green apples in a crate.

Vladimir79 [104]

Answer:

28

Step-by-step explanation:

60 apples by 5 is 12. When Georgia put some more apples in we now have to divide 60 by 3 which is 20 and then multiply that by 2 which is 40. So, if the ratio was 1:3 it would be 20:60 but it is 2:3 so the answer is 40:60. Do 40 minus 12 to find how much Georgia added. 40 minus 12 is 28.

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3 years ago

What is the base 2 representation of 10

eduard

0.8 is the correct answer

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3 years ago

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Where is the figure KingBroski?

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4 years ago

PLEASE I NEED HELP, ASAP!!<br><br> –4(5–2a)+3(a–4)=6(2–a)–5a

creativ13 [48]

The answer to this question is a=2

8 0

3 years ago

Read 2 more answers

Air is being pumped into a spherical balloon at a rate of 5 cm^3/min. Determine the rate at which the radius of the balloon is i

Romashka-Z-Leto [24]

0.08 cm/min

Step-by-step explanation:

Given:

$\dfrac{dV}{dt}=5\:\text{cm}^3\text{/min}$

Find $\frac{dr}{dt}$ when diameter D = 20 cm.

We know that the volume of a sphere is given by

$V = \dfrac{4\pi}{3}r^3$

Taking the time derivative of V, we get

$\dfrac{dV}{dt} = 4\pi r^2\dfrac{dr}{dt} = 4\pi\left(\dfrac{D}{2}\right)^2\dfrac{dr}{dt} = \pi D^2\dfrac{dr}{dt}$

Solving for $\frac{dr}{dt}$ , we get

$\dfrac{dr}{dt} = \left(\dfrac{1}{\pi D^2}\right)\dfrac{dV}{dt} = \dfrac{1}{\pi(20\:\text{cm}^2)}(5\:\text{cm}^3\text{/min})$

$\:\:\:\:\:\:\:= 0.08\:\text{cm/min}$

3 0

3 years ago