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3 years ago

8

The Knight of Dishonor wants to attack the castle and decides that he should make a long ladder that will reach across the moat

to the top of the castle. How long must the ladder be?

1 answer:

RSB [31]3 years ago

8 0

How long is the wall or the moat?

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The graph shows the function g. Which of the following statements is NOT true? *

USPshnik [31]

Answer:

The figure above shows the graph of a function f with domain 0 ≤ x ≤ 4. Which of the following statements are true? Show Video ... If there is no c, where -2 < c < 2, for which f'(c) = 0, which of the following statements must be true? Show Video ...

Step-by-step explanation:

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3 years ago

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Need math help please

solmaris [256]

Answer:

it is 4

Step-by-step explanation:

3 times 4 = 12 and 12 + 8 = 20

brainliest plz!!!

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3 years ago

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The equations of two functions are y =-28x + 8 and y=-29x + 7. Which function is changing more

irinina [24]

<u>Answer:</u>

$y=-29x+7$ is changing more quickly.

<u>Step-by-step explanation:</u>

This is because the equation $y=-29x+7$ has a larger slope. The speed of change is determined entirely by the slope; the larger the slope, the faster the line goes up or down. It doesn't matter if it's negative or positive. -29 is the slope of the equation.

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3 years ago

Given the points (3, 2) and (6, 4), which of the following are true about the line passing through these points?

Artist 52 [7]

I don't know what 'which of the following' is referring to, but the line has a positive slope, goes through the origin, and has a slope of 2/3.

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3 years ago

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The area of a circular oil slick on the surface of the sea is increasing at a rate of [150m^2/s] how fast is the radius changing

Akimi4 [234]

Answer with Step-by-step explanation:

We are given that

$\frac{dA}{dt}=150m^2/s$

a.Radius =25 m

We have to find rate of change of radius.

We know that

Area of circle, $A=\pi r^2$

Differentiate w.r.t time

$\frac{dA}{dt}=2\pi r\frac{dr}{dt}$

Substitute the values then we get

$150=2\pi (25)\frac{dr}{dt}$

$\frac{dr}{dt}=\frac{150}{50\pi}=\frac{3}{\pi} m/s$

$\frac{dr}{dt}=\frac{3}{\pi} m/s$

b.A= $1000m^2$

Substitute the values then we get

$1000=\pi r^2$

$\pi=3.14$

$r^2=\frac{1000}{3.14}$

$r=\sqrt{\frac{1000}{3.14}}=17.8m$

$\frac{dA}{dr}=2\pi r\frac{dr}{dt}$

Substitute the values then we get

$150=2\pi(17.8)\frac{dr}{dt}$

$\frac{dr}{dt}=\frac{150}{2\pi(17.8)}=\frac{150}{35.6\pi}$ m/s

$\frac{dr}{dt}=\frac{75}{17.8\pi}$ m/s

4 0

3 years ago