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2 years ago

Students in Mrs. Curry's class recorded the amount of snowfall in January and February.

Mathematics

1 answer:

Mila [183]2 years ago

7 0

Answer:

A and C

Step-by-step explanation:

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Distance formula: Does the point (1, ) lie on the circle shown? Explain.

Gnesinka [82]

Answer: Is there a picture you could show? I don't know unless I can see a picture.

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3 years ago

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The point (0,10) is called a ____-intercepta?

RUDIKE [14]

Answer: y-intercept

Explanation: A point is classified as (x, y) and in order for this ordered pair to be a y-intercept, we need to have the x-coordinate be 0.

Since the x-coordinate is 0, this is a y-intercept.

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3 years ago

Let A(t) be the area of a circle with radius r(t), at time t in min. Suppose the radius is changing at the rate of drdt=6 ft/min

mylen [45]

Answer:

The rate of change is $108\pi$ ft^(2)/min

Step-by-step explanation:

The area of a circle is given by the following equation:

$A(t) = \pi r^{2}$

To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So

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

We have that:

$\frac{dr}{dt} = 6, r = 9$ .

We want to find $\frac{dA}{dt}$

$\frac{dA(t)}{dt} = 2\pi*9*6$

$\frac{dA}{dt} = 108\pi$

Since the area is in square feet, the rate of change is in ft^(2)/min.

So the rate of change is $108\pi$ ft^(2)/min

5 0

3 years ago

Solve for x. x/7=-3 -21 -10 4 21

frez [133]

Answer:

D 21

Step-by-step explanation: x/7 = 3

isolate x by multiplyig both sides by 7: (7)(x/7) = (3)(7)

x = 21

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3 years ago

Solve -7<3x+2<5 (Multiple choice, picture added)

pishuonlain [190]

$\\ \sf\longmapsto -7$

Substract 2 from all sides

$\\ \sf\longmapsto -7-2$

$\\ \sf\longmapsto -9$

Divide all sides by 3

$\\ \sf\longmapsto \dfrac{-9}{3}$

$\\ \sf\longmapsto -3$

Option A is correct

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2 years ago

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