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madam [21]
3 years ago
9

1. a model rocket is fired vertically into the air at 320 ft/s. The expression -16t^2+320t gives the rocket's height after t sec

onds. factor this expression
Factor each expression or state if it cannot be factored.

1. 13q^4+2p^2

2. 14n^3+7n+7n^2

3.2b(b+3)+5(b+3)

4.4(x-3)-x(y+2)

5.7r^3-35r^2+6r-30
Mathematics
1 answer:
zloy xaker [14]3 years ago
7 0
1A.) Cannot Be Factored

2B.) 7n(2n + 7 + n)

3C.) (b+3) (2b + 5)

4D.) -(xy - 2x + 12)

5E.) (r-5)(7r^2+6)
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Step-by-step explanation:

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Justification:

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Read 2 more answers
The radius of a circle is increasing at a rate of 6 centimeters per minute. Find the rate of change of the area when the radius
KonstantinChe [14]

Answer:

The rate of change is of of the area when the radius is 4 centimeters 48\pi square centimeters.

Step-by-step explanation:

Area of a circle:

The area of a circle of radius r is given by:

A = \pi r^2

Implicit derivative:

To solve this question, we have to derivate implictly the equation as a function of t. Thus:

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

The radius of a circle is increasing at a rate of 6 centimeters per minute.

This means that \frac{dr}{dt} = 6

Find the rate of change of the area when the radius is 4 centimeters.

This is \frac{dA}{dt} when r = 4. Thus

\frac{dA}{dt} = 2\pi r \frac{dr}{dt} = 2\pi(4)(6) = 48\pi

The rate of change is of of the area when the radius is 4 centimeters 48\pi square centimeters.

4 0
3 years ago
How many times does 4 1/2 fit into 6 3/4
torisob [31]

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answer: 1.5 times

8 0
3 years ago
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