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2 years ago

7

A.aBoC

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1 answer:

adoni [48]2 years ago

8 0

Answer:

?

Step-by-step explanation:

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Janice drove 392 miles in 7 hours. What is the average number of miles she drove per<br> hour?

amm1812

Answer:

Step-by-step explanation:

Total Distance = 392 miles

Total Time = 7 hours

Average Miles / hour = 392 miles / 7 hours

Average Miles / hour = 56 miles per hour

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3 years ago

What is the end behavior of the function <img src="https://tex.z-dn.net/?f=f%28x%29%3D-%5Cfrac%7B1%7D%7B4%7D%20x%5E2" id="TexFor

Anarel [89]

Answer:

<em><u>Option A </u></em>will be your answer

Step-by-step explanation:

<em><u>hope it helps </u></em><em><u>.</u></em><em><u>.</u></em>

<em><u>have</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>great</u></em><em><u> </u></em><em><u>day</u></em><em><u>!</u></em><em><u>!</u></em>

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2 years ago

Problem PageQuestion The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate paramet

asambeis [7]

Answer:

<em>t = 1.51</em>

Step-by-step explanation:

<u>Exponential Model</u>

The exponential model is often used to simulate the behavior of a magnitude that either grow or decay in proportion to the existing amount of that magnitude.

The model can be expressed as

$M=M_oe^{kt}$

In this case, Mo is the initial mass of the radioactive substance and k is a constant which value is positive if the mass is growing or negative if the mass is decaying.

The value of k is not precisely given in the question, we are assuming $k=-0.2$

The model is now

$M=M_oe^{-0.2t}$

We are required to compute the time it takes the mass to reach one-half of its initial value:

$\displaystyle \frac{M_o}{2}=M_oe^{-0.2t}$

Simplifying

$\displaystyle \frac{1}{2}=e^{-0.2t}$

Taking logarithms

$\displaystyle ln\frac{1}{2}=ln(e^{-0.2t})=-0.2t$

Solving for t

$\displaystyle t=-\frac{ln\frac{1}{2}}{0.2}=1.51$

6 0

3 years ago

Use the descriminant to describe the roots of each equation. Then select the best description. 16x^2+8x+1=0

Pachacha [2.7K]

Use the values of a, b, and c to find the discriminant:
0
I don't know if this is correct

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2 years ago

Any one know the answer for this question??????

Romashka [77]

Answer:

C) y > 0

Step-by-step explanation:

I graphed it

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1 year ago