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Anettt [7]
2 years ago
5

Need help please answer this.

Mathematics
1 answer:
topjm [15]2 years ago
5 0

Answer:

Job A pays 4.75 more per hour than job B

Step-by-step explanation:

A= 70 per hour

B= 65.25 per hour

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a. 4

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2 years ago
A substance with a half life is decaying exponentially. If there are initially 12grams of the substance and after 70 minutes the
dybincka [34]

Answer:

Step-by-step explanation:

Use the half life formula

N=N_0e^{kt} where N is the amount after decay, No is the initial amount, e is Euler's number, k is the decay constant, and t is the time in minutes. For us, the first equation looks like this:

7=12e^{k(70)} and we will solve that for k and then use that value of k in the second equation to find time.

Begin by dividing 7 by 12 to get

\frac{7}{12}=e^{k(70)} Now take the natural log of both sides since the natural log and that e are inverses. The e then disappears:

ln(\frac{7}{12})=k(70)

Plug the left side into your calculator and then set it equal to the right side, giving us:

-.5389965007=70k

Divide both sides by 70 to get the k value of

k = -.00769995

Now the second equation looks like this:

2=12e^{(-.00769995)t where t is our only unknown now that we know k.

Begin by dividing both sides by 12 to get

\frac{1}{6}=e^{-.00769995t and take the natural log of both sides again to eliminate the e:

ln(\frac{1}{6})=-.00769995t

Take care of the left side on your calculator to get

-1.791759469 = -.00769995t and divide both sides by -.00769995 to get

t = 232.697 minutes

4 0
2 years ago
There are 790 cal in 610 ounce bottles of apple juice how many calories are there in one 10 ounce bottle of apple juice
Akimi4 [234]
I would say 18 because 790-610= 180 and 180÷10= 18
7 0
3 years ago
The students at Mill Middle School held a class election. Alyssa and Megan were the only two candidates running for class presid
Dvinal [7]
In this problem, you add 21 and 29. That results in 50 and you can either:
1. Divide 29 by 50 and multiply 100. 29/50= .58 * 100= 58% or
2. Since percentage is based on 100 and the denominator is 50, multiply the top and bottom by 2 like so.
29 x 2 =  58
---    --    -----  so that makes your percentage 58.
50 x 2 = 100

Hope this is clear enough.
7 0
3 years ago
Read 2 more answers
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