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denis-greek [22]
3 years ago
11

A bad contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the coins, 18% are pennies and 42% are dimes

. There are 3 more nickels than pennies. How much money does the bag contain?
The bag contains $_____.... ​
Mathematics
2 answers:
Marina CMI [18]3 years ago
5 0

Answer:

$2.64

Step-by-step explanation:

9 coins are pennies (reply to my comment if you want to know how I got it)

19 coins are dimes (reply to my comment if you want to know how I got it)

9 (pennies) + 4 = 13 (nickels)

$1.90 (dimes) + $0.09 (pennies) + $0.65 (nickels) = $2.64

Olin [163]3 years ago
5 0
Answer:
$2.64
Step-by-step explanation:
9 coins are pennies (reply to my comment if you want to know how I got it)
19 coins are dimes (reply to my comment if you want to know how I got it)
9 (pennies) + 4 = 13 (nickels)
$1.90 (dimes) + $0.09 (pennies) + $0.65 (nickels) = $2.64
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Suppose Y(t) = 25e^3t + 12 represents the number of bacteria present at time t minutes. At what time will the population reach 1
Levart [38]

Given:

The given function is:

Y(t)=25e^{3t}+12

Where Y represents the number of bacteria present at time t minutes.  

To find:

The time taken by bacteria population to reach 100 bacteria.

Solution:

We have,

Y(t)=25e^{3t}+12

Putting Y(t)=100, we get

100=25e^{3t}+12

100-12=25e^{3t}

88=25e^{3t}

Divide both sides by 25.

\dfrac{88}{25}=e^{3t}

Taking ln on both sides, we get

\ln (\dfrac{88}{25})=\ln e^{3t}

\ln(\dfrac{88}{25})=3t                  [\because \ln e^x=x]

Divide both sides by 3.

\dfrac{1}{3}\ln(\dfrac{88}{25})=t

Therefore, the required time is \dfrac{1}{3}\ln(\dfrac{88}{25}) minutes.

3 0
3 years ago
How to find the real number solution of the equation x3+27x=9x2+27?
Alina [70]
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3 0
3 years ago
when 55 is added to a certain number and the sum is divided by 3 , the result is 4 times the original number what is the origina
gogolik [260]

Answer:

4.99

Step-by-step explanation:

i cant remember how i got 4.99 but can show u how to check

= 55 +<u> 4.99 </u>= 59.99

59.99 divide <u>3</u> = 19.99666667

= 19.99666667 divide 4 (working in reverse as it says 4 times the orig no.)

= 4.99 (was rounded)

7 0
3 years ago
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Xelga [282]
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7 0
3 years ago
Need some help here
Natalija [7]

Answer:

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