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diamong [38]
3 years ago
8

Devon has 100 dimes and quarters. If the total value of what he has is $21.40, how many of each coin type does he have?

Mathematics
2 answers:
timurjin [86]3 years ago
5 0

Answer:

4 dimes i think and 5.25 worth of quarters

Step-by-step explanation:

Alexandra [31]3 years ago
5 0
I think it’s 4 dimes with about 5.25 left
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alexandr402 [8]

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#1 goes to C.

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6 0
2 years ago
A kg of aluminum earns a collector $2.50 at the recycling center. If I collect 14 kg. Of aluminum cans, how much money will I ea
saul85 [17]

Answer:

$ 35

Step-by-step explanation:

\frac{1}{14}  =  \frac{2.5}{x}

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8 0
3 years ago
Read 2 more answers
What is the value of 10×+z=150<br>​
JulijaS [17]

Answer:

<h2><u><em>15</em></u></h2>

Step-by-step explanation:

what is the value of 10×+z=150

10× (+z) = 150

10 × z = 150

z = 150 : 10

z = 15

-----------------------

check

10 × 15 = 150

the answer is good

8 0
2 years ago
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A Rasmussen Reports survey of 1,000 US adults found that 42% believe raising the minimum wage will help the economy. Construct a
vitfil [10]

Answer:

(0.3798, 0.4602)

Step-by-step explanation:

Let p be the true proportion of US adults who believe raising the minimum wage will help the economy. A point estimate for p is \hat{p}=0.42 and a good aproximation (because we have a large sample) for the standard deviation of \hat{p} is \sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{0.42(0.58)/1000}=0.0156. Therefore, a 99% confidence interval for p is given by \hat{p}\pm z_{\alpha/2}\sqrt{\frac{\hat{p}(1-\hat{p})}{n}} where \alpha=0.01 and z_{\alpha/2} is the \alpha/2th quantile of the standard normal distribution, so we have, 0.42\pm z_{0.005}0.0156, i.e., 0.42\pm(-2.5758)(0.0156) or equivalently (0.3798, 0.4602).

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3 years ago
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Helga [31]
......................... 1/2
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2 years ago
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