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liq [111]
3 years ago
6

Jorge has some dimes and quarters. He has 10 more dimes than quarters and the collection of coins is worth $2.40. How many dimes

and quarters does Jorge have?
Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

14 dimes and 4 quarters

Step-by-step explanation:

x= number of dimes

y=number of quarters

x-10=y

0.10x+0.25y=2.40

substitute for y

0.10x+0.25(x-10)=2.40

0.35x-2.50=2.40

0.35x=4.90

x=14

y=4

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Negative one over two equals negative five over eighteen h
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Answer:

the answer is h = 5 / 9.

Step-by-step explanation:

Given is "negative one over two equals negative five over eighteen h"

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Convert 2500mm2 into m2<br> How do I do it?
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The sample size is 15.

The first step to solve this problem is finding how many degrees of freedom there are, that is, the sample size subtracted by 1. So

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Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

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Now, we need to find the standard deviation of the sample. That is:

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The 95% of confidence interval for the mean penetration resistance for this soil is (2.0823, 3.1977).

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