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TEA [102]
2 years ago
7

Rubin has 6 rolls of pennies containing 50 coins each, 5 rolls of nickels containing 40 coins each, 4 rolls of dimes containing

50 coins each, and 3 rolls of quarters containing 40 coins each. How much money does he have? A. $68.40 B. $8.20 C. $17.50 D. $63.00​
Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
4 0
<h2>Answer</h2>

A po pa brainliest

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What is the reciprocal of -b/3
Ludmilka [50]

Answer:

-3/b

Step-by-step explanation:

The reciprocal of -b/3 is -3/b

8 0
2 years ago
Three relatives will share an inheritance of 196,800 in the ratio of 3 to 7 to 2. How many dollars of the inheritance will each
navik [9.2K]

Answer:

49200

114800

32800

Step-by-step explanation:

196800/12=ans

ans * 3

ans * 7

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6 0
3 years ago
In a random sample of fivefive microwave​ ovens, the mean repair cost was ​$75.0075.00 and the standard deviation was ​$13.0013.
Radda [10]
<h2>Answer with explanation:</h2>

As per given , we have

Sample size : n= 5

Degree pf freedom = : df= 5-1=4

\mu=\$75.00

\sigma=\$13.00

Significance level for 90% confidence = \alpha=1-0.90=0.1

Using t-value table , t-critical value for 90% confidence:

t_{\alpha/2, df}=t_{0.05, 4}=2.132.

Margin of error of \mu: E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\(2.132)\dfrac{13}{\sqrt{5}}=12.3949720129\approx12.39

Interpretation : The repair cost will be within $12.39 of the real population mean value \mu 90% of the time.

7 0
3 years ago
Can someone please help me with this question?
JulsSmile [24]
I believe that the correct answer C.
7 0
2 years ago
What is 5+2? Ive been totally stuck on this for the longest time. I really need help
eduard

that's a tricky one!

but it is 7 i believe

5 0
2 years ago
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