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Mrrafil [7]
3 years ago
12

Alonzo, Enio, and George bought a watercolor paint box for $15.35 and 3 brushes for $2.25 each. They had a coupon for $2.00 off

their purchase. They split the remaining cost equally. Which expression could be used to find the amount each person paid?
A. (15.35÷3)+(2.25×3)−2
B. (15.35÷3)+2.25×(3−2)
C. [15.35+(2.25×3)−2]÷3
D. (2.25+15.35+3)÷3
Mathematics
1 answer:
Pani-rosa [81]3 years ago
7 0

Answer:

C

Step-by-step explanation:

To solve this question we would use , 15.35+(2.25×3)−2]÷3.

Answer = C

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I need help pls <br><br> What is the value of x?
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10. The fifth term of an arithmetic sequence is 11 and the tenth term is 41. What is the first term? ​
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a_{5}=a+4d=11\\a_{10}=a+9d=41

Solve the above equations,

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3 0
3 years ago
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Assume the population has a normal distribution. A sample of 25 randomly selected students Has a mean test score of 81.5 With a
Natasha_Volkova [10]

Answer:

The 90% confidence interval for the mean test score is between 77.29 and 85.71.

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 25 - 1 = 24

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 2.064

The margin of error is:

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The 90% confidence interval for the mean test score is between 77.29 and 85.71.

6 0
3 years ago
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