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ycow [4]
3 years ago
15

Maria makes beaded necklaces. She charges a rate of $0.75 per inch in length plus $0.25 per bead as shown in the expression, whe

re x represents the number of inches and y represents the number of beads.
0.75
x
+
0.25
y
What would Maria charge for a necklace 16 inches long with 60 beads?
Mathematics
2 answers:
sergiy2304 [10]3 years ago
3 0
16x+60y
16(.75)+60(.25)
12+15=27
maria would charge $27 for this necklace
maks197457 [2]3 years ago
3 0

Step-by-step explanation:

27$

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5 0
3 years ago
A stadium has 49,000 seats. Seats sell for $25 in Section A, $20 in Section B,
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Answer:

A B C

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Johnny has 4 cups of hot cocoa the instructions tell him to add 1 pint of water for every 2 pints of cordial how much water shou
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3 0
2 years ago
A simple random sample of 60 items resulted in a sample mean of 65. The population standard deviation is 14. a. Compute the 95%
bazaltina [42]

Answer:

The 95% confidence interval for the population mean is between 61.5 and 68.5.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96*\frac{14}{\sqrt{60}} = 3.5

The lower end of the interval is the sample mean subtracted by M. So it is 65 - 3.5 = 61.5

The upper end of the interval is the sample mean added to M. So it is 65 + 3.5 = 68.5

The 95% confidence interval for the population mean is between 61.5 and 68.5.

6 0
3 years ago
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erma4kov [3.2K]

Answer: the answer is 0.35 because

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0.34875586404 rounded to 2 decimal points is 0.34875586404

6 0
2 years ago
Read 2 more answers
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