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melamori03 [73]
3 years ago
15

The mean number of travel days per year for salespeople employed by three hardware distributors needs to be estimated with a 0.9

0 degree of confidence. For a small pilot study, the mean was 150 days and the standard deviation was 14 days. If the population mean is estimated within two days, how many salespeople should be sampled?

Mathematics
1 answer:
bearhunter [10]3 years ago
7 0

Answer:

133

Step-by-step explanation:

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This is geometry plz
Sergio039 [100]

Answer:

Step-by-step explanation:

a line parallel to the equation would have the same slope (7/8)

so what we know so far is

y = 7/8x + b

since it has to go through point C (-4, 8)

we’ll plug in those values for x and y (x = -4, y = 8)

8 = 7/8(-4) + b

8 = -28/8 + b

8 = -3.5 + b

b = 11.5

so the equation is

y = 7/8x + 11.5

7 0
3 years ago
Help, please!! What is mA?
Inga [223]

Answer:

38°

Step-by-step explanation:

The measure of required angle can be obtained by using cosine law.

From the given triangle we find that:

a = 5, b = 3, c = 7,

Since,

cos (A) = (b^2 +c^2 - a^2) /2bc

Therefore,

cos (A) = (3^2 + 7^2 - 5^2) /(2*3*7)

cos (A) = (9 + 49 - 25) /(42)

cos (A) = (33) /(42)

cos (A) = 0.785714286

A = arccos(0.785714286)

A = 38.213210675°

A = 38°

4 0
3 years ago
Solve for m.<br><br> 5m+72=−2m+52
Tom [10]
M=-20/7. .........!!!!!!!!
6 0
3 years ago
Read 2 more answers
7 and a number equals 21​
torisob [31]

Answer:

7x3=21

Step-by-step explanation:

7+7+7=21, 7x3=21

5 0
2 years ago
Below an equation is modeled . What value of x makes this equation true?
Strike441 [17]
5x + 6 = 1
Subtract 6 from both sides.
5x = -5
Divide from both sides.
x = -1 (ANSWER)

hope this helps!!
5 0
3 years ago
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