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Anika [276]
3 years ago
8

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Mathematics
1 answer:
Rama09 [41]3 years ago
3 0
8+9-12-25:5+28=28

:))))
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Saw a board 5 ft 1 in. Long into six equal pieces. If the loss per cut is 1/5 in., how long will each piece be?
Pie

Answer:

The length of each piece is 0.833 ft.

Step-by-step explanation:

Length of board, L = 5 ft 1 inch

loss per cut = 1/5 inch

The board should be cut by 5 times to get the 6 pieces.

The loss in 5 cuts = 5 x 1/5 = 1 inch

So, the length of each piece is

L' =\frac{5 ft 1 in - 1in }{6}\\\\L' =\frac{5}{6}\\\\L' = 0.833 ft

5 0
3 years ago
An educational organization in California is interested in estimating the mean number of minutes per day that children between t
Hatshy [7]

Answer:

The critical value for a 98% CI is z=2.33.

The 98% confidence interval for the mean is (187.76, 194.84).

Step-by-step explanation:

We have to develop a 98% confidence interval for the mean number of minutes per day that children between the age of 6 and 18 spend watching television per day.

We know the standard deveiation of the population (σ=21.5 min.).

The sample mean is 191.3 minutes, with a sample size n=200.

The z-value for a 98% CI is z=2.33, from the table of the standard normal distribution.

The margin of error is:

E=z\cdot \sigma/\sqrt{n}=2.33*21.5/\sqrt{200}=50.095/14.142=3.54

With this margin of error, we can calculate the lower and upper bounds of the CI:

LL=\bar x-z\cdot\sigma/\sqrt{n}=191.3-3.54=187.76\\\\\\UL=\bar x+z\cdot\sigma/\sqrt{n}=191.3+3.54=194.84

The 98% confidence interval for the mean is (187.76, 194.84).

4 0
3 years ago
Solve for X<br> Q<br> |2x°<br> 8<br> 8.<br> 52
Over [174]

Answer:

8.

Step-by-step explanation:

6 0
3 years ago
Fourteen pounds of beans are distributed equally into 10 bags to give out at the food bank. How many pounds of beans are in each
grin007 [14]

Answer:

1.4 pounds

Step-by-step explanation:

to get this ancwer you divide 14 by 10 witch gives you 1.4 pounds

6 0
3 years ago
PLEASE HELP<br> Simplify the expression 5^3+3(5-3)<br> A.137<br> B.131<br> C.27<br> D.21
mojhsa [17]

Answer:

the correct answer is 131

Step-by-step explanation:

5^3 +3(2)

= 125 +6

=131

5 0
3 years ago
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