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3 years ago

What is 20 plus -14?

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

7 0

20 + -14 = 6
I hope I helped you

Keith_Richards [23]3 years ago

5 0

Answer:

Step-by-step explanation:

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QUICK! The radius of a cylindrical construction pipe is 2 ft. If the pipe is 16 ft long, what is its volume?

Alika [10]

Answer:

V=201.06 ft²

Step-by-step explanation:

V= $\pi$ r²h

V= $\pi$ 2²16

V=64 $\pi$

V=201.06

4 0

3 years ago

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There are twelve shirts in my closet. Five are red, four are blue, and three are green. What is

Bond [772]

Answer:

the probability that I chose red or blue is 75%

75%

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3 years ago

a carpenter lays 16 squares feet of tiles in 1.5 of an hour.how many squares feet of tiles does the carpenter lay per hour?

lesya [120]

I believe that the answer is about 11 square feet because when you divide 16 by 1.5, you get 10.666666667, and most likely they won't be accepting an answer like that. So, you round to the nearest square feet and you get 11.

6 0

3 years ago

Determine the two positive integers each square root falls between.

sertanlavr [38]

Answer:

10. (5, 6)

11. (1, 2)

12. (7, 8)

13. (10, 11)

14. (27, 28)

15. (11, 12)

Step-by-step explanation:

If you're not familiar with the squares of small integers, your calculator can help you figure this.

10. √28 ≈ 5.291 . . . . between 5 and 6

11. √3 ≈ 1.732 . . . . between 1 and 2

12. √59 ≈ 7.681 . . . . between 7 and 8

13. √115 ≈ 10.724 . . . between 10 and 11

14. √772 ≈ 27.785 . . . . between 27 and 28

15. √140 ≈ 11.832 . . . . between 11 and 12

5 0

3 years ago

When it is operating properly, a chemical plant has a daily production rate that is normally distributed with a mean of 885 tons

-BARSIC- [3]

Answer:

The test statistic Z = 1.844 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

Yes he is right

The manager claims that at least 95 % probability that the plant is operating properly

Step-by-step explanation:

Explanation:-

Given data Population mean

μ = 885 tons /day

Given random sample size

n = 60

mean of the sample

x⁻ = 875 tons/day

The standard deviation of the Population

σ = 42 tons/day

Null hypothesis:- H₀: The manager claims that at least 95 % probability that the plant is operating properly

Alternative Hypothesis :H₁: The manager do not claims that at least 95 % probability that the plant is operating properly

Level of significance = 0.05

The test statistic

$Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{875 -885}{\frac{42}{\sqrt{60} } }$

$Z = \frac{-10}{5.422} = -1.844$

|Z| = |-1.844| = 1.844

The tabulated value

$Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96$

The calculated value Z = 1.844 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

Conclusion:-

The manager claims that at least 95 % probability that the plant is operating properly

8 0

3 years ago