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Tamiku [17]
2 years ago
8

it taken 12 days for 10 men assemble a machine how long could it take for 15 men to assemble the machine?​

Mathematics
1 answer:
fenix001 [56]2 years ago
8 0
It will take 17 men to assemble a machine
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An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $5900 and his st
Ghella [55]

Answer:

Step-by-step explanation:

Final Answer: 19.5%

4 0
2 years ago
Select all expressions that are equivalent to 2( - 2x + 5) +x
Firdavs [7]

Answer:

2) -3x+10

4) -4x+10+x

Step-by-step explanation:

Use the distributive property to get rid of the parentheses.

(2 × -2x) + (2 × 5) + x

-4x + 10 +x is correct, but the x's can be combined.

(-4x + x) + 10 = -3x + 10

3 0
3 years ago
In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead. Construct 90% confiden
hram777 [196]

Answer:

(0.4958, 0.7422)

Step-by-step explanation:

Let p be the true proportion of water specimens that contain detectable levels of lead. The point estimate for p is \hat{p}=26/42=0.6190. The estimated standard deviation is given by \sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{(0.6190)(1-0.6190)/42}=0.0749. Because we have a large sample, the 90% confidence interval for p is given by 0.6190\pm z_{0.05}0.0749 where z_{0.05}=1.6448 is the value that satisfies that above this and under the standard normal density there is an area of 0.05. So, the confidence interval is 0.6190\pm (1.6448)(0.0749), i.e., (0.4958, 0.7422).

5 0
3 years ago
A rectangle has vertices at these coordinates.
kompoz [17]
(6,2) is the fourth vertex
8 0
3 years ago
Read 2 more answers
Find measurement of arc JL.
Tresset [83]
4x-2 + 7x-18 + 6x+6 = 360 degrees

combine like terms

17x-14  = 360

add 14 to both sides

17x =374

 divide both sides by 17
x = 374 / 17 = 22

JL = 7x-18
replace x with 22 and calculate
7(22) - 18 = 154 -18 = 136 degrees

4 0
3 years ago
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