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2 years ago

7) If 14 out of 24 students in a college class are men, then what percent of the class

Mathematics

2 answers:

sergeinik [125]2 years ago

6 0

Answer:

58%

Step-by-step explanation:

14/24 x 100=58.3333333

katrin [286]2 years ago

3 0

Answer:

it's 58.33 but if we're rounding it's 58.

step by step equation:

we turn 14:24 into the fraction 14/24. then we cross multiply to get the answer.

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The sum of a number z and 4 is less than 12.

Volgvan

Answer:

The answer is A x+4<12

this is due to the fact that if we use key words, sum means addition so the answer is x+4<12

3 0

3 years ago

A researcher wishes to estimate the proportion of X-ray machines that malfunction. A random 275 sample of machines is taken, and

Dominik [7]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

$95\%$ Confidence Interval for both the percentage of all x-ray machines

p = the machinery's share is not working:

$= \frac{228}{275}\\\\ = 0.829$

$\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})$

$= 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045$

Lower $95\%$ Confidence interval = p - error margin $= 0.829 - 0.045 = 0.784$

Upper $95\%$ Confidence Interval = p + error margin $= 0.829 + 0.045 = 0.874$

So, $95\%$ Confidence Interval $= ( 0.78 , 0.87 )$

4 0

2 years ago

Sum 2 5/8 + 4 1/8 = ?

Lostsunrise [7]

Answer:

6 6/8 OR 6 3/4

Step-by-step explanation:

2 5/8 +4 1/8

6 6/8

SImplify= 6 3/4

4 0

3 years ago

Read 2 more answers

In five minutes 25 cars, 8 trucks, 12 vans and 2 motorcycles drove past the house. Which

zheka24 [161]

Answer:

12 vans : 8 trucks

Step-by-step explanation:

12/3=4

8/2=4

therefore this would be your answer.

25/3= 8.33 25/2=12.5

2/3- 0.66 2/2=1

8/3= 2.66

12/2=6

Hope this helps

4 0

3 years ago

What is (2n+2n)-(3n-4n)

Yakvenalex [24]

Answer:

2n^{2} +2n

INSERT

Step-by-step explanation:first you want to move the negative which is negative 1 into the set of parenthesis and then Foil the two parenthesis together and the combine like terms

7 0

3 years ago