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Helen [10]

4 years ago

e questions " alt="Help me please on these questions " align="absmiddle" class="latex-formula">

Mathematics

1 answer:

fomenos4 years ago

5 0

3. yes
4. no
5. no
6. yes
7. yes

do you want 8, 9, 10, and 11 too?

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It takes 40 minutes for 8 people to paint 4 walls.

elena-s [515]

56 minutes for 5 people to paint 10 walls multiply by 5 to get 1 persondivide by 7 to get 7 peopledivide by 10 to get 1 wall multiply by 8 to get 8 walls(56)5*8)/(10*7) minutes for 7 people to paint 8 walls2240/70 = 32 minutes

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3 years ago

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The table gives the average age of airplanes per airline at Camila’s local airport. By what percent is the number of airlines wi

VladimirAG [237]

The percentage that the number of airlines with an average airplane age of 14 is less than the number of airlines with an average airplane age of 11 is:

B. 20%.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

The percentage of airlines with an average age of 14 years is:

$P = \frac{2}{15} \times 100\% = 13.33\%$

The percentage of airlines with an average age of 11 years is:

$P = \frac{5}{15} \times 100\% = 33.33\%$

The difference is:

33.33% - 13.33% = 20%.

Hence option B is correct.

More can be learned about percentages at brainly.com/question/10491646

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2 years ago

Write 5/8 and 9/14 so that they have a comon denominatr

valentina_108 [34]

The denominator is the bottom portion of the fraction. Example 4/6, the 6 is the denominator. The easiest way to start out in finding the common denominator is to see what number, 8 and 14, go into equally. Example: 1/4 and 1/3, 3 and 4 both go into 12. If you multiply 4 by 3 as well as 3 by 4 you get 12 both times. Now try it with 8 and 14.

What number can 8 and 14 go into equally? (56)

8x7=56...14x4=56

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3 years ago

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ira [324]

Is there supposed to be a picture? I can't answer the question.

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3 years ago

a student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?

SIZIF [17.4K]

We'll solve this equation in order to find the score of the 4th test, which we denote with x. $\frac{92+87+78+x}{4}=80$ . Solving it we find that x=63. And it is the final answer for this problem.

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4 years ago