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3 years ago

5

Of the 800 participants in a marathon, 120 are running to raise money for a cause. How many participants out of 100 are running

for a cause

1 answer:

QveST [7]3 years ago

7 0

Im not sure about this question but- 120% of 800 equals- 15%, so 15% could be the answer

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If 50% is 30 what is 75%

Gemiola [76]

Answer:

$50\% = 30 \\ 70\% = x \\ \\ 50\%x = 30 \times 70\% \\ x = \frac{30 \times 70\%}{50\%} \\ x = 42 \\ hence \: 70\% \: is \: 42$

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3 years ago

If 2x<br> + 13x – 7 = 0, then x could equal to which of the following?

Leokris [45]

Answer:

7 / 15

Step-by-step explanation:

15x - 7 = 0

15x = 7

x = 7/15

7 0

3 years ago

Read 2 more answers

.Simplify by dividing negative five over eight divided by negative three over four..

Mrac [35]

-5/8 divided by -3/4 is the same as -5/8 multiplied by -4/3. Multiply the tops to get 20. Multiply the bottoms to get 24. A negative over a negative is positive and you end up with 20/24! :)

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3 years ago

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The net of a square pyramid is shown:

lys-0071 [83]

1.7625 square inches

3 0

3 years ago

Two jet planes simultaneously started travelling in opposite directions from the same airport. Four hours later they were 3800 m

alexira [117]

Answer:

Step-by-step explanation:

let the speed of one plane=x

speed of other plane=x+80

time=4 hrs

then 4x+4(x+80)=3800

4x+4x+320=3800

8x=3800-320

or 8x=3480

x=435

speed of one plane=435 m/h

speed of other plane=435+80=515 m/h

2.

Let he walks x hrs

then he take a taxi for 2-x hrs

4x+(2-x)50=31

4x+100-50x=31

-46x=-69

$x=\frac{-69}{-46}=\frac{3}{2}$

so he walks 3/2 hrs=1.5 hrs

travels by taxi=2-1.5=0.5 hrs

distance traveled by taxi=0.5×50=25 miles

8 0

3 years ago