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3 years ago

5

In a school gym the ratio of the number of boys to the number of girls were 4:3. After 160 days boys left the gym, the ratio bec

ame 4:5. How many girls were there in the gym?

2 answers:

uysha [10]3 years ago

7 0

The Answer is 300 girls.

Allisa [31]3 years ago

4 0

<span>11/29/2017QQuiz 2: Supporting Speeches11/29/2017</span><span>QQuiz 2: Supporting Speeches11/29/2017</span><span>QQuiz 2: Supporting Speeches</span>

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There is a bag with only red marbles and blue marbles.The probability of randomly choosing a red marble is59.There are 63 marble

Elis [28]

Answer:

37

Step-by-step explanation:

59 percent times 63 in total marbles is 37

7 0

2 years ago

Need help with a simple problem 2^x=3^x+1

KiRa [710]

For $x\ \textgreater \ 0$ , $2^x\ \textless \ 3^x$ , all the more $2^x\ \textless \ 3^x+1$ , therefore no solution.

For $x=0$ , we have $2^0=3^0+1 \Rightarrow 1=1+1 \Rightarrow 1=2$ . Obviously that' false.

For $x\ \textless \ 0$ both $2^x$ and $3^x$ , where $2^x\ \textgreater \ 3^x$ , belong to the range $(0,1)$ , then $3^x+1$ belong to the range $(1,2)$ .
Those ranges don't have a common part, therefore, again, no solution.

So, the equation $2^x=3^x+1$ doesn't have a solution.

4 0

3 years ago

1. 15 is what percent of 40?<br> 2. 15 is 30% of what number?<br> 3. What number is 120% of 70?

Elis [28]

<span>1. 15 is what percent of 40?
15 * 100 / 40 = 37.5
answer is </span><span>15 is 37.5% of 40
</span><span>
2. 15 is 30% of what number?
15 / 0.3 = 50
answer : </span>15 is 30% of 50<span>

3. What number is 120% of 70?
120% = 1.2
1.2 + 1 = 2.2

2.2 * 70 = 154
answer: 154</span> is 120% of 70?<span>

</span>

5 0

2 years ago

The speed limit is 65 miles per hour. How long will it take Johnny to travel 715 miles?

SOVA2 [1]

Answer:

11 mph

Step-by-step explanation:

175 ÷ 65 = 11

The answer is 11 mph.

7 0

2 years ago

A box has a length of 4 inches and a width of 8 inches. If the volume is 192 cubic inches, what is the height of the box?

melamori03 [73]

C) 6 inches

4•8=32
192/32 = 6

8 0

3 years ago