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OLEGan [10]
3 years ago
6

Derek is 7 years older than Vivian. In 6 years the sum of their ages will be 75. How old is Derek now?

Mathematics
1 answer:
mylen [45]3 years ago
7 0

Answer:

69 years old ( the answer)

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There are 3.2 million teachers in the United States and 5.66 x 107 students. How many times more students than
Marat540 [252]

Answer:

602.42 million

Step-by-step explanation:

I know the answer is 602.42 million because I used addition and subtraction.

First, I knew there was 5.66x 107 million students. So, I multiplied 5.66 and 107, and I got 605.62 million. I knew there were 3.2 million teachers in the US. Next, I subtracted 3.2 million from 605.62 million.

605.62-3.2=602.42

So, there are 602.42 million more students than teachers in the United States.

3 0
3 years ago
Volume of cylinder with a radius of 8cm and height of 25 cm
Anarel [89]

Answer:

V≈5026.55 cm³ is the exact answer! If you need to use only 3.14 for π then 5024 cm³

Step-by-step explanation:


7 0
3 years ago
3. What % of 100 is 13?
Sedbober [7]

Answer:

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 13 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 13 is 100%, so we can write it down as 13=100%.

4. We know, that x is 100% of the output value, so we can write it down as x=100%.

5. Now we have two simple equations:

1) 13=100%

2) x=100%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

13/x=100%/100%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 100% of 13

13/x=100/100

(13/x)*x=(100/100)*x       - we multiply both sides of the equation by x

13=1*x       - we divide both sides of the equation by (1) to get x

13/1=x

13=x

x=13

now we have:

100% of 13=13

Step-by-step explanation:

Have A Wonderful Day !!

5 0
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Evgen [1.6K]

Answer:

a

Step-by-step explanation:

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3 years ago
HELPPP PLEASEEE ASAPP
garri49 [273]

Answer:

1.7

Step-by-step explanation:

7 0
3 years ago
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