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3 years ago

What is 25.5 as a fraction as well as 20.

Mathematics

2 answers:

motikmotik3 years ago

6 0

53/2 is 25.5 as a fraction; 40/2 is 20 as a fraction

Goshia [24]3 years ago

4 0

Answer: 25.5 = 51/2 = 25 1/2

20 = 20/1

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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

Find the area between the curves x=-2,x=3,y=4x,y=x-5

mixas84 [53]

Those are all lines...

So the x interval is from -2 to 3, because of x=-2 and x=3

The upper line is y(u)=4x and the lower line is y(l)=x-5

So the area between the two lines is:

A=⌠y(u)-y(l) dx

A=⌠4x-x+5 dx

A=⌠3x+5 dx

A=[3x^2/2+5x]

A=[(3x^2+10x)/2], x=[-2,3]

A=(1/2)(27+30-(12-20))

A=(1/2)(57+8)

A=(1/2)(65)

A=32.5 u^2

5 0

3 years ago

Judy uses 9.7 pints of blue paint and white paint to paint her bedroom walls.3/5

Sindrei [870]

Answer:

3.88 Pints

Step-by-step explanation:

First we need to find the amount of blue paint that was used. We can do that by multiplying 9.7 by 0.60 since that is 3/5 in decimal form

$9.7*0.60=5.82$

Now we know how much blue paint was used, now we just need to find how much white paint was used. We can do that by subtracting our amount of blue paint from the total amount of paint used

$9.7-5.82=3.88$

thus, 3.88 is the amount of white paint used

8 0

2 years ago

Spotlight Dance increased the number of dancers on its competition team. Last

Nana76 [90]

Answer:

80%

Step-by-step explanation:

To find percentage increase, we use the following formula:

Percentage Increase = $\frac{New-Old}{Old}*100$

Here

New means the latest value (which is 18 dancers)

Old means the previous value (which is 10 dancers)

The Multiplication by 100 is to convert the decimal answer to percentage.

So, we have:

New = 18

Old = 10

Now we substitute and find:

$\frac{New-Old}{Old}*100\\\frac{18-10}{10}*100\\\frac{8}{10}*100\\80$

So, there was an increase of 80%

3 0

3 years ago

The base of a parallelogram is 10 units and the height is 7units. A segment divides the parallelogram into two identical trapezo

sveticcg [70]

If you need area of the trapezoids:

Area of parallelogram = 10×7 = 70 sq. units

Area of each trapezoid = 1/2 × area of parallelogram = 1/2 × 70 = 35 sq. units

8 0

3 years ago