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Ksju [112]
4 years ago
10

Fred completen 10 math problems This is 40 percent of the number of math problems he has to do How many math problems must he do

Mathematics
2 answers:
ZanzabumX [31]4 years ago
8 0
He got 4 out of the 10 right how you do that you would divide the two numbers together

DerKrebs [107]4 years ago
5 0

Answer:

15 more/ 25 problems in total

Step-by-step explanation:

You might be interested in
find the volume of the prism. it is a bird house in a triangle shape. height 30 ft, length 20 ft. width is 24 ft..
mario62 [17]
V=lwh1/2
V=(24•20•30)1/2
V=17280•1/2
V=8,640

Hope this helps!
7 0
4 years ago
*EASY 7TH GRADE MATH*
lora16 [44]

Answer:

2880

Step-by-step explanation:

The base is made up of two triangles and a square, if that makes sense. Finding the area of a triangle is (base x height)/2.  

The base of the tiny triangle is 4 because there is 8 inches extra to the 10 inch square. <u>10 x 4 = 40.</u>

Now we have a 10 by 10 square: <u>10 x 10 = 100. </u>

So, the area of the trapezoid is 140. There are two trapezoids in this prism, so both bases are 280.

The surface area of the sides are solved by <u>12 x 50 = 600. </u>Together, the sides equal 1200.

The top is solved by <u>10 x 50 = 500.</u>

The bottom is solved by <u>18 x 50 = 900.</u>

Add them all together: 280 + 1200 + 500 + 900 = 2,880

4 0
4 years ago
Susan has a 12-inch board for constructing a wooden chair.The directions say to use a board that is 29 centimeters long.Id her b
Advocard [28]

We have been given that Susan has a 12-inch board for constructing a wooden chair.The directions say to use a board that is 29 centimeters long. We are asked to determine if Susan's board is long enough to cut or not.

We know that 1 inch is equal to 2.54 cm.

Let us convert 12 inches into cm by multiplying 12 by 2.54.

12\text{ inches}=12\times 2.54\text{ cm}

12\text{ inches}=30.48\text{ cm}

Since 12 inches is equal to 30.48 centimeters and 30.48 is greater than 29, therefore, Susan's board in long enough to cut.

6 0
3 years ago
A photograph was enlarged to a width of 15 inches. If the scale factor was 3 /2 , what was the width of the original photograph?
andre [41]
If the width is 15, and the scale factor from width to length is 3:2, then you will have to divide 15 by 3 to get your original width.
15/3 = 5.
5 is your original width.
6 0
3 years ago
Which function is graphed?
Alexandra [31]

Hey there! :)

Answer:

C. {x² + 4, x < 2

    {-x + 4   x ≥ 2

Step-by-step explanation:

This is a piecewise function, where the two equations are different. They are:

y = x²+ 4

y = -x + 4

The function x² + 4 is graphed where x < 2. (< is used because the circle is open)

The function -x + 4 is graphed where x ≥ 2. (≥ is used since the endpoint is closed)

Therefore, the correct answer is:

C. x² + 4, x < 2

   -x + 4   x ≥ 2

5 0
3 years ago
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