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Tanya [424]
3 years ago
10

George ate 4 slices of pizza. If this was 25% of the slices at the dinner table, how many slices were at the table to start with

?
Mathematics
1 answer:
Rainbow [258]3 years ago
4 0
The equation is-
25% of the total (x) =4
Change 25% to a decimal, 0.25
0.25(x)=4
Divide 0.25 from both sides
0.25x/.25=4/.25
x= 16
Or, you could multiply 4 times 4, since 25% is a quarter.

There were 16 slices at the table.
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Meg has 32 feet of ribbon that she wants to divide into 4/5 of a foot pieces. How many 4/5 of a foot pieces are there in 32 feet
AveGali [126]

32 divided by 4/5=32*5/4/

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there are 40   4/5 foot pieces in 32 feet


3 0
3 years ago
Read 2 more answers
Statements that are true for a cylinder with radius r and height h.
vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling <em>r</em> quadruples the volume.

Doubling <em>h</em> doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

\displaystyle V=\pi r^2h

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2<em>r</em>. Hence, our volume is:

\displaystyle V=\pi (2r)^2h=4\pi r^2h

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2<em>h</em>. Hence, our volume is:

V=\pi r^2(2h)=2\pi r^2h

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2<em>r</em> and doubling the height results in 2<em>h</em>. Hence, the new volume is:

V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0
3 years ago
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iren2701 [21]

Answer:

\begin{bmatrix}x

Step-by-step explanation:

2x -3 < 7 \\ 5 - x \leq  8\\\\\mathrm{Isolate}\:x\:\mathrm{for}\:2x-3

7 0
3 years ago
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Bingel [31]
We\ know:\\\\\cos(90^o-\alpha)=\sin\alpha\\\\\cos37^o=\cos( 90^o-53^o)=\sin53^o
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[21] Please help. What is the volume of the cooler in cubic inches?
GenaCL600 [577]

Answer:

3,724

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19 x 14 x 14

19 x 14 = 266

266 x 14 = 3,742

hope this helped :)

6 0
3 years ago
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