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ladessa [460]
3 years ago
11

Solve 4/r = 5/20 will mark brainliest ​

Mathematics
2 answers:
vazorg [7]3 years ago
7 0
R=16
how to solve:
cross multiply:))
Svetllana [295]3 years ago
3 0

Answer:

= 16

Step-by-step explanation:

Simplify  \frac{5}{20}

​20

​

​5

​​   to  \frac{1}{4}

​4

​

​1

​​ .

\frac{4}{r}=\frac{1}{4}

​r

​

​4

​​ =

​4

​

​1

​​

2 Multiply both sides by rr.

4=\frac{1}{4}r4=

​4

​

​1

​​ r

3 Simplify  \frac{1}{4}r

​4

​

​1

​​ r  to  \frac{r}{4}

​4

​

​r

​​ .

4=\frac{r}{4}4=

​4

​

​r

​​

4 Multiply both sides by 44.

4\times 4=r4×4=r

5 Simplify  4\times 44×4  to  1616.

16=r16=r

6 Switch sides.

r=16r=16

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If the volume of a cube is 512 how much is the volume if its only 3/4 full
charle [14.2K]

Answer:

384

Step-by-step explanation:

You can find it by dividing 512 to 4 parts

512 divided by 4 = 128

Now multiply 128 by 3 because the cube is 3/4 full

128 * 3 = 384

384 is your answer

7 0
3 years ago
5 (u + 1) -<br>7 = 3<br>3 (u - 1) + 2u​
frez [133]

Correct Question:

5 (u + 1) - 7  = 3 (u - 1) + 2u.

Solve for u

Answer:

See explanation below

Step-by-step explanation:

In this given question, we are required to find u.

Given the equation:

5 (u + 1) - 7 = 3 (u - 1) + 2u​

Required:

Solve for u

To find u, first simplify both sides individually.

Simply 5 (u + 1) - 7:

Expand the parenthesis:

5u + 5 - 7

Collect like terms:

5u - 2

<em>Simplify 3 (u - 1) + 2u​:</em>

Expand the parenthesis:

3u - 3 + 2u

Collect like terms:

3u + 2u - 3

5u - 3

Bring both simplified equations together:

5u - 2 = 5u - 3

5u - 5u - 2 = -3

-2 = -3

Since -2 ≠ -3, there is no solution.

Therefore, we can say the equation is invalid.

3 0
4 years ago
Solve. 15(20−10x)−8x&gt;−6x−16
patriot [66]

Answer: x < 79/38

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the slope of the line that passes through the points (-2,2) and (13, -7).
olga55 [171]

Answer:

tap the link in the comments to get your answer

Step-by-step explanation:

7 0
3 years ago
1/2x + 3 + 3/2x - 4 = x - 1
Afina-wow [57]

Answer:

x=0

Step-by-step explanation:

1/2x+3/2x=4/2x

4/2x=2x

3-4=-1

2x-x=x

-1+-1=0

x=0

5 0
3 years ago
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