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BabaBlast [244]
3 years ago
15

How can you check to see if two ratios form a proportion? Explain the method you used to find the answer to the previous problem

.
Mathematics
3 answers:
Amanda [17]3 years ago
7 0
A/b=c/d  if a*d=b*c

Ex  2/3=4/6 because 2*6=3*4
Anuta_ua [19.1K]3 years ago
3 0

Answer:

Write a proportion using the ratios. Find the cross products. If the cross products are equal, then the ratios form a proportion.

Lina_smartkid3 years ago
0 0

Write a proportion using the ratios. Find the cross products. If the cross products are equal, then the ratios form a proportion.

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How to calculate rent if it given as %​
stich3 [128]

Answer:

Divide the number by 100 and multiply by the total money given

8 0
3 years ago
Read 2 more answers
I have the area of a circle but how do i find the radius
Tatiana [17]

Answer:

r = √(A/π)

Substitute area into "A", then solve:

Divide A by π, then find the square root of that number.

Explanation:

With the area of a circle, you can find the radius by rearranging its formula.

Area of a circle: A = πr²

<u>Rearrange the formula to isolate "r"</u>.

A = πr²

A/π = πr²/π           Divide both sides by π

A/π = r²                 π divided by π cancels out on the right

√(A/π) = √r²         √ both sides to cancel out ²

√(A/π) = r             Write "r" on the left for standard formatting

r = √(A/π)             Formula for find radius

If you have the area, use this formula.

  1. Substitute "A" with the area.
  2. Divide A by π
  3. Find the square root of that number
7 0
3 years ago
It is a Saturday morning, and Jeremy has discovered he has a leak coming from the water heater in his attic. Since plumbers char
kotegsom [21]

Step-by-step explanation:

You start by asking yourself or as I call it crossmultiply

if 20 min the bucket is 1/8 full what about 8/8 or a whole

<u>2</u><u>0</u><u>×</u><u>8</u><u>/</u><u>8</u><u>×</u><u>1</u><u>/</u><u>8</u>

=160 min or 2.6 hrs

3 0
2 years ago
Read 2 more answers
Solve for z -0.25z= -1.25
GarryVolchara [31]

Answer:

<h2>z = 5</h2>

Step-by-step explanation:

-0.25z= -1.25

Convert the decimals to improper fractions

That's

<h3>- 1.25 =  -  \frac{5}{4}</h3><h3>- 0.25 =  -  \frac{1}{4}</h3>

So we have

<h3>-  \frac{1}{4} z =  -  \frac{5}{4}</h3>

Multiply through by 4

We have

- z = - 5

Divide both sides by - 1

the final answer is

<h3>z = 5</h3>

Hope this helps you

6 0
3 years ago
Read 2 more answers
Solve, using the substitution method.
galben [10]
Y – 3x = 7
y -3x +3x = 7+3x
y = 7+3x

21 + 9x = 3y
21 + 9x = 3(7+3x)
21 + 9x = 21 + 9x

The answer is  B.There are an infinite number of solutions.



6 0
3 years ago
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