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expeople1 [14]
3 years ago
11

You want to solve 11% of what number is 22. Explain how you can solve that by using a proportion

Mathematics
1 answer:
Doss [256]3 years ago
3 0
Write the first ratio as 11/100 and set it equal to 22/n.

since 11 x 2=22 you can multiply 100 x 2 and you'll get 200. 

*Check*: 11% of 200=22
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What number is 15% of 63
Degger [83]
Take the number (63) and then divide it with 100, this gives you 1%. Then you want to multiply with with 15 in order to get 15%. The answer becomes:

\frac{63}{100}\cdot 15=9.45
6 0
3 years ago
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Evaluate the expression b2- 15 if b=9
Rudiy27

Answer:

3

Step-by-step explanation:

just plug in 9 to b

9x2=18 18-15=3

4 0
2 years ago
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How do you solve -24=2r
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The answer is: r = -12
7 0
3 years ago
Please explain each step 5x-7=7x-17
EleoNora [17]
Let's get the same terms on the same side.
I am going to remove 5x from both sides of the equation by subtracting 5x

5x - 5x<span> -7 = 7x -</span>5x<span> - 17</span>
           -7 = 2x - 17   now lets remove the 17 from both sides
       -7 + 17 = 2x     (why do we add 17?  Think of 2x -17 as 2x +  -17.  Tor remove a negative number we add it.
Now we finally have     10=2x and if we divide both sides by 2

<u>10</u><span>  = </span><u>2x</u><u>
</u>2       2    we get that x = 5
<u />Let's check by substituting 5 in the original equation:
5(5) - 7 = 7(5) - 17
25 - 7 = 35 - 17
<span>18      =       18</span>
6 0
3 years ago
Will give brainliest
jeyben [28]

Answer:

<h2> <em><u>384</u></em></h2>

Step-by-step explanation:

<em><u>Given</u></em><em><u>, </u></em>

Dimensions of the rectangular prism = 9ft, 12ft and 4ft

<em><u>Therefore</u></em><em><u>, </u></em>

Surface area of the rectangular prism

= 2( lb + bh + lh)

= 2(12 \times 9 + 9 \times 4 + 12 \times 4) {ft}^{2}

= 2(108 + 36 + 48) {ft}^{2}

= 2 \times 192 {ft}^{2}

= 384 {ft}^{2}

<em><u>Hence</u></em><em><u>,</u></em>

<em><u>Surface</u></em><em><u> </u></em><em><u>area</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>rectangular</u></em><em><u> </u></em><em><u>prism</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>384</u></em><em><u> </u></em><em><u>sq</u></em><em><u>.</u></em><em><u> </u></em><em><u>ft</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>

3 0
3 years ago
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