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svp [43]
3 years ago
11

How do you work a percentage problem

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0

Answer:

Some percents are easy to figure. Here are a few:

Finding 100% of a number: Remember that 100% means the whole thing, so 100% of any number is simply the number itself:

100% of 5 is 5

100% of 91 is 91

100% of 732 is 732

Finding 50% of a number: Remember that 50% means half, so to find 50% of a number, just divide it by 2:

50% of 20 is 10

50% of 88 is 44

Finding 25% of a number: Remember that 25% equals 1/4, so to find 25% of a number, divide it by 4:

25% of 40 is 10

25% of 88 is 22

Here’s a trick that makes certain tough-looking percent problems so easy that you can do them in your head. Simply move the percent sign from one number to the other and flip the order of the numbers.

Suppose someone wants you to figure out the following:

88% of 50

Finding 88% of anything isn’t an activity that anybody looks forward to. But an easy way of solving the problem is to switch it around:

88% of 50 = 50% of 88

This move is perfectly valid, and it makes the problem a lot easier. As you learned above, 50% of 88 is simply half of 88:

88% of 50 = 50% of 88 = 44

As another example, suppose you want to find

7% of 200

Again, finding 7% is tricky, but finding 200% is simple, so switch the problem around:

7% of 200 = 200% of 7

Above, you learned that to find 200% of any number, you just multiply that number by 2:

7% of 200 = 200% of 7 = 2 7 = 14

Hope this helps you!!

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Answer:

9.7

Step-by-step explanation:

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4 years ago
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Answer:

a=9in

Step-by-step explanation:

Pythagoreans Theorem

a^2+5.6^2=10.6^2

a^2+31.36=112.36

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7 0
3 years ago
A plane is flying at an altitude of 45,000 feet. It begins to drop in altitude 3,000 feet per minute. What is the slope in this
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Step-by-step explanation:

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2 years ago
What is the Measure of ZADB?<br> A<br> (3x + 9)<br> B<br> (2x - 4)^<br> D<br> с
Ede4ka [16]

Answer:

60

Step-by-step explanation:

m(ADB) + m(BDC) = 90°

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5x = 85

5x/5 = 85/5

x = 17

m(ADB) = 3x + 9

3.17 + 9 = 51 + 9 = 60

Hope this helps ^-^

7 0
3 years ago
Read 2 more answers
Find the area of the shaded regions round the hundredth if needed.
inn [45]
1. Find the area of the circle. You know the radius = 10 in. Use
a = \pi {r }^{2}
2. Find the area of the (I'm assuming) equilateral triangle. Use the 30-60-90 rule to determine the length of half one of the edges, since you already know the hypotenuse of the 30-60-90 triangle. Multiply that value by 2 to get the length of one side. Then use
a = \frac{ \sqrt{3} }{4}  {l}^{2}
to find the area, where l = length of one side.

3. Subtract the area of the equilateral triangle from the area of the circle to find the area of the shaded region.

Hope this helps. Let me know if you're confused!
7 0
4 years ago
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