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rjkz [21]
3 years ago
5

9 is 12 percent of what number? ( show your work)

Mathematics
1 answer:
Rasek [7]3 years ago
3 0
For this question, we want to find out what 9 / 12 equals as a percent or x / 100. Therefore, we have a proportion here and can say: 9/12 = x/100 Now, at this point, we can cross multiply to get: 900 = 12x Now, divide both sides by 12 to get x alone and find that: x = 75 <==== FINAL ANSWER
so 9 is 12% of 75!
I hope that helps you out! Please let me know if you have any other questions!
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Gerald borrowed $750 at 7% simple interest to be paid back in 2 years. How much interest will he pay?
Lisa [10]

Answer:

$105 interest

Step-by-step explanation:

S.I=\frac{PRT}{100}

S.I= \frac{750*7*2}{100}

Interest = $105

5 0
2 years ago
What is the average rate of change of the function
Reptile [31]

Answer:

Average rate of change =-35.7084

Step-by-step explanation:

Given function is f(x)=480(0.3)^x and we need to find average rate of change of the function from x=1\ to\ x=5.

Average rate of change =\frac{f(b)-f(a)}{b-a}

So,

here\ b=5\ and\ a=1\\f(5)=480(0.3)^5\\=480\times0.00243=1.1664\\and\\f(1)=480(0.3)^1\\=480\times0.3=144

Average rate of change

=\frac{f(b)-f(a)}{b-a}\\\\=\frac{f(5)-f(1)}{5-1}\\\\=\frac{1.1664-144}{5-1}\\\\=\frac{-142.8336}{4}= -35.7084

Hence, average rate of change of the function f(x)=480(0.3)^x over the intervel x=1\ to\ x=5 is =-35.7084.  

5 0
3 years ago
What is the perimeter of rectangle EFGH?
emmasim [6.3K]
We need to identify the perimeter of the rectangle EFGH which has points as below:
G (-3, 4)
H (2, 2)
E (1, -1)
F (-4, 1)
The distance of EF, we have it:
d² = (-4-1) ² + (1--1)² = 25 + 4 = 29
d = √29
The distance from point F to point G: 
d² = (-4--3)² + (1-4)² = 1 + 9
d = √10

Hence, we can solve for the perimeter as below:
Perimeter EFGH = 2L + 2W
Perimeter EFGH = 2(√29) + 2(√10)
Perimeter EFGH = 17.09 units

The answer is the second item in the choices or the letter B which is 2√10 + 2√29 units.
7 0
3 years ago
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Plz help will mark brainliest if correct ​
leva [86]

Answer:I think its A not sure tho-

Step-by-step explanation:

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2 years ago
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