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Contact [7]
3 years ago
9

      please help me write an algebraic expression equation.   then solve these percent problems.

Mathematics
1 answer:
Lena [83]3 years ago
7 0
p\%=\frac{p}{100}\\\\100\%-25\%=75\%=\frac{75}{100}=0.75\\\\0.75\times\$150=\$112.50\leftarrow answer\\=======================================\\100\%+7\%=107\%=\frac{107}{100}=1.07\\\\1.07\times3\times\$14.99\approx\$48.12\leftarrow answer

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6. Rectangle GHIJ is enlarged to form
Iteru [2.4K]

Answer:

Scale Factor=2

Step-by-step explanation:

As the rectangle is enlarging from GHIJ to KLMN

then

Sacle Factor = Larger length / Smaller Length

Scale Factor = 5 cm / 2 cm = 2

Scale Factor = 20 cm / 10 cm = 2

4 0
3 years ago
What is the volume of a volleyball with a diameter of 8 inches
natita [175]

Hello there!

We are going to follow the volume of a sphere since a volleyball is a sphere. V=4/3πr^3 is the formula for finding the volume of a sphere. The only unknown value is r, or the radius. We find the radius by halving the diameter.

8/2 = 4, so we have a radius of 4 inches.

Place the value of 4 in for r - V = 4/3 x π x (4)^3

Now solve.

V = 4/3 x π x (4)^3

Start by squaring 4.

V = 4/3 x π x 64

Next, multiply 4/3 by 64. (<em>you can do it in any order since there are no parenthesis</em>)

V = π x 85.33

Lastly, multiply 85.33 by pi.

V = 268.08

So, your answer is approximately 268.08, since we used rounding it is not exact. I hope this was helpful and have a great rest of your day! :)

8 0
4 years ago
a bag of popcorn contains 483 calories and serves 3.5 people. How many calories are there per serving
mote1985 [20]

Answer: 138 calories.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help! It’ll give you 43 points!
Nesterboy [21]

Answer:

5

Step-by-step explanation:

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3 0
3 years ago
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What is the difference ? X/x^2-2x-15-4/x^2+2x-35
lara31 [8.8K]

 x / x² - 2x - 15 - 4 / x² + 2x - 35


FIND THE FACTOR OF EACH DENOMINATOR


= x / (x-5)(x+3) 

-  4 / (x-5) (x+7)


FIND THE LCD AND MULTIPLY EACH TERM TO ARRIVE AT THE SAME DENOMINATOR.


= x / (x-5)(x+3)  *

(x+7) / (x+7)   -    4 / (x-5) (x+7)  * (x+3)/(x+3)


PERFORM SUBTRACTION


= x2 + 7x / (x-5) (x+3) (x+7)  - (4x + 12) / (x-5) (x+7) (x+3)


= x2 + 7x – 4x – 12 / (x-5) (x+3) (x+7)


this would be your answer = x² + 3x – 12 / (x-5) (x+3) (x+7)


7 0
4 years ago
Read 2 more answers
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