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alexandr1967 [171]
3 years ago
7

How can I solve 20% of 15? Please help and please explain. I need this now!

Mathematics
2 answers:
nasty-shy [4]3 years ago
8 0
15 times 20 over 100, or 1 fifth. 15 times 1 fifth is 3.
Licemer1 [7]3 years ago
6 0

To solve this, you can use this helpful equation:

\frac{is}{of} = \frac{percent}{100}

Since you now have this equation, you can just plug in.

\frac{x}{15} = \frac{20%}{100}

To find x you would cross multiply, multiply the x with 100 and the 15 with the 20%.

100x = 300

Now to find x you would just divide both sides by 100.

x=3

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6 cups.
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5 0
4 years ago
Answer 7x9-8+11-6[5+2(-3)]
Anna [14]
I got 0.

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5 0
3 years ago
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Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.
Lina20 [59]

Answer:

44

Step-by-step explanation:

Given:

f(x) = 4x^2 - 3

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

f(3) = 4(3)^2 - 3

f(3) = 4(9) - 3

f(3) = 36 - 3

f(3) = 33

To find f(9), replace x with 9 in the given function

f(9) = 4(9)^2 - 3

f(9) = 4(81) - 3

f(9) = 324 - 3

f(9) = 321

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

Where,

a = 3, f(a) = 33

b = 9, f(b) = 321

Plug in the values into the formula for average rate of change.

= \frac{321 - 33}{9 - 3}

= \frac{288}{6}

= 44

Average rate of change = 44

3 0
3 years ago
paris attempted to solve an inequality but made one or more errors. her work and the graph she drew are shown in the photo.What
Romashka [77]

Answer:

One of the errors that I saw was that she multiplied by -5 instead of dividing

Step-by-step explanation

4 0
3 years ago
Y=2x-5, The slope is ............<br>0 0<br>D 2<br>2<br>o -5<br>0 -3​
pogonyaev

Answer: 2

Step-by-step explanation:

The given equation is in slope-intercept form. It is y=mx+b. In this equation, m stands for slope and b stands for y-intercept. Looking back at the equation, we see that in place of m is 2. That tells us that the slope is 2.

5 0
3 years ago
Read 2 more answers
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