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kirill115 [55]
3 years ago
10

60% of what number is 15

Mathematics
2 answers:
Genrish500 [490]3 years ago
8 0

Answer: 25

Step-by-step explanation: Reading through the problem, we have 60% which can be written as the fraction 60/100, "of" means multiply, "what number" which we can call X, "is 15" equals 15.

(\frac{60}{100}) (X) = 15

If we simplify on the left side of the equation, we can reduce 60/100 to 3/5 so we now have as followed.

\frac{3}{5}x = 15

We can multiply both sides of the equation by 5 to get rid of the fraction and we have 3x = 75.

3x = 75

÷3    ÷3   ← divide both sides by 3

X = 25

Therefore, 60%of 25 is 15.

Image provided.

Veronika [31]3 years ago
7 0
Hi there!

15 × 100 ÷ 60 = 25

So, 60% of 25 is 15.

Hope this helps!
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Find the range of each function for the domain {-4, -2, 0, 1.5, 4}. f(x) = 5x^2 + 4
andrew11 [14]
Substitute x with the members of the domain.
f(x) = 5x² + 4

Substitute with the domain of -4
f(x) = 5x² + 4
f(-4) = 5(-4)² + 4
f(-4) = 5(16) + 4
f(-4) = 80 + 4
f(-4) = 84

Substitute with the domain of -2
f(x) = 5x² + 4
f(-2) = 5(-2)² + 4
f(-2) = 5(4) + 4
f(-2) = 20 + 4
f(-2) = 24

Substitute with the domain of 0
f(x) = 5x² + 4
f(0) = 5(0)² + 4
f(0) = 5(0) + 4
f(0) = 0 + 4
f(0) = 4

Substitute with the domain of 1.5
f(x) = 5x² + 4
f(1.5) = 5(1.5)² + 4
f(1.5) = 5(2.25) + 4
f(1.5) = 11.25 + 4
f(1.5) = 15.25

Substitute with the domain of 4
f(x) = 5x² + 4
f(4) = 5(4)² + 4
f(4) = 5(16) + 4
f(4) = 80 + 4
f(4) = 84

The range of the function for those domain is {4, 24, 15.25, 84}
4 0
3 years ago
Plz help me thank you
MA_775_DIABLO [31]

Answer:

2 cups:16 fluid ounces

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12 pints: 24 cups

4 quarts: 1 gallon

8 0
3 years ago
Read 2 more answers
36 is 0.9% of what number w?
irina [24]

Answer:

The number w is 4,000

Step-by-step explanation:

Let

w ------> the number

we know that

36 is 0.9% of number w

w represent the 100%

so

using proportion

Find out the number w

\frac{w}{100\%}=\frac{36}{0.9\%}\\\\w=100*36/0.9\\\\w=4,000

therefore

The number w is 4,000

6 0
4 years ago
Read 2 more answers
Can someone please explain how to do this.
Cerrena [4.2K]

Well you can graph it by  plotting 3 points then drawing a line through these 3 points. The graph will be a straight line . By plotting 3 points  you can be more sure if you are right, because if you make a mistake then they might not make a straight line.

Put y = 0 in the equation  and find the  x coordinate:-

x + 5(0) = -20

x = -20

So we have one point to plot:-   (-20,0)

Putting x = 0 we get  5y = -20 so y = -4

Second point:- (0, -4)

Putting x = 5 say   we get  4 + 5y = -20  so y =  -25/5 = -5

so our 3rd point is (5, -5)

7 0
4 years ago
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If we set alpha at 0.05 instead of 0.01, other factors held constant _________. greater risk of a Type I error and a lower risk
Alik [6]

Answer:

<u>greater risk of a Type I error and a lower risk of a Type II error </u>

Step-by-step explanation:

<em>Remember</em>, in statistics, alpha (or the significance level) α,  refers to the probability of rejecting the null hypothesis when it is true.

Hence, setting alpha at 0.05 (or 5%) instead of 0.01 (or 1%) implies that the researcher is increasing how far away the statistics data needs to be from the null hypothesis value before they can decide to reject the null hypothesis. In other words, a probability of 5% is greater than 1%, resulting in a greater risk of a Type I error and a lower risk of a Type II error.

3 0
3 years ago
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