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VladimirAG [237]
3 years ago
6

What is the percent of 60 is 15

Mathematics
1 answer:
frutty [35]3 years ago
5 0
To find the percent of 15 out of 60, you have to divide fifteen by sixty. 
Then, you multiply your answer by 100. (We do this because 100 percent is a exact amount. 100% of sixty is...well, sixty.)

15 / 60 = 0.25

Now, we can multiply 0.25 by 100:

0.25 * 100 = 25 (basically just moving the decimal two places to the right.)

Next, add a percent sign:

25%, is your answer. 

15 is 25% of 60.
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Which set is closed under subtractionWhich answer choice shows that the set of irrational numbers is not closed under addition
vovikov84 [41]

Answer:

(a) Set of rational numbers

(b) \pi + (-\pi) = 0

Step-by-step explanation:

Solving (a): Set that is closed under subtraction

The solution to this is rational numbers.

For a set of number to be closed under subtraction, the following condition must be true

a -b = c

Where

a, b, c are of the same set.

The above is only true for rational numbers.

e.g.

1 - 2 = -1

5 - 5 = 0

\frac{1}{2} - \frac{1}{4} = \frac{1}{2}

4 - 2 = 2

The operations and the result in the above samples are rational numbers.

Solving (b): Choice not close under addition[See attachment for options]

As stated in (a)

For a set of number to be closed under subtraction, the following condition must be true

a -b = c

Where

a, b, c are of the same set.

In the given options (a) to (d), only

\pi + (-\pi) = 0 is not close under addition because:

\pi is irrational while 0 is rational

<em>In other words, they belong to different set</em>

8 0
2 years ago
PLS HELP PLS I REALLY NEED IT!!
frutty [35]

Answer:

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
For #1 we’re adding/subtracting/multi polynomials I need the answer for #1 its kind of shaded off
lubasha [3.4K]

Answer:

- 6x² - 2x + 1

Step-by-step explanation:

Given

(2x³ - 4x² - 3x + 5) + (- 2x³ - 2x² + x - 4)

Both parenthesis are distributed by 1 thus just remove them

= 2x³ - 4x² - 3x + 5 - 2x³ - 2x² + x - 4  ← collect like terms

= - 6x² - 2x + 1

6 0
3 years ago
Find the vertex of y=-x^2-4x
Kay [80]
The vertex would be (-2,4)
3 0
3 years ago
Which is the measure of angle C ?
zubka84 [21]

Answer:

A

Step-by-step explanation:

if the triangles are similar the ange B and E are the same, A and D are the same and C and F are the same.

B=77 and E=77

F=31 and C=31

A=72 and D=72

8 0
3 years ago
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