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Alex_Xolod [135]
3 years ago
6

The average of two numbers is 15. One of the numbers is 10. What is the other number

Mathematics
2 answers:
nikitadnepr [17]3 years ago
6 0

Answer:

The other number is 20.

Step-by-step explanation:

\frac{10 + x}{2} = 15

<em>Multiply each side by 2.</em>

10 + x = 30

<em>Subtract 10 from each side.</em>

x = 20

There you go!

Troyanec [42]3 years ago
4 0
15 sorry that’s all I know
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Everyone would be confused because they wouldnt know how to add. if there wasnt money then there with be no objects/food/toys/ect. unless its all free. If it all free then everyone would go crazy because they wouldnt have to calculate how much the item cost.
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Can someone please help me!
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Answer:

7)no

Step-by-step explanation:

When you plug in the numbers

3(2)-0=-6

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3 years ago
The ratio of fiction to nonfiction books in the library is 4:5. If there are 900 books in a collection, how many are fiction?
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3 years ago
Please Help ASAP with Math
vampirchik [111]

Answer:

5.33

Step-by-step explanation:

move the 4 out of the summation because  just a constant multiplier

4 *sum from 1 to 10 for (1/4)^(n-1)   [sorry i don't know how to write sums using latex)

The formula for the geometric sum is :

First term*(1-multiplier^n)/(1-multiplier), formally \frac{a_1(1-r^n)}{1-r}

Here multiplier is 1/4

First term is (1/4)^(1-1) = 1

Thus the value of sum is 1*(1-(1/4)^1^0)/(1-1/4)which equals (1- (1/4)^1^0)*4/3

We factored out 4 so its 4*(1-(1/4)^1^0)*4/3 which is 16/3 * (1- (1/4)^1^0)

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5 0
2 years ago
Is the expression below a perfect square trinomial or the difference of two squares?
DanielleElmas [232]

The expression shown below is a difference of two squares.

<h3>Is a given expression a perfect square trinomial or a difference of two squares?</h3>

In this problem we have an algebraic expression that has to be checked by algebraic procedures. The complete procedure is shown below:

(x² + 8 · x + 16) · (x² - 8 · x + 16)                  Given

(x + 4)² · (x - 4)²                                           Perfect square trinomial

[(x + 4) · (x - 4)] · [(x + 4) · (x - 4)]                 Definition of power / Associative and commutative property

(x² - 16)²                                                      Difference of squares / Definition of power / Result

The expression shown below is a difference of two squares.

To learn more on differences of squares: brainly.com/question/11801811

#SPJ1

7 0
1 year ago
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