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nadya68 [22]
3 years ago
6

If 1/a + 1/b =1/c and ab=c,what is the average of a and b?

Mathematics
1 answer:
goblinko [34]3 years ago
4 0
If we solve the left side of the given equation,
                                  1/a + 1/b = 1/c
 we get an answer of,
                                    b+a / ab = 1/c
Since ab = c, we can conclude that b + a is 1. The average of these two numbers is equal to there sum divided by 2. The answer is therefore equal to 0.5. 
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Find all x-values for which f ( x ) = 2 for the function below.
Angelina_Jolie [31]

Answer:

<h3>x = -3</h3>

Step-by-step explanation:

First let us get the equation of the coordinates

y-y0 = m(x-x0)

Using the coordinates ( - 3, 2 ), ( - 1, 0 )

m = 0-2/-1-(-3)

m = -2/2

m = -1

Substitute m = -1 and (-1, 0) into the formula

y - 0 = -1(x+1)

y = -x-1

f(x) = -x-1

Since f(x) = 2

2 = -x-1

-x = 2+1

-x = 3

x = -3

Hence the value of x is -3

8 0
2 years ago
The least common factor of 8 and 56, 12 and 30, 16 and 24, and 9 and 15
shepuryov [24]

The lcf of 8 and 56 is 2, the lcf of 12 and 30 is 2, the lcf of 16 and 24 is 2, and the lcf of 9 and 15 is 3.

4 0
3 years ago
Your goal is to save $50. So far, you have saved $34. How much more money do you need to save? Write your answer as a rational n
belka [17]

Answer:

You need to save $16 more dollars.

Step-by-step explanation:

If you add 16 to 34 you get 50.

3 0
3 years ago
Cooper earned $214.50 at his job when he worked for 13 hours. How much money did he earn each hour?
Lerok [7]

Answer:

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Step-by-step explanation:

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2 years ago
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drek231 [11]

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