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saw5 [17]
2 years ago
8

The ages of five friends are 20,31,28,31 and 25. How many of the friends are older than the average (arithmetic mean) age?

Mathematics
1 answer:
FromTheMoon [43]2 years ago
7 0

Answer:

3 friends

Step-by-step explanation:

The mean age is 27 so 3 friends are above that age.

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bulgar [2K]

Subtract 6 from both sides, you get 1/3x=-14

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6 0
3 years ago
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Look at the picture below for the info
attashe74 [19]

Answer:

x = -3/14

Step-by-step explanation:

1/2(2x-1) = -1/7 -4/7

Combine like terms

1/2(2x-1) = -5/7

Multiply each side by 2

2*1/2(2x-1) = -5/7*2

2x-1 = -10/7

Add 1 to each side

2x-1+1 = -10/7 +1

2x = -10/7 +7/7

2x = -3/7

Divide by 2

2x/2 = -3/7 *1/2

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2 years ago
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EleoNora [17]
We are given with
dimensions of wheelbarrow = 2ft x 3ft x 1.5 ft
dimensions of truck = 11 ft x 8 ft x 6 ft

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70% of this is
528 ft3 (0.7) = 369.6 ft3
Dividing this by the volume of the wheelbarrow
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7 0
3 years ago
THIS IS THE FOURTH TIME I HAVE POSTED THIS QUESTION. I HAVE BEEN STUCK ON THIS SAME QUESTION FOR AN HOUR
ValentinkaMS [17]
So the culture banner size has length x, width x (since it is square)
The sports banner has length x+12, width x.

The area of the sports banner is length x width = x(x+12) = x²+12x.

Now, lets look at the tiles.

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7 0
3 years ago
What is the slope of a line that is perpendicular to the line with equation 12x+3y=9?
Masteriza [31]

Answer:

perpendicular slope= 1/4

Step-by-step explanation:

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6 0
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