Answer:
$5 + 4x = 25
Step-by-step explanation:
let x = eraser
4 × x = 4x
$5 + 4x = $25
145/8 is 18.125 so round that up cause it will take more than 18 so the 19th week he will get enough to buy the skateboard.
The answer is: 18° .
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Explanation:
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x + 4x = 90 ; solve for "x"
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5x = 90 ;
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Divide EACH SIDE of the equation by "5"; to isolate "x" on one side of the equation; and to solve for "x" ;
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5x / 5 = 90 / 5 ;
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x = 18 ; The answer is: 18° .
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The mean absolute deviation of a set of data is the average distance between each data value and the mean.
The mean is (20+25+30+30+45)÷5=30
( |20-30|+|25-30|+|30-30|+|30-30|+|45-30| )÷5=6
The mean absolute deviation is 6.
