-- I've decided to name the unknown number ' Q ', because I can.
-- The product of 25 and the unknown number is 25 Q .
-- The quotient of that product and 45 is 25 Q/45 .
-- We're told that this quotient is -65 .
25 Q / 45 = -65 .
10(2x)+x
21x is the original number
12x is the reversed number
24x is the reversed then doubled number
Set up an equation:
24x=21x+9
3x=9
x=3
The original number is 63 and the reversed number is 36, which then is 72 when doubled.
Answer:
Step-by-step explanation:
Total points needed for two tests to average 90 is 90 x 2 = 180 points.
Subtract the score of the first test from the total points needed:
180 -95 = 85
She needs an 85 on the second test.
Answer:
The percentage error of measurement is 5.63 %
Step-by-step explanation:
Given as :
The measure length of the fence = 150 feet
The actual length of the fence = 142 feet
Let the percentage error in measurement = x
So, x = ×100
Or, x = ×100
or, x = ×100
or, x = 5.63 %
Hence The percentage error of measurement is 5.63 % Answer