Answer:
The expressión is:
10(a+14) = 9a
and the number is:
-140
Step-by-step explanation:
The expression is:
10(a+14) = 9a
then:
10*a + 10*14 = 9a
10a + 140 = 9a
10a - 9a = -140
a = -140
Check:
10(-140+14) = 9*140
10*-126 = 1260
The diameter is 12 cm and the radius is alsays half of the diameter so it will be 6 cm
The percent increase in the price index from 1960 to 1970
is:
% increase in price index = (38.8 – 29.6) * 100% / 29.6
% increase in price index = 31.08%
Therefore the price of a dozen tangerines in 1970 (X) is:
31.08 = (X - $0.31) * 100 / $0.31
<span>X =
$0.41</span>
X+4=2x-19, that's the equation
