Answer:
First map, 1cm:10km
Distance between cleveland and cincinnati :
Second map, 1cm: 50km
Therefore, the distance between the two places in second map will be 8 cm.
I- please ask a question. This is not a question
Answer:
-28
Step-by-step explanation:
-24 + (-4) =
a negative plus a negative is a negative.
if you owe me 24 dollars and then I loan you another 4 dollars then you are in the negative 28 dollars to me.
Both 'w' have same exponent, making them like terms
x = liters of 40% solution
y = liters of 70% solution
Gabe needs 30 liters, so
x + y = 30
Each liter of 40% solution contributes 0.4x liter of acid; each liter of 70% solution contributes 0.7y liter of acid. Gabe needs a solution with concentration 60%, which from 30 liters amounts to a net volume of 0.6*30 = 18 liters of acid. So
0.4x + 0.7y = 18
Solve the system however you like. By substitution, we have
y = 30 - x
0.4x + 0.7(30 - x) = 18
0.4x + 21 - 0.7x = 18
3 = 0.3x
==> x = 10 ==> y = 20