Answer:
A
Step-by-step explanation:
Let's see...
It's a cube, so the total volume will be one length cubed or 10^3 which is 1000.
(2500 g)/(1000 cm^3) = 
Answer:
g(6)= -13
Step-by-step explanation:
g(6)=−1−77
Step 1: Simplify both sides of the equation.
g(6)=−1−77
6g=−1+−77
6g=(−1+−77) (Combine Like Terms)
6g=−78
6g=−78
Step 2: Divide both sides by 6.
6g/6 = −78/6
g=−13
The correct answer would be the second choice.
R = V/I
Easy way, visual
50---68---80%
Difference 18 12
Invert order to give ratio of 50% and 80%
Ratio 12 18 = 2:3
So by simple proportion:
volume of 50% needed = 100*2/(2+3)=40 mL
volume of 80% needed = 100*3/(2+3)=60 mL
Algebra way
Let x=volume of 50% needed.
Then
0.50*x+0.80*(100-x) = 0.68(100)
Expand and solve for x
0.5x+80-0.8x = 68
0.8x-0.5x = 80-68
0.3x = 12
x=12/0.3 = 40 mL (volume of 50%)
100-x=100-40=60 mL (volume of 80%)
