Answer:
42 gallons 45% antifreeze
28 gallons 95% antifreeze
Step-by-step explanation:
If x is volume of 45% antifreeze, and y is volume of 95% antifreeze, then the total volume is:
x + y = 70
And the total amount of antifreeze is:
0.45 x + 0.95 y = 0.65 (70)
Solving by substitution:
0.45 x + 0.95 (70 − x) = 0.65 (70)
0.45 x + 66.5 − 0.95 x = 45.5
21 = 0.5 x
x = 42
y = 28
The area of a triangle is A= 1/2bh. Plugging in the values you know, 30= 1/2*12*h.
Solving for h,
30= 1/2*12*h
30= 6h
h=5
The height of the triangle is 5 units.
Answer:
24
Step-by-step explanation:
You just do 6 / 1/4 = 24
Answer:
1. 50
2. 16.6666666667=16.7
3. 5.55555555556=5.6
Step-by-step explanation:
1. 5/0.1=50
2. 5/0.3=16.6666666667=16.7
3. 5/0.9=5.55555555556=5.6