Answer:
4
Step-by-step explanation:
Step 1:
13 = 2f + 5 Equation
Step 2:
8 = 2f Subtract 5 on both sides
Step 3:
f = 8 ÷ 2 Divide
Answer:
f = 4
Hope This Helps :)
Answer:
7 Glasses
Step-by-step explanation:
One glass of orange juice needs 1/7 of a bag, she brought 7 bags which all adds up to a full 7 glasses
Diameter: The length of the circle
Radius: Half of the diameter
If the diameter of the circle is 14 inches, the radius would be 7 inches as the radius is half the diameter
Answer:
102 gallons of 55% antifreeze
68 gallons of 80% antifreeze
Step-by-step explanation:
55% antifreeze: x
80% antifreeze: y
x + y = 170 ===> -.55(x + y = 170) ===> -.55x - .55y = -93.5
.55x + .80y = .65(170) ===> .55x + .80y = 110.5
________________
add the two equations to eliminate a variable: 0.25y = 17
divide by 0.25 to isolate y: y = 68
substitution to find x:
x + y = 170
x + 68 = 170
x = 102
