Answer:
x = 2
y = -3
Step-by-step explanation:
Solve by substitution:
2x - y = 7
Move the 2x to the other side: -y = 7 - 2x
Divide by -1: y = -7 + 2x
Take the other equation: 3x + y = 3
Substitute y in: 3x + (-7 + 2x) = 3
Take out the parenthesis: 3x - 7 + 2x = 3
Move -7 to the other side: 3x + 2x = 3 + 7
Simplify: 5x = 10
x = 2
Take the first equation: 2x - y = 7
Substitute x back in: 2(2) - y = 7
Simplify: 4 - y = 7
-y = 3
y = -3
Answer:
-25.17 miles per gallon.
-It costs $49.02 to fill your tank.
Step-by-step explanation:
-To find the miles per gallon, you can use a rule of three:
17.2 gallons → 433 miles
1 gallon → x
x=(1*433)/17.2= 25.17
If your gas tank holds 17.2 gallons, you car can drive 25.17 miles per gallon.
-To find the cost to fill your tank, you have to multiply the price per gallon for the amount of gallons that the tank can hold:
$2.85*17.2=$49.02
It costs $49.02 to fill your tank.
Answer:
%52
Step-by-step explanation:
13/25 0.52 move decimal two places to left and add percent %52
Answer:
8 arrangement
Step-by-step explanation:
2 white balloons and 3 red balloons for every arrangement
This is a great question for a calculator
But anyway all you have to do is divide 3,591 by 57 to find your answer which the answer is 63 bottle caps per day
