Answer:
y = 3 and x = 2
Step-by-step explanation:
subtract the 2nd eqn from the first...
-4y = -12
y = 3
substitute the value of y into either of the eqns...
2x - 3(3) = -5
2x = 4
x = 2
Just add 1 5/8 (wheel weights). your answer is J
Answer:
3 sets of 3 students can be chosen to g on the field trip.
Step-by-step explanation:
#1
Lets x = number of adult tickets
Lets y = number of children tickets
equation 1: 8x + 4y = 5040
equation 2: x + y = 680
solve them by using substitution
x + y = 680
x = 680 - y
substitute x = 680 - y into 8x + 4y = 5040
8(680 - y) + 4y = 5040
5440 - 8y + 4y = 5040
-4y = 5040 - 5440
-4y = -400
y = 100
x = 680 - y
x = 680 - 100
x = 580
Answer:
There were 580 adults and 100 children at the last Miller's home basketball game.
#2
Similar to the #1
Lets x is the number of people riding school bus
Lets y is the number of people riding luxury charter bus
equation 1: x + y = 65
equation 2: 8x + 15y = 611