STEP 1:
determine equations needed
x= # of $10 tickets
y= # of $14 tickets
QUANTITY EQUATION
x + y= 800
COST EQUATION
$10x + $14y= $9,040
STEP 2:
multiply quantity equation by -14
-14(x + y)= -14(800)
-14x - 14y= -11,200
STEP 3:
add new quantity equation in step 2 to cost equation of step 1 to solve for x using elimination
-14x - 14y= -11,200
10x + 14y= 9040
y term cancels out
-4x= -2160
divide both sides by -4
x= 540 ten dollar tickets
STEP 4:
substitute x value in step 3 into either original equation
x + y= 800
540 + y= 800
subtract 540 from both sides
y= 260 fourteen dollar tickets
ANSWER: There were 540 $10 tickets and 260 $14 tickets sold.
Hope this helps! :)
Answer:
A
Step-by-step explanation:
6 x 6 = 36
10 x 10 = 100
Answer:
B. Negative
Step-by-step explanation:
Line is going downwards
Answer:
7m
Step-by-step explanation:
-9(-5k + 3m) + 9m - 5(-5m + 9k)
Distribute
45k -27m +9m +25m -45k
Combine like terms
45k -45k -27m+9m+25m
0k + 7m
7m
