Multiply to dun the area of a triangle
Answer: -13x -3y + 12z
Step-by-step explanation:
7.5a+3c=663
a+c=113
Write a literal equation for c using the second equation.
c=-a+113
Substitute the value of c into the first equation
7.5a+3(-a+113)= 663
7.5a-3a+339=663
4.5a+339=663
4.5a=324
a=72
Final answer: 72 adult tickets sold
Check by finding the value of c and plugging both values in
(72)+c=113
c=41
7.5(72)+3(41)
663
True
Answer:
Answer:
x =11
Step-by-step explanation:
6x +1 + 5x -17 + 9x - 24 = 180
x =11
p= 7x
a= -12x
t=-15x
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