Answer:
.70
Step-by-step explanation:
5 and up round up so it would round to .7
X= number of adult tickets
y=number of child tickets.
we can suggest this system of equations:
x+y=118 ⇒x=118-y
7.5x+3y=696
we can solve this system of equations by substitution method:
7.5(118-y)+3y=696
885-7.5y+3y=696
-4.5y=-189
y=-189/-4.5
y=42
x=118-y
x=118-42
x=76
Answer: the number of adult tickets sold was 76.
Answer:
y=-2x+1
Step-by-step explanation:
Perpendicular lines have slopes that are negative reciprocals of one another. slope 1/2 perpendicular will be -2/1=-2
y-5=-2(x-(-2))
y-5=-2(x+2)
y-5=-2x-4
y=-2x-4+5
y=-2x+1
Answer:
x = 3
y = 4
Step-by-step explanation:
-4x+2y=-4 -----(eq1)
4x-5y=-8 ------(eq 2)
by elimination,
(eq1) + (eq 2),
(-4x+2y) + (4x-5y) = -4 + (-8)
-4x+2y + 4x-5y = -4 -8
2y-5y = -12
-3y = -12 (divide both sides by -3)
y = -12 / (-3) = 12/3 = 4 (sub back into (eq 1) )
-4x+2y=-4 -----(eq1), when y = 4,
-4x+2(4)=-4
-4x+8 = -4 (subtract 8 from both sides)
-4x= -4 - 8
-4x= -12 (divide both sides by -4)
x = -12 / (-4) = 3
