Answer: right
Step-by-step explanation:
Answer:
x = 2, -4
Step-by-step explanation:
4x^2 + 8x – 32 = 0
Divide by 4
x^2 + 2x – 8 = 0
Add 8 to each side
x^2 + 2x = 8
Take the coefficient of x
2
Divide by 2
2/2 =1
Square it
1^2=1
Add it to each side
x^2+2x+1 = 8+1
(x+1)^2 = 9
Take the square root of each side
sqrt((x+1)^2) = ±sqrt(9)
x+1 = ±3
Subtract 1 from each side
x = -1±3
x = -1+3, -1-3
x = 2, -4
Answer:
x=-3
Step-by-step explanation:
4/x=8/(x-3)
We can solve this using cross products
4 ( x-3) = 8x
Distribute
4x -12 = 8x
Subtract 4x from each side
4x-4x-12 = 8x-12-4x
-12 =4x
Divide each side by 4
-12/4 = 4x/4
-3 =x
Answer:
Step-by-step explanation:
Answer:
The answer to your question is:
1200 children and 800 adults
Step-by-step explanation:
Data
Children = $ 25 = c
Adults = $ 50 = a
Attendance = 2000
Revenue = $70000
# of children and adults.
c + a = 2000 (I)
25c + 50a = 70000 (II)
Multiply I by -25
-25 c - 25 a = -50000
25c + 50a = 70000
25a = 20000
a = 800
c + 800 = 2000
c = 2000 - 800
c = 1200