Answer:
x = 10
y = 70
Step-by-step explanation:
By using the vertical angles theorem we know that x+ y +10 = 90, also simplified to x + y = 80
and 2x + y = 90
By using the substitution method on x + y = 80, it will be y = -x + 80
When you put into the equation 2x + y = 90 you will get 2x -x +80 = 90
Then it will simplify to x = 10
After that plug 10 into x + y = 80 to 10 + y = 80 and get y = 70
Answer:
1, 3
Step-by-step explanation:
1st number = x
2nd number = x+2
x+x+2=6x-2
2x+2=6x-2
4=4x
x=1
so the first number is 1 and the second number is 3.
CHECK: The sum of one and three is four, which is two less than six times one.
The cost for 6 tickets is 40*6/5=48.
Answer:
I think it's 15 because there's 30 blocks and each is 1/2 so you do 30x1/2 to get 15
Y = -16 t^2 + Vo t + Ho
Vo = 60 feet/s
Ho = 75 feet
y = - 16 t^2 + 60 t + 75
The maximum heigth correspond to the vertex of the parabola
You can find it by finding the roots using the quadratic equation (which I let to you) or by finding the highest value using derivatives (which I do next):
y' = -32 t + 60 = 0 => t = 60/32 = 1.875
y = -16 (1.875)^2 + 60 (1.875) + 75 = 131.25 feet.
Answer: 131.25 feet.
