The graphs have the same slope (2) and are parallel
The difference is the y intercept
y = 2x has as y intercept of 0
where y = 2x-7 has a y intercept of -7
Answer:
8
Step-by-step explanation:
20-7=13
13^1.50=8.66666666667
Round up with 8 or 9
Answer:
10:20
Step-by-step explanation:
because 15 is half of 30
and then 10 is half if 20
Answer:
The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers
Step-by-step explanation:
hope it help
Step-by-step explanation:
Given the height of the rocket y in feet related to time after launch x related by the equation:
Y=-16x^2+189x+79
The rocket will hit the ground when y = 0
The equation will become:
0=-16x^2+189x+79
Rearrange
-16x^2+189x+79 = 0
multiply though by minus
16x^2-189x-79 = 0
Factorize and solve for x:
x = 189±√189²-4(16)(-79)/2(16)
x = 189±√35721+5056/32
x = 189±√40777/32
x = 189±201.93/32
x = 189+201.93/32
x = 390.93/32
x = 12.22secs
hence the rocket will hit the ground after 12.22seconds (to the nearest hundredth of a sec)
