Increase per hour=increase/hours
increase=temp(final)-temp(initial)
hours=9am to 3pm
given
temp(initial)=-8
temp(final)=10
increase=10-(-8)
increase=10+8
increase=18
how many hours elapsed
9 to 12 is 3 hours
12 to 3 is 3
3+3=6
6 hours elapsed
increase per hour=18/6=3f/h
oh, you want the equation
[10-(-8)]/6 is the equation
the first one
Answer:
(2x-3) (2x+3)
zeros, x intercepts: -3/2, 3/2
Step-by-step explanation:
4x^2 -9
We know the difference of squares is a^2 -b^2
This factors into (a-b) (a+b)
Let 4x^2 =a^2
Taking the square root
2x =a
Let b^2 =9
Taking the square root
b= 3
(4x^2-9 ) = (2x-3) (2x+3)
To find the zeros, we set the equation equal to zero
(4x^2-9 ) = (2x-3) (2x+3) =0
Using the zero product property
2x-3 =0 and 2x+3 =0
2x-3+3 = 0+3 2x+3-3 = 0-3
2x=3 2x=-3
Divide by 2
2x/2 = 3/2 2x/2 = -3/2
x = 3/2 x = -3/2
These are the zeros of the equation (which are also the x intercepts)
Step-by-step explanation:
344m/s
344 x10 -3)x3600
1238.4km/hr
i hope my answer will help u
Answer: -9
Step-by-step explanation: