To solve this equation , we need to write it in quadratic form
To get the equation in quadratic form we replace x^2 with u
can be written as
, Replace u for x^2
So equation becomes
Now we factor the left hand side
-16 and -1 are the two factors whose product is +16 and sum is -17
(u-16) (u-1) = 0
u -16 = 0 so u=16
u-1 =0 so u=1
WE assume u = x^2, Now we replace u with x^2
Now take square root on both sides , x= +4 and x=-4
Now take square root on both sides , x= +1 and x=-1
So zeros of the function are -4, -1, 1, 4
I think the answer is 15, because 5 divided by 2 is 2.5. 2.5 times 6 is 15
Answer:
-18
Step-by-step explanation:
Answer:
t > 4.5
Step-by-step explanation:
T = 5 - 2t
is the equation for the temperature after midnight.
-4 = 5 - 2t is the point of interest
-9 = -2t
t = 4.5 hrs so 4:30 is the time the temperature reaches -4
t > 4.5 hrs covers all the time that the temperature is less than -4
SAME: Both measure a circle
DIFFERENT: Circumference measures AROUND the circle and the area measures the entire circle.
