Answer:
x-intercepts = -4 and 2
vertex (-1, -9)
Step-by-step explanation:
To find the x-intercepts ie roots
set the equation to 0
(x - 2) (x + 4) = 0
From the zero product rule
x - 2 = 0
x = 2
x + 4 = 0
x = -4
x-intercepts = -4 and 2
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The x coordinate of the vertex is the midpoint of the roots
x = (-4 + 2)/2
x = -1
Plug x = -1 into the function
y = (-1 - 2)(-1 + 4)
y = -3 * 3
y = -9
vertex (-1, -9)
Answer:
d. Twenty-five cars are randomly selected with the new transmission and 25 with the old transmission.
Step-by-step explanation:
A hypothesis test on the difference between the means must satisfy the following conditions
1) the samples must be randomly selected
2) each sample must have a known standard deviation
3) the samples must be independent
4) the samples must be from normal distribution
Hence only part d gives the right answer.
Answer:
911000
Step-by-step explanation:
Answer:
(3,-4)
Step-by-step explanation:
+2 only to x if moving left to right
Answer:
finding the GCF given the other factor
Step-by-step explanation:
This question is more of a personal opinion as it depends on the practice that the individual has to perform each task. In my opinion, I believe finding the GCF given the other factor (meaning both factors) is much easier as you simply need to go through the multiplication table of each of these two factors until you find the first common multiple. Since I have more experience with times tables and know most of them by heart it becomes a lot easier than finding the remaining factor given the GCF.