(?)(3x — 2)= 24x^2 — 16x
1 answer:
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Answer:
I helped you on three try to do the rest independently because now I stop working.
Step-by-step explanation:
Explanation
,the leading term is the term containing the highest power of x. The coefficient of the leading term is called the leading coefficient.
Step 1
a)
an easy way to tell whether the graph of a quadratic function opens upward or downward: if the leading coefficient is greater than zero, the parabola opens upward, and if the leading coefficient is less than zero, the parabola opens downward.
therefore
Step 2
b)the leading coefficient "a" indicates how "fat" or how "skinny" the parabola will be.
for
hence, more the skinny the graph is, the more closet to zero
therefore,the coefficient closest to 0 is C
Step 3
c)simiary, the graph with the leading coefficient with the grates value will be
graph B
because the coefficient is greater than zero and this graph is the more "fat"
I hope this helps you
Answer:
we will fail to reject the null hypothesis and conclude that there is insufficient evidence to support the claim that the jeep has an incorrect manufacturer's MPG rating
Step-by-step explanation:
We are given;
Population mean; μ = 31.2
Sample mean; x¯ = 31.4
Sample size; n = 230
standard deviation; σ = 2.5
Significance level = 0.05
Let's define the hypotheses;
Null hypothesis; H0: μ = 31.2
Alternative hypothesis; Ha: μ ≠ 31.2
Formula for the test statistic is;
z = (x¯ - μ)/(σ/√n)
z = (31.4 - 31.2)/(2.5/√230)
z = 0.2/0.4564
z = 0.44
From online p-value from z-score calculator attached and using;
z = 0.44; two tailed hypothesis; significance value = 0.05
We have;
P-value = 0.659937
This p-value is greater than the significance value and thus, we will fail to reject the null hypothesis and conclude that there is insufficient evidence to support the claim that the jeep has an incorrect manufacturer's MPG rating
