Of 10 test scores, eight are less than or equal to 82. What is the percentile rank of a test score of 82?
1 answer:
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Answer:
A
Step-by-step explanation:
According to the Factor Theorem, if (<em>x</em> - <em>k</em>) is a factor of a polynomial P(x), then P(k) must equal zero.
We are given that a polynomial function has the zeros 2, √3, and -√3. So, we can let <em>k</em> = 2, √3, -√3.
So, according to the Factor Theorem, P(2), P(√3) and P(-√3) must equal 0.
Testing each choice, we can see that only A is true:
Testing all three values yields that:
Hence, our answer is A.
Answer:
D
Step-by-step explanation:
So we want to find the equation of the line parallel to y=3x+5 and goes through the point (1,4).
First, since the new line is parallel, its slope must be equivalent. Therefore, the slope of our new line <em>must</em> also be 3.
Now, we can figure out the rest of the equation using the point-slope form:
Substitute 3 for m. Let's let (1,4) be x₁ and y₁. Thus:
Distribute the right:
Add 4 to both sides:
And we're done!
The correct answer is D.