Answer:
B
Step-by-step explanation:
Variance can be said to be a measure of dispersion for a random sample.
Variance = pq/n
When given the variance, we can find the standard deviation.
Standard deviation = √variance
= √pq/n
Answer:
D. p + q = 7
Step-by-step explanation:
The slope of AB is ...
mAB = (y2 -y1)/(x2 -x1) = (1 -4)/(6 -p) = -3/(6 -p)
The slope of BC is ...
mBC = (q -1)/(9 -6) = (q -1)/3
We want the product of these slopes to be -1:
mAB·mBC = -1 = (-3/(6 -p))·((q -1)/3)
-(q-1)/(6 -p) = -1 . . . . cancel factors of 3
q -1 = 6 -p . . . . . multiply by -(6 -p)
q + p = 7 . . . . . matches choice D
3.5 strip As will fit into Strip b. 2/7 strip Bs will fit into strip A
Answer:
21.
Step-by-step explanation:
f(x) = 2x^2 - 3x + 7.
When x = -2,
f(-2) = 2(-2)^2 - 3(-2) + 7
= 2(4) - (-6) + 7
= 8 + 6 + 7
= 21.
Answer:
y < 6 + 16x
Or
y < 16x + 6
Step-by-step explanation:
The inequality 16x - y > -6 cam be rewritten in the slope-intercept form, y > mx + b as follows:
16x - y - 16x > -6 - 16x (subtraction property)
-y > -6 - 16x
Divide both sides by -1 (the inequality sign will change from > to < because we are dividing by a negative number)
-y/-1 < -6/-1 - 16/-1
y < 6 + 16x
Or
y < 16x + 6
