Answer:
Your answer would be A. f(-2) = -10.
Step-by-step explanation:
f(-2) = 3(-2) - 4
f(-2) = -6 - 4
f(-2) = -10
Hope this is helpful.
Answer:
E. The sample size is the same for X and Y, and the confidence level used for the interval constructed from X is greater than the confidence level used for the interval constructed from Y
Step-by-step explanation:
Confidence interval formula is given as
CI = \bar{x} \pm z*(\sigma/\sqrt{n})
Here, we can see that the width of confidence interval is z*(\sigma/\sqrt{n}) , which is dependent only on z critical value, standard deviation (sigma) and sample size (n)
This simply entails that either z or n or both are greater for x as compared to y.
Option E is correct answer because x and y can have sample sizes, but if the z critical is greater for x, then the width will be larger.
Answer:
x=2 and -2
Step-by-step explanation:
f(x)=2x^2-8
set the function equal to zero to solve for x
2x^2-8=0
add 8 to both sides and divide by 2
x^2=4
take the square root of both sides to get x isolated
√(x^2)=√4
x= ±2
The area of triangle ABC with vertices is 22 square units
<h3>How to find the area of ABC with
vertices?</h3>
The vertices are given as:
A(4, -3) B(9,-3) , and C(10, −11)
The area of the triangle is calculated using
Area = 0.5 * |Ax(By - Cy) + Bx(Ay - Cy) + Cx(Ay - By)|
This gives
Area = 0.5 * |4 * (-3 + 11) + 9 * (-3 + 11) + 10 * (-3 - 3)|
Evaluate the sum of products
Area = 0.5 * |44|
Remove the absolute bracket
Area = 0.5 * 44
Evaluate
Area = 22
Hence, the area of ABC with vertices is 22 square units
Read more about areas at:
brainly.com/question/22972014
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