Answer:
A
Step-by-step explanation:
I took one for the team
The given equation is:
p(x) = x^2 + ax - b
We write this in terms of y:
y = x^2 + ax – b
To solve for the values of the constants a and b, we are
given the following conditions:
When x = 6, y = -9
When x = 1, y = 16
From these conditions, we can formulate two equation by
substituting the values of y:
-9 = 6^2 + a(6) – b
6a = b – 45 --->
1
16 = 1^2 + a(1) – b
a = b + 15 ---> 2
Combining equations 1 and 2:
6 (b + 15) = b – 45
6b + 90 = b – 45
5b = -135
b = -27
calculating for a using equation 1:
a = b + 15
a = -27 + 15
a = -12
Answers:
a = -12
b = -27
Answer:
A
Step-by-step explanation:
14×x^4×y^6/7×x^8×y^2
2×x^-4×y^4
2×y^4/x^4
2y^4/x^4
Answer:
The 90% confidence interval is 0.575 to 0.625.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval , we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of .
For this problem, we have that:
90% confidence interval
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval is 0.575 to 0.625.
P=2l+2w
120=2(2w)+(2w
120=4w+2w
120=6w
w=20
120=2(20)+2(l)
120=40+2l
80=2l
l=40
Length is 40 and width is 20 feet
hope this helps:)