Solve for y on one of the questions. I'll do the second one. it will be y=3.25x+0.75. Plug it in for y in the other problem like this: -4.5x-2(3.25x+0.75). Solve. X= 5.5 and Y=18.625
Hello!
10 x 0.5 = 5
That is your answer.
Enjoy.
~Isabella
Answer:
The answer is D
Step-by-step explanation:
Let y = (3-x)/5
Make x the subject:
5y = 3 - x
x = 3 - 5y
f^-1(x) = 3 - 5x
Answer:
CI = x ± 2.58 (s / √n)
Step-by-step explanation:
The confidence interval is the mean plus or minus the margin of error. The margin of error is the critical value times the standard error. For a normal distribution, the critical value is the z-score at the given confidence level. The standard error is the standard deviation divided by the square root of the sample size.
CI = x ± z (s / √n)
At 99% confidence, z = 2.58.
CI = x ± 2.58 (s / √n)
