Answer:
I cant even see anything can you reupload your answer, please?
Step-by-step explanation:
Answer:
The square root of a monomial is equal to the square root of the numerical coefficient, multiplied by the literal factors, with the exponent of each literal factor divided by 2, and the sign of the answer is + or -.
Step-by-step explanation:
have a great day! Also may I sugest watching a kahn academy videos they are very helpful :)
You know if something is a function or not because of the X will not be repeated. If it is, then it's not a function.
A. 0 and 2 are repeated in X
B. Nothing is repeated for X
C. 2 and 3 are repeated for X
D. 2 and 3 are repeated for X
B is your answer
Answer:
10 + 5xy = -80
Step-by-step explanation:
10 + 5xy = ?
x = 9 and y = -2
10 + 5xy = 10 + 5(9)(-2)
= 10 - 90
= -80
Answer:
Step-by-step explanation:
We want to determine a 95% confidence interval for the mean salary of all graduates from the English department.
Number of sample, n = 400
Mean, u = $25,000
Standard deviation, s = $2,500
For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean ± z × standard deviation/√n
It becomes
25000 ± 1.96 × 2500/√400
= 25000 ± 1.96 × 125
= 25000 ± 245
The lower end of the confidence interval is 25000 - 245 =24755
The upper end of the confidence interval is 25000 + 245 = 25245
Therefore, with 95% confidence interval, the mean salary of all graduates from the English department is between $24755 and $25245
