Answer:
B. 1 and 10
Step-by-step explanation:
Answer: The answer is D b < 6 or b > −3
:D
Answer:
Jack is 88, Priscilla is 75.
Step-by-step explanation:
Let J represent Jack's age and let P represent Priscilla's age.
Their age totaled 163, so:
And we know that Jack was 13 years older than Priscilla. In other words:
Solve for J and P. To do so, substitute the second equation into the first:
Combine like terms:
Subtract 13 from both sides:
Divide 2 from both sides:
So, Priscilla is 75 years old right now.
Jack is 13 years older meaning that Jack is 88 years right now.
And we're done!
3x + 5y = -9
2x + y = -34
2x + y = -34
y = -2x - 34
3x + 5y = -9
3x + 5(-2x - 34) = -9
3x - 10x - 170 = -9
-7x = -9 + 170
-7x = 161
-7x/-7 = 161/-7
x = - 23
y = -2x - 34
y = -2(23) - 34
y = 46 - 34
y = 12
to check: x = -23 ; y = 12
3x + 5y = -9
3(-23) + 5(12) = -9
-69 + 60 = -9
-9 = -9
2x + y = -34
2(-23) + 12 = -34
-46 + 12 = -34
-34 = -34
The minitab report isn't given.
Answer:
H0 : μ = 2 um
H1 : μ ≠ 2 um
Step-by-step explanation:
The mean surface roughness of coated interior pipe is given as 2um.
This refers to the population mean, μ = 2 um
Therefore, the null hypothesis which usually aligns with the population mean value will be stated as :
H0 : μ = 2 um
The alternative hypothesis is used to test the claim that the mean surface roughness is different from 2 ; hence no direction is given, this is thus a 2 - tailed test
H1 : μ ≠ 2 um