Answer: B Exactly one solution
Step-by-step explanation:
5x+8-7x=-4x+1
-2x+8=-4x+1
-2x+4x=-7
2x=-7
x=-7/2
Answer:
95% confidence interval = ( 28.9485, 40.1515 )
Step-by-step explanation:
sample size( n ) = 52
mean value ( x )= 34.55
std ( б ) = 20.12
H0 : <em>u </em>≤ 30
Ha : u > 30 ( claim )
95% confidence interval for mean SPF level ( df = 51 )
= mean value ±
95% confidence interval = ( 28.9485, 40.1515 )
we cannot reject H0
The answer is 4.125 gallons. Hope this helped ☻
54 divided into 9 tenths. When dividing by decimals, the number becomes greater, because the decimal is less than 1 whole unit. The answer is 60.
Answer:
9(9a-2)
Step-by-step explanation:
81a + (-18)
= 81a - 18
= 9 (9a - 2)