The answert to the a portion is A: 2,3,5,8
Answer:
129
Step-by-step explanation:
Each day, Monica measures the amount of change in the number of bacteria and this number from each day gives a geometric series
3, -6, 12, -24, ...... having first term 3 and the common ratio -2.
Then the sum of the amount of change in the bacteria after the seventh day will be ( 3 - 6 + 12 - 24 + 48 - 96 + 192) = 129 (Answer)
Answer:
A: 15 + 17h = c B: 4 hours
Step-by-step explanation:
For A you do write the equation by finding your x and your y first
x= $15 fee
y= $17 per hour to clean a house
c= total amount of money charged
For B you can do the problem like this:
You subtract the total amount of money which is $83 by the fixed fee of $15* and then divide your total which is $68 by the amount of money charged per hour which is $17 and you get your answer which is 4 hours.
You can also do your problem like this:
You subtract $83 - $15 to get $68
Then you can multiply $17 per hour by the number of hours that add up to $68 to get your answer.
(No matter what you have to subtract the $83 by the $15)*
Hope that helps you out alot!!!!!
Answer:
(a) t = 1.6766
Step-by-step explanation:
n = 50
degree of freedom = n - 1 = 50 - 1 = 49
confidence level = 90%
The critical value corresponding to 90% confidence level and 49 degrees of freedom is obtained by interpolating between 48 and 50 degrees of freedom (df)
Let the critical value at 49 df be y
dof. critical value
48. 1.677
49. y
50. 1.676
(49 - 48)/(50 - 48) = (y - 1.677)/(1.676 - 1.677)
0.5 × -1×10^-3 = y - 1.677
y - 1.677 = -5×10^-4
y = -5×10^-4 + 1.677 = 1.6765
The closest option is (a)