-5i/2i. is the answer because all you have to do is add the -5 and the i.
Do you mean 5+7?
If so, that equals 12!
Answer:
(53.3; 56.1)
Step-by-step explanation:
Given that:
Sample size, n = 41
Mean, xbar = 54.7
Standard deviation, s = 5.3
Confidence level, Zcritical at 90% = 1.645
Confidence interval :
Xbar ± Margin of error
Margin of Error = Zcritical * s/sqrt(n)
Margin of Error = 1.645 * 5.3/sqrt(41)
Margin of Error = 1.362
Lower boundary = 54.7 - 1.362 = 53.338
Upper boundary = 54.7 + 1.362 = 56.062
(53.3 ; 56.1)
Step-by-step explanation:
13x+7y-2x+6a
combine like terms
=13x-2x+7y+6a
=11x+7y+6a
simplified
Answer:
Step-by-step explanation:
In costing analysis, direct materials, labour and direct expenses aggregate to prime cost. Alternately, the aggregate of indirect materials, labour and expenses is termed as overhead. Overheads are classified into fixed and variable.
Variable overhead is one which varies directly as per number of units produced
Variable overhead rate variance = actual costs -(AHxSR)
= Actual costs - (Actual hours x std rate)
= Actual hours x actual rate - actual hours x std rate
Hence option D is right.
