The management of Watchdog Security Systems has calculated the following variances: Direct materials cost variance
$11,000 U
Direct materials efficiency variance
35,000 F
Direct labor cost variance
16,000 F
Direct labor efficiency variance
12,000 U
Total variable overhead variance
7,000 F
Total fixed overhead variance
3,500 F
What is the total direct labor variance of the company?
O A. $4,000 F
OB. $10.500 F
O C. $16,000 F
OD. $28,000 F

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

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a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.