Write the first four terms of the geometric sequence with the given first term, a1, and common ratio, r.a1 = -7; r = 2
A. -7, 14, -28, 56, . . .
B. -7, -5, -3, -1, . . .
C. -7, -14, -28, -56, . . .
D. -14, -28, -56, -112, . . .
Answer: C
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A farmer wishes to work out the average milk yield in his herd that consists of an equal number of Ayrshire, Friesian, Galloway, and Jersey cows.Suppose the farmer selects the first 3 cows of each type that he milks to be in his sample. What type of sampling is being used?
A. capture-recapture B. stratified sampling C. quota sampling D. convenience sampling E. simple random sampling
Solve the equation. Write the answer in a + bi form.x2 + 1 - 
i = 0
A. 6 - 2i, -6 - 2i
B. 
- 
, - 
+ 
C. 
+ 
i, - 
- 
i
D. 
+ 
i, - 
- 
i
Solve the problem.The appliance store where the Scott family shops offers a 7% discount for paying cash. The Scott family received a discount of $50. What was their total bill before the discount?
A. $714.29 B. $7.14 C. $3.50 D. $350.00
The diagram in the figure below shows lines in the same plane. Determine whether the following statement is true or false.
?
The lines a?1 and a?3 are both intersecting and parallel.
?
What will be an ideal response?