State whether the sample is biased or unbiased. If unbiased, classify the sample as simple, stratified, or systematic. If biased, classify the sample as convenience or voluntary,
A manufacturer wants to check the quality of its light bulbs. Every 5 minutes, a light bulb is removed from the assembly line
and tested.
a. biased; convenience
C. unbiased; systematic
b. biased; voluntary
d. unbiased; stratified
Please select the best answer from the choices provided
A
B
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answer: 91

step-by-step explanation:

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours