Sophia is saving money for a new bicycle. The bicycle will cost at least $623. Sophia makes $8.22 per hour.
2 answers:
Answer:
C.$ 623
Step-by-step explanation:
We are given that Sophia is saving money for a new bicycle.
The bicycle will cost atleast $623.
Sophia makes $8.22 per hour.
We have to find the inequality that could be used to find the number of hours Sophia needs to work to make enough money to buy a new bicycle.
Let Sophia works h hours to make enough money to buy a new bicycle.
Sophia makes money per hour =$8.22
Total money made by Sophia in h hours =
According to question
$623
Hence, option C is true.
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Hope it helped???????
Hope it helped???????
bolts of length more than , and less than
will be destroyed
= 13.20 cm and 12.80 cm
<u>Step-by-step explanation:</u>
Here we have , A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 2 standard deviations from the mean. The quality-control engineer knows that the bolts coming off the assembly line have mean length of 13 cm with a standard deviation of 0.10 cm. We need to find For what lengths will a bolt be destroyed .Let's find out:
A manufacturer of bolts has a quality control policy that requires it destroy any bolts that are more than 2 standard deviations from the mean.
mean length=
standard deviation=
2 standard deviation from mean=
Therefore, bolts of length more than , and less than
will be destroyed
= 13.20 cm and 12.80 cm