Step-by-step explanation:
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Circumference = pi *d
250 = pi * d
divide each side by pi
250/pi = d
pi is approximately 3.14
250/3.14 = d
79.62 = d
the diameter is approximately 79.62 ft
Answer:
The first one is true, meanwhile the second is false!
Step-by-step explanation:
The first one both simplify to -3.
The second one, -6/-2 ( fraction ) simplifies to positive 3 because dividing or multiplying by 2 negative numbers cancels out the negative sign.
Hope it helps!
Answer:
83
Step-by-step explanation:
x+7+90
x=83
Consider this:
If a test gives a positive result for an infected person 98% of the time, that means that 2% of the time, it gives a negative result for an infected person, which would be a false negative.
Then,
if the test is 97& accurate (not precise) for non-infected people, that means that it gives a negative result 97& of the time. So a positive result will be given 3% of the time for non-infected people, which is considered a false positive.
