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Nina [5.8K]
3 years ago
9

Find the possible value or values of r in the quadratic equation r^2-7r-8=0

Mathematics
1 answer:
tester [92]3 years ago
6 0
I hope this helps you

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The formula for the volume V of a cylinder is V=πr2h, where r is the radius of the base and h is the height of the cylinder. Sel
Alja [10]

Answer:

see explanation

Step-by-step explanation:

Given

V = πr²h ( isolate h by dividing both sides by πr² )

\frac{V}{\pi r^2} = h

When V = 36π , r = 3 , then

h = \frac{36\pi }{\pi (3)^2} = \frac{36\pi }{9\pi } = 4 cm

4 0
3 years ago
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Find the radius of a circle that has a circumference of 1671.
son4ous [18]

Answer:

r=8

Step-by-step explanation:

Given formula:

r = C / 2π

It is given that C = 16π

hence

r = 16π / 2π = 8

8 0
3 years ago
How to round 42.6598 to the barest hundredths place
NeX [460]
To round to the nearest hundredth is 42.66
6 0
3 years ago
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Assume that the Poisson distribution applies and that the mean number of aircraft accidents is 9 per month. Find​ P(0), the prob
Ugo [173]

Answer: 0.0001

It is unlikely to have a month with no aircraft​ accidents .

Step-by-step explanation:

Given :  Mean number of aircraft accidents = 9 per month

The Poisson distribution formula :-

\dfrac{e^{-\lambda}\lambda^x}{x!}, where \lambda is the mean of the distribution.

If X = the number of aircraft accidents per month, then the probability that in a​ month, there will be no aircraft accidents will be :-

\dfrac{e^{-9}(9)^0}{0!}=0.000123409804087\approx0.0001

Hence, the probability that in a​ month, there will be no aircraft accidents = 0.0001

Since this is less than 0.5 , therefor it is unlikely to have a month with no aircraft​ accidents .

5 0
3 years ago
A toy store marks down every toy by 15% in June. How much does a toy cost during June?
iragen [17]

Answer:

since the toy is marked down 15%,

you do p*.85  

to find the remaining cost

Step-by-step explanation:

7 0
4 years ago
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