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3 years ago

What is the square root of 80 simplified?

Mathematics

1 answer:

lys-0071 [83]3 years ago

5 0

See the attachment for the work.

Sqrt(80) = 4*sqrt(5)

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What are the simplified version of these?

Helga [31]

-2y-(-8y-2) = -2y + 8y + 2 = 6y + 2

2(3x + 16) - 7x = 6x + 32 - 7x = -1x + 32 = 32 - x

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3 years ago

Which inequality represents the sentence?

svp [43]

Answer:

The difference of seven and two tenths and a number is more than twenty nine.

7.2 -n >29

Choice A

Step-by-step explanation:

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3 years ago

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3 years ago

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If f(3)=5 and f(4)=8 find f(7) and f(8)

s344n2d4d5 [400]

F(3) = 5 [5-3=2 diff]
f(4) = 8 [8-4=4 diff] (or 2 times larger than f(3)’s diff)

If that holds true, then continue the pattern:

f(5) = 13 [2 times f(4) diff = 8 so 5 + 8 = 13]
f(6) = 22
f(7) = 39
f(8) = 72

The only problem with my answer is that it could be times 2 or ^2. My answer above assumes times 2.

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3 years ago

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A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and

vredina [299]

Answer:

2.35%

Step-by-step explanation:

Mean number of months (M) = 39 months

Standard deviation (S) = 10 months

According to the 68-95-99.7 rule, 95% of the data is comprised within two standard deviations of the mean (39-20 to 39+20 months), while 99.7% of the data is comprised within two standard deviations of the mean (39-30 to 39+30 months).

Therefore, the percentage of cars still in service from 59 to 69 months is:

$P_{59\ to\ 69}=\frac{P_{9\ to\ 69}-P_{19\ to\ 59}}{2} \\P_{59\ to\ 69}=\frac{99.7-95}{2}\\P_{59\ to\ 69}=2.35\%$

The approximate percentage of cars that remain in service between 59 and 69 months is 2.35%.

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3 years ago