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murzikaleks [220]
3 years ago
5

How to solve this problem?

Mathematics
1 answer:
Mrrafil [7]3 years ago
4 0

10.9297 anxdjehsimdudneueneieo

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Coach Hutchison is the basketball coach at school . she asks players to record their heights. The histogram shows the data she h
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The unit of measure used in the study is "inches"

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2 years ago
Expand and simplify<br> (3y - 2)(y + 3)
Vedmedyk [2.9K]

Step-by-step explanation:

3y^2 + 7y - 6

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3 years ago
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Suppose the lifetime of a cell phone battery is normally distributed with a mean of 36 months and a standard deviation of 2 mont
solong [7]

Answer:

They should guarantee the lifetime of their batteries for 32 months.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 36 months and a standard deviation of 2 months.

This means that \mu = 36, \sigma = 2

If the company wants to replace no more than 2% of all batteries, for how many months should they guarantee the lifetime of their batteries?

The guarantee should be the 2th percentile of lengths, which is X when Z has a pvalue of 0.02. So X when Z = -2.054.

Z = \frac{X - \mu}{\sigma}

-2.054 = \frac{X - 36}{2}

X - 36 = -2.054*2

X = 31.89

Rounding to the closest month, 32.

They should guarantee the lifetime of their batteries for 32 months.

3 0
2 years ago
1. 12x^2 +2xy
brilliants [131]

Answer:

1. 12x^2 +2xy

Step-by-step explanation:

1. 12x^2 +2xy

2. 21ab^2 +35ab

3. w^2+15w+ 14

4. m^2-12m+20

5. 2k^2+5k-3

6. -r^2-5r-6

7. 8y^2+26y+15

8. -2d^2-7d-5

9. (h+6)(h-4)=0

10. s^2-7s+12=0

11. -2d^2-7d-5

4 0
3 years ago
A cylinder's volume can be calculated by the formula V=Bh, where V stands for volume, B stands for base area, and h stands for h
Anastaziya [24]

Answer:

h = 3x^5-3x^2-10\text{ units}

Step-by-step explanation:

We are given the following in the question:

Volume of cylinder =

V=Bh

where B is the area of base and h is the height of cylinder.

Volume of cylinder =

V = 6\pi x^7-6\pi x^4-20\pi x^2

Base area =

B = 2\pi x^2

We have to find height of cylinder.

h = \dfrac{V}{B}\\\\h = \dfrac{6\pi x^7-6\pi x^4-20\pi x^2}{2\pi x^2}\\\\h = 3x^5-3x^2-10\text{ units}

Thus, the height of cylinder is 3x^5-3x^2-10 units.

6 0
3 years ago
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