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ASHA 777 [7]
3 years ago
6

I need help with INTERIM CHECKPOINT problems

Mathematics
2 answers:
GenaCL600 [577]3 years ago
8 0
67 ones more than others

ra1l [238]3 years ago
5 0
The answer I got was -3
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What is a volume of this composite solid?
Alisiya [41]

Shape a = 6 x 4 x 3 = 72

Shape b = 4 x 4 x 4 = 64

72 + 64 = 136

A

7 0
3 years ago
Read 2 more answers
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
3 years ago
7
Airida [17]

Answer:

$308.50

Step-by-step explanation:

3702 ÷ 12 = 308.5 is her monthly payment

5 0
3 years ago
I need to know what 70% of 120 = ?
malfutka [58]
Question: <span>70% of 120 = ?

Work:

To find what </span><span>70% of 120 is. Do .70 times 120.

.70 x 120 = 84

Final Answer:

84
</span>
6 0
3 years ago
Read 2 more answers
One airline carried 3,720 people on 31 flights between Portland and Los Angeles. If there were the same number on each flight, h
kondor19780726 [428]

Divide total people by total flights:

3720/31 = 120

There was 120 people on each flight

7 0
3 years ago
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