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Ede4ka [16]
2 years ago
11

David drove 1,092 miles in 7 days

Mathematics
1 answer:
Pavlova-9 [17]2 years ago
3 0

Answer:

what's the question you can't just give a sentence

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A certain company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a
Brrunno [24]

Answer:

A certain company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a battery is normally distributed, with a mean of 50 months and a standard deviation of 9 months. If the company does not want to make refunds for more than 10% of its batteries under the full-refund guarantee policy, for how long should the company guarantee the batteries?

The company should guarantee the batteries for 38 months.

Step-by-step explanation:

Using standard normal table,

P(Z < z) = 10%

=(Z < z) = 0.10

= P(Z <- 1.28 ) = 0.10

z = -1.28

Using z-score formula  

x = zσ  + μ

x = -1.28 *9+50

x = 38

Therefore, the company should guarantee the batteries for 38 months.

4 0
3 years ago
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5m^2-17m+6 in factor form
inysia [295]

Answer: (m-3)(5m-2)

Step-by-step explanation:

5m^2-17m+6 factored is (m-3)(5m-2).

3 0
1 year ago
Find the values of x and y
Tom [10]

Answer:

x = 110°, y =  110°

Step-by-step explanation:

y = 110° ( vertical to 110° )

x = 110° ( alternate angle to y )

7 0
3 years ago
5x-8=2x+25 help help
Maurinko [17]
The answer would be x=11
7 0
2 years ago
Of 350 solitaire games that jay played, he won 154 times. what percent of the games did jay win?​
ludmilkaskok [199]

Answer:

44.044%

Step-by-step explanation:

To find the answer we first have to find the value of each percent, to do this we divide 100 by 350, that gets us approximately 0.286. We know that he won 154 of them we then multiply 154 by 0.286 to get the percentage of games he won and we get 44.044.

5 0
3 years ago
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