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attashe74 [19]
3 years ago
13

(-7,1),(19,-17) slope

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0

Answer:-\frac{9}{13}

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From long experience, it is known that the time it takes to do an oil change and lubrication job on a vehicle has a normal distr
djyliett [7]

Answer: 29.916 minutes

Step-by-step explanation:

Given the following :

Mean of distribution = 17.8 minutes

Standard deviation of distribution = 5.2 minutes

Percentage of customers to give free lube and oil change service should not exceed 1% if the customer waits beyond the guaranteed time ;

Length of guarantee :

Since % of customers should not exceed 1%

Then probability of not being chosen = (1 - 0.01) = 0.99

Using the z table to find the Zscore of 0.99,

Zscore of 0.99 = 2.33

This is 2.33 standard deviations above the mean

(2.33 × standard deviation) + mean value

(2.33 × 5.2 minutes) + 17.8 minutes

12.116 + 17.8

= 29.916 minutes

8 0
3 years ago
1/1-cosA-1/1+cosA=2cotAxcosecA<br>​
castortr0y [4]

Answer:

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5 0
2 years ago
Select the correct answer.
vitfil [10]
Is there an image i don’t understand what expressions you’re asking for?
6 0
2 years ago
Find the range of f(x)=x+3 <br> when the domain (2,4,6)
jarptica [38.1K]
<u>f(x) = x + 3</u>
f(2) = 2 + 3
f(2) = 5

f(4) = 4 + 5
f(4) = 9

f(6) = 6 + 5
f(6) = 11

{(2, 5), (4, 9), (6, 11)}
5 0
3 years ago
If angle a has a measurement of 42 degrees and is complentary to angle b , what's the measure of angle b ?
USPshnik [31]
B is 90-42=48° since complementary angles add to 90°
5 0
3 years ago
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