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allochka39001 [22]
3 years ago
10

A trade magazine routinely checks the​ drive-through service times of​ fast-food restaurants. Upper A 95​% confidence interval t

hat results from examining 745 customers in one​ fast-food chain's​ drive-through has a lower bound of 177.6 seconds and an upper bound of 181.0 seconds. What does this​ mean?
Mathematics
1 answer:
katen-ka-za [31]3 years ago
8 0

Answer:

-A person can be 95% confident that the mean drive through service time  lies between 177.6 seconds and 181.0 seconds.

Step-by-step explanation:

- Confidence level is the degree of certainty we have on a particular statistic.

-The 95% confidence interval means that we are 95% confident that the mean drive through service time is lies between 177.6 seconds and 181.0 minutes.

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- 8y + 9x = -5<br> 8y + 7x = -75
IRINA_888 [86]

Answer:

x = -5 , y = -5

Step-by-step explanation:

- 8y + 9x = -5

8y + 7x = -75

__________

0 + 16x = - 80

x = -80 / 16

x = -5

- 8y + 9x = -5

-8y + 9(-5) = -5

-8y - 45 = -5

-8y = -5 + 45

-8y = 40

y = 40/-8

y = -5

hope it helps!

8 0
3 years ago
Mandisa draws a rectangle to represent the area of her yard. The area can be represented by 10x2 – 13x – 14.What expressions can
Y_Kistochka [10]

Answer: (x–2) and (10x+7)

Step-by-step explanation:

10x^2 – 13x – 14=

10x^2 – 20x + 7x – 14=

10x(x–2) + 7(x–2)=(x–2)(10x+7) ==> 3rd option

4 0
2 years ago
How do you know the opposite of a nonzero integer?
Oksi-84 [34.3K]

The opposite of a nonzero integer is the inverse of it. So to get the opposite, change the sign.

For example:

What's the opposite of 3?

-3.

I hope that I explained well :)

3 0
3 years ago
Read 2 more answers
What’s the connection between input and output in this question
lukranit [14]

ITS MUltipling by 3 silly its 243

5 0
2 years ago
Read 2 more answers
PLZ HELP ME
iVinArrow [24]

Answer:

y=-1x+8

Step-by-step explanation:

y=mx+b

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7 0
2 years ago
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