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LenKa [72]
3 years ago
5

Fourteen subtracted from a number written as an expression 14-x x-14 x/14 14+x

Mathematics
1 answer:
Marizza181 [45]3 years ago
3 0
Answer: A (14-x)

x is just another word for a number
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Aaron is 5 years older than Bronwyn, Carl is 7 years older than Aaron and the sum of all their ages is 53 years. How old is Bron
Brut [27]
Bronwyn equals to 12
Aaron equals to 17
And Carl is 24
Do you want me to explain?
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3 years ago
The average annual cost of the first year of owning and caring for a large dog is $1,843 (US News and World Report, September 9,
ICE Princess25 [194]

Answer:

a. Error is 0.14

b. between 1913.68 to 1772.32

Step-by-step explanation:

Requirement a)

The margin of error is a statistic expressing the amount of random sampling error in a survey's results.

Given,

Size of the sample n = 50

We know, At 95% confidence interval,

The margin of error,

= 0.98/√n  

= 0.98/√50

= 0.98/7.07

= 0.13859 ~ 0.14

So the margin of error at 95% confidence level is 0.14.

Requirement b)

Given,

Standard deviation σ = 255

Population mean z = 1814

Size of the sample n = 50

We know, At 95% confidence interval,

(z-µ)/(σ/√n)  < Z_0.05

= - Z_0.05 < (z-µ)/(σ/√n) < Z_0.05

= - 1.96 * σ/√n < (z-µ)/(σ/√n)*  σ/√n  < 1.96 * σ/√n  [ in two tail Z test the value of Z_0.05 is 1.96 ]

= - 1.96 * 255/√50 < Z-µ <  1.96 * 255/√50

= -70.6828 < Z-µ < 70.6828

= 70.6828 > µ - Z > -70.6828

= 70.6828 + Z > µ > -70.6828 + Z

= 70.6828 + 1814 > µ > -70.6828 + 1814

=1913.68 > µ > 1772.32

So, the sample mean would be between 1913.68 to 1772.32.

7 0
3 years ago
Plz help me. im not as smart as I seem. 7th grade math. extra points!
Strike441 [17]
Okay what’s the question?
7 0
3 years ago
Two buses are traveling the same route toward a hotel. Bus 1 travels at a rate of 55 miles per hour This is bus two:
Charra [1.4K]

Answer:

Bus 1 is traveling faster.

Step-by-step explanation:

The information provided states that Bus 1 travels at 55 miles per hour. The graph shows that Bus 2 travels less than 50 miles per hour. This shows that Bus 1 travels more miles per hour.

Hope it helps!

3 0
3 years ago
Right Triangle Trigonometry.
DiKsa [7]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
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