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Leto [7]
3 years ago
12

If a train travels a mile every 2.5 minutes, how many miles would it go in 3?

Mathematics
2 answers:
marissa [1.9K]3 years ago
8 0

Answer:

7.5

Step-by-step explanation:

motikmotik3 years ago
7 0
7.5 seconds

2.5 x 3 = 7.5
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Tori is throwing a pool party to kick off the summer. Her pool is empty, so she starts filling it with water from a garden hose.
Fittoniya [83]

Answer:

y/x

Step-by-step explanation:

Answer: y/x

water/time = unit rate = y/x

7 0
2 years ago
A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $79.20 and standard deviation of $
Nitella [24]

Answer:

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

Critical value at 90% confidence = 1.645

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = $79.20

Standard deviation r = $10.41

Number of samples n = 14

Confidence interval = 90%

Using the z table;

The critical value that should be used in constructing the confidence interval.

z(α=0.05) = 1.645

Critical value at 90% confidence z = 1.645

Substituting the values we have;

$79.20+/-1.645($10.42/√14)

$79.20+/-1.645($2.782189528308)

$79.20+/-$4.576701774067

$79.20+/-$4.577

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

5 0
3 years ago
1,743 divided bt 406
Vesna [10]

Answer:

After division we get the value  4.29310344828

Step-by-step explanation:

let x =1,743 ÷406

x= 1,743 ÷406

we get

x=4.29310344828

6 0
3 years ago
Read 2 more answers
Pls help ASAP so I can't fail and show proof why you pick that answer!
cluponka [151]

Answer:

idk

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What would 897,100 be if rounded to the nearest ten thousand?
Finger [1]
90,000

the reason is because look at the 1,000 place that rounds the 10,000 place to 0 and carries the 1 over to the 100,000 place


6 0
2 years ago
Read 2 more answers
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