If you subtract Betty's time for the swim, 27.948 seconds, from Nancy's time, 28.004 seconds, you will find that Betty was faster than Nancy by 0.056 seconds. She would be considered the winner of the 50-meter freestyle swim.

8 0

3 years ago

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Find the equation of the line passing through (4,3) and parallel to the line whose equation is y=2x-6

SVETLANKA909090 [29]

Y=2x-6 (4, 3)
(X, Y)
3=2(4)+b
3=8+b
-5=b

Y=2x-5

5 0

3 years ago

In a class of 25 students, 15 of them have a driver's license. If ten students are randomly selected, what is the expected numbe

const2013 [10]

Answer:

Expected number of students would have a driver's license = 6

Step-by-step explanation:

Explanation:-

Given data In a class of 25 students, 15 of them have a driver's license

The sample proportion

$p = \frac{x}{n} = \frac{15}{25} = 0.6$

Let 'X' be the binomial distribution

Given sample size 'n' = 10

mean of the binomial distribution or expected number of students would have a driver's license

μ = n p

= 10 × 0.6

= 6

Conclusion:-

Expected number of students would have a driver's license = 6

5 0

2 years ago