gbjjh

29.04.2021 • 

Mathematics

g Cell phones. Following are last year's local monthly bills, in dollars, for a random sample of 50 cell phone users. 32.88,31.09.16.13,104.2,47.65,116.96,61.97,43.74,13.52,15,37,30.09,16.93,44.67,28.08,64.68, 16.17,28.04,57.67,14.62,61.32,35.64,88.95,50.48,16.41,16.56,13.48,27.10,15.50,19.95,23.45,4 6.24,41.8,49.35,81.16,28.80,32.48,28.95,31.60,35.6,24.74,44.82,51.62,42.04,22.43,46.54,48.3 2,24.53,77.21,15.12,126.84 At the 5% significance level, do the data provide sufficient evidence to conclude that last year's mean local monthly bill for cell phone users has decreased from the 2001 mean of $47.37

Ответ:

willveloz4

04.01.2022

Mathematics

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N+3 evaluates to N+3
Multiply 10 by N+3

Multiply 10 by each term in N+3 term by term.

This is the distributive property of multiplication.

Multiply 10 and N
Multiply 1 and N

The N just gets copied along.
10 × N = 10N

Multiply 10 and 3
10 × 3 = 30

10*(N+3) evaluates to 10N+30

***The final answer is 10N+30***

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