Answer:
5r + 9
Step-by-step explanation:
5r + 7 + 2 =
5r + 9
Hope this helped! <3
Answer:
Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
Step-by-step explanation:
Let x be the number of hours that Elizabeth shoveled and y be the number of hours that her sister shoveled.
Number of hours they shoveled = 30
So, x + y = 30 or
y = 30 - x
Jenna charged $12 per sidewalk.
So, her total earnings = 12x
Her sister charged $11 per sidewalk.
So, her total earnings = 11y.
Their total income = $347.50.
So, 12x + 11y = 347.5
Substitute y = 30 - x,
12x + 11(30 - x) = 347.5
12x + 330 - 11x = 347.5
x + 330 = 347.5
x = 347.5 - 330
x = 17.5 and
y = 30 - x = 30 - 17.5 = 12.5.
Hence, Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
Love what tines what will give u 54 firdt of all and all up the tickest for tickest toal is adding them all up
Answer:
And for the deviation we have:
And that value represent the best estimator for the population deviation since:
Step-by-step explanation:
For this case we have the following data:
1.48,1.45,1.54,1.52,1.52
The first step for this cae is find the sample mean with the following formula:
And replacing we got:
And now we can calculate the sample variance with the following formula:
And replacing we got:
And for the deviation we have:
And that value represent the best estimator for the population deviation since:
Answer:
48 inches
Step-by-step explanation:
12 in=1
24 in = 2
36 in = 3
48 in = 4
Add 12 everytime
