Answer:
see explanation
Step-by-step explanation:
saying 
is the same as saying 
because the first is saying 
and the second is saying 
one is just a more drawn out version to solve
Answer: =3x^3+5
Step-by-step explanation: Hope this help :D
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.
If the backpack weighs 120 N, then the equivalent
weight in pounds is about 26.98 .
All that business about lifting and joules of work is
completely irrelevant to this question.
5(2 + 3) = 5(2 + 3)
10 + 15 = 10 + 15
25 = 25 ✔️
