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vlabodo [156]
3 years ago
5

It takes about 20 minutes to grade a student’s paper. how long, in hours, does it take to grade papers for a class of 25 people?

Mathematics
1 answer:
lakkis [162]3 years ago
6 0
You have to multiply the 20 min by the number of student in the class which are 25. Then take the minutes and devide them by the number of minutes in an hour.

20 x 25 = 500 minutes
500/60 = 8.3333 (round down) 8 hrs
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A moving company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour.how long is job that cost
adoni [48]
1. Make an equation.
Moving company #1: y = 17x + 840
Moving company #2: y = 22x + 760

2. Put the equations together and solve
17x + 840 = 22x + 760
-17x            -17x
840 = 5x + 760
-760        -760
80 = 5x 
5       5
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When a job is 16 hours they both charge the same thing.
5 0
4 years ago
The circumference of a circle is 56.52 feet. What is the circle's radius?
matrenka [14]

Answer:

If we substitute pi as 3.14 we would be doing -

56.52/3.14 = 18

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BUT if you want it with PI. . .

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7 0
3 years ago
(01.03 MC)<br> Which of the following is a step in simplifying the expression<br> (Xy^4/x^-5y^5)^3
Sati [7]

\displaystyle\tt\left(\frac{xy^4}{x^{-5}y^5}\right)^{-3} =\frac{x^{-3}y^{4\cdot(-3)}}{x^{-5\cdot(-3)}y^{5\cdot(-3)}}=\boxed{\tt\frac{x^{-3}y^{-12}}{x^{15}y^{-15}}}

4 0
3 years ago
Can someone hep explain this plese
enyata [817]

Answer:

multiply the 3 and the 2= 6

Step-by-step explanation:

6 is the answer

3 0
3 years ago
Eighteenpassengers get on an airport shuttle at the airport. The shuttle has a route that includessixhotels, and passengersgetof
xz_007 [3.2K]

Answer:

So, exist 18564 different possibilities.

Step-by-step explanation:

We know that the eighteen passengers get on an airport shuttle at the airport.  The shuttle has a route that includes six hotels, and passengers get off the shuttle at their hotel.

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C_6^{18}=\frac{18!}{6!(18-6)!}=18564

So, exist 18564 different possibilities.

5 0
3 years ago
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