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bija089 [108]
3 years ago
5

It takes the teacher 39 minutes to grade 3 book reports. At this rate, how long will it take the teacher to grade 120 book repor

ts?
Mathematics
2 answers:
zzz [600]3 years ago
7 0

it will take 1560 minutes

zheka24 [161]3 years ago
4 0

Answer:

26 hours

Step-by-step explanation:

first you need to divide 39 by 3 to get 13 now once you get 13 you will multiply it by 120 once you are done you get 1560 now the number that we got is how long a teacher would have to grade in minutes now if you want we can convert it into hours which would give us 26 hours.

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If a system of equations has infinite solutions, what do you know about the graph?
Anton [14]

Answer:

C

Step-by-step explanation:

A: Perpendicular lines have 1 solution. A is not the answer.

B: If the lines intersect, there is one solution, not many.

C: The lines are the same or can be reduced to being the same. C is the answer.

D: The lines don't intersect means that the lines are parallel. There isn't a solution.

3 0
3 years ago
Find the distance points p (3,6) and q (7,3) to the nearest tenth?
Vladimir79 [104]
<h3>Answer: 5</h3>

=========================================================

One method is to plot the points P(3,6) and Q(7,3) on the same xy grid.  Plot a third point R at (3,3). See the diagram below.

A right triangle forms in which we can find the legs PR = 3 and RQ = 4. The hypotenuse is found through the pythagorean theorem.

a^2+b^2=c^2

3^2+4^2 = c^2

9+16 = c^2

c^2 = 25

c = sqrt(25)

c = 5

This is the length of PQ

-----------------------------------

Or you can use the distance formula which is effectively using the pythagorean theorem just in a slightly different format (though it may not be obvious).

d = \text{Distance from P to Q}\\\\d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\\\\d = \sqrt{(3-7)^2+(6-3)^2}\\\\d = \sqrt{(-4)^2+(3)^2}\\\\d = \sqrt{16+9}\\\\d = \sqrt{25}\\\\d = 5\\\\

8 0
3 years ago
Read 2 more answers
12 3/8 divided by 3/4
oksano4ka [1.4K]

Answer:

32/2 or 16.5

Step-by-step explanation:

4 0
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: Your experience indicates that offering a discount in your emails increases responses by 80%. Your last email, without a disco
timofeeve [1]
For this case we can make the following rule of three:
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 Clearing the value of x we have:
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 Answer:
 
you would expect about:
 
a) 41,400 responses
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3 years ago
A function f has the property that f(x-y)=f(x)/(y) f(y) does not equal zero if f (8)=256and f(5)=32 what is the value of f(3)
Dvinal [7]

Answer:

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2 years ago
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