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natta225 [31]
2 years ago
12

In how many ways can a teacher arrange five students in the front row of a classroom with a total of 20 students

Mathematics
1 answer:
Nataly [62]2 years ago
6 0
Select 5 students from 20 
means 20P5
<span>=1860480</span>
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Aria is a songwriter who collects royalties on her songs whenever they are played in a
fiasKO [112]

Answer:

number of commercial=4

number of movies=4

4 times 20=80

80 times 4= 320

320+80=400

Step-by-step explanation:

7 0
3 years ago
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There are 20 triangles and 8 circles. What is the simplest ratio of circles to total shapes?
Rudik [331]

Answer:

5 to 2

Step-by-step explanation:

You can simplify both 20 and 8 by 4.

20/4 = 5

8/4 = 2

3 0
3 years ago
Can someone help me graph this?
Elan Coil [88]

y axis is vertical x is horizontal

7 0
3 years ago
The ratio of girls to boys in the junior high band is 5 to 7. At the beginning of year, there were 72 students in the band. By t
rusak2 [61]
Ratio is 5girls:7boys with total 72 students
5+7= 12
72➗12= 6
6(5:7)= 30 girls : 42 boys

New ratio is 3:4 with 48 boys

48➗4= 12

So for girls 3x12= 36

So started with 30 girls ended with 36 girls... 6 girls joined band during the school year.
7 0
2 years ago
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The point-slope form of the equation of a line that passes through points (8,4) and (0, 2) is y-
Oksi-84 [34.3K]

For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

While the point-slope equation of a line is given by:

y-y_ {0} = m (x-x_ {0})

Where:

m: It's the slope

(x_ {0}, y_ {0}):It is a point through which the line passes

In this case we have a line through:

(8,4) and (0,2)

Therefore, its slope is:

m = \frac {2-4} {0-8} = \frac {-2} {- 8} = \frac {1} {4}

Its point-slope equation is:

y-4 = \frac {1} {4} (x-8)

Then, we manipulate the expression to find the equation of the slope-intersection form:

y-4 = \frac {1} {4} x- \frac {8} {4}\\y-4 = \frac {1} {4} x-2\\y = \frac {1} {4} x-2 + 4\\y = \frac {1} {4} x + 2

Therefore, the cut-off point with the y-axis is b = 2

ANswer:

y = \frac {1} {4} x + 2

7 0
3 years ago
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