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solniwko [45]
2 years ago
11

Suppose 8 out of every 20 students are absent from school less than five days a year. Predict how many students would be from sc

hool less than five days a year out of 400 students
Mathematics
1 answer:
vazorg [7]2 years ago
8 0

Answer:

160

Step-by-step explanation:

With the problem, it's best to put this into a fraction

8/20 of every student will be absent from school less than five days a year, which can then be simplified to 2/5.

There are multiple ways to go about this problem, but my preferred way is to then take 1/5th of 400, which can be done by taking 1*400/5 which equals 80. Since we are asking for 2/5's, just multiply that number by 2, which gives us 160 students.

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Find the coordinate that divides the directed line segment from A(-2,-4) to B(8,1) in the ratio of 2 to 3
zalisa [80]
We have that
A(-2,-4)  B(8,1) <span>

let
M-------> </span><span>the coordinate that divides the directed line segment from A to B in the ratio of 2 to 3

we know that

A--------------M----------------------B
        2                     3
distance AM is equal to (2/5) AB
</span>distance MB is equal to (3/5) AB
<span>so

step 1
find the x coordinate of point M
Mx=Ax+(2/5)*dABx
where
Mx is the x coordinate of point M
Ax is the x coordinate of point A
dABx is the distance AB in the x coordinate
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</span>Mx=-2+(2/5)*10-----> Mx=2

step 2
find the y coordinate of point M
My=Ay+(2/5)*dABy
where
My is the y coordinate of point M
Ay is the y coordinate of point A
dABy is the distance AB in the y coordinate
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the coordinates of point M is (2,-2)

see the attached figure

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3 years ago
What is the simplified expression for –3cd – d(2c – 4) – 4d?
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answer
</span><span>A:–5cd </span>
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3 years ago
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