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4vir4ik [10]
3 years ago
10

The first class had a kids in it, the second had b kids in it, and the third class had c kids in it. Kids from all three classes

were equally divided between two buses. How many kids were on each bus?
Mathematics
2 answers:
astra-53 [7]3 years ago
5 0
There are no numbers and only variables so I can't tell you the amount of kids on each bus but here is the equation:
(a*b*c)/2
kramer3 years ago
3 0
(a+b+c)/2. this is your answer. if it had the numbers i would solve it fully, but it only has variables.
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Answer:

a) f(0)=4

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b) f(-2) means what is the y-coordinate of the point at x=-2.

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d) f(x)=0 means what is x when y=0.  So go on the y-axis and find 0. Now anything on that line y=0 (horizontal line going through y=0 on the y-axis; also knowing as the x-axis for y=0) we need to look at.

There are 4 values we need to look at then.

x=-9

x=-3

x=3

x=9

e)  f(x)>0 means where is the curve above the x-axis.

The curve is above the x-axis:

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  • Between x=-3 and x=3
  • After x=9

The interval notation is:

(-∞,-9)∪(-3,3)∪(9,∞).

d) f(x)≥0 means where is the curve below or on the x-axis (also known as y=0).

The curve is below or on the x-axis:

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The interval notation is:

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g) The domain is where the curve exists for the x-values.

The domain is all real numbers between -10 and 10 (inclusive of both).

The curve starts at x=-10 and stops at x=10. The function exists a y value for any number between -10 and 10 (including both).

Interval notation is:

[-10,10]

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The range is between -4 and 4 (including both).

Interval notation is:

[-4,4]

The zeros are where the graph crosses the x-axis.

The graph crosses the x-axis at:

x=-9

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I see this from x=-6 to x=0 (exclusive of both).

I see this from x=6 to x=10 (exclusive of both).

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Reading left to right the graph decreases when you see the curve going down.

I see this from x=-10 to x=-6 ( exclusive of both).

I see this from x=0 to x=6 (exclusive of both).

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