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iogann1982 [59]
3 years ago
5

a triceatops has to children. one is 3 times older than the other. Together, their age is 50 months how old are they?

Mathematics
1 answer:
Charra [1.4K]3 years ago
5 0
To solve this problem, create two equations with x and y. The pieces of information that we know are that the first child is 3 times older than the second child. Therefore if we assign child #1 the variable of x and child #2 the variable of y, we could get the following equation: 

3x = y 

Now, we also know that together their ages equal 50 months. Therefore:

x + y = 50 (months) 

So, using these two equations you can use either substitution or elimination to find the values of x and y. You would first need to rearrange the first equation to 3x - y = 0 (just moving the y to the other side). 

Then, you could add the equations together as followed: 

3x - y = 0 
x  + y = 50 
___________
4x = 50 
x   = 12.5

And then fill that value in to one of the equations to find y.

3x = y 
3(12.5) = y 
y = 37.5

So, one child is 12.5 months old and the other is 37.5 months old!
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Answer:

See step by step

Step-by-step explanation:

1. First question, do they represent functions? The one o. the left is a function because if you do the vertical line test. It only passes through a point once so it is a function. while on the right if you do the vertical line test, it passes through a point twice so it not a function. For 2.. n other words, since the domain of this equation is all real numbers or negative infinity to positives infinity

let say x=1 and x=-1 and we use the equation

y =  {x}^{2}

when we plug both those in we get

y = 1

this means that we can have two different x-values to equal out to the same y value. This is the definition of a function. So the one on the right is a function.

However the one on the left is a relation. TO Prove it, the domain of that function is all real numbers equal to or greater than zero, so let use 4.

{y}^{2}  = 4

{y} = 2 \: or \:  - 2

Since there are 2 possible answer choices as the y value, this isn't a function. It a relation. It maps a group of ordered sets to one x value. Which is the opposite of the function. So the one of the left is a relation

3 0
3 years ago
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Hello.

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</span></span>Take the square root of both sides of the equation to eliminate the exponent on the left side.
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Pull terms out from under the radical, assuming positive real numbers.The complete solution is the result of both the positive and negative portions of the solution.
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Have a nice day</span></span>
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