Mathematics, 01.08.2019 20:30 dondre54

Every kid in mr. levans's 3rd grade class made a valentine for every kid in the class, including him- or herself. if the class made a total of 484 valentines, how many kids are in the class?

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Answer from: mmaglaya1

I would say 22 i first looked at amount of average kids in a class then tried every number close. 484/22=22

Answer from: 18sofia18

Let the total number of kids in Mr. Levans' 3rd grade class be x.

We know that each kid in the class made a Valentine for every kid in the class, including himself or herself.

So, the first kid made x Valentines. Likewise, the second kid too made x Valentines. If we go on so on and so forth, we will note that even the last, or the $x^{th}$ kid made x Valentines too. Thus, this way we know that every kid made x Valentines.

Therefore, the total number of Valentines made are $x\times x$ . It is given in the question that the number of Valentines made is 484.

Therefore, from the above information we conclude that:

$x\times x=x^2=484$

To find x we will have to take the square root of both sides. Which will give us:

$\sqrt{x^2}=\sqrt{484}$

x=22

Thus, the number of kids in the class is 22.

Answer from: Quest

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

$4/2 = 2\\7/3.5=2\\8/4=2\\10/5=2$

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

$y=\frac{x}{2}$

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

Answer from: Quest

step-by-step explanation:

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