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krok68 [10]
3 years ago
10

How do you use the pythagoreum theorum again? i know the formula is a^2+b^2=c^2 but how do you use it. Use the example 15^2+20^2

=c^2 to explain.
Mathematics
2 answers:
kiruha [24]3 years ago
3 0
It would be 225+400=c^2. square both sides to result in 25. 
mina [271]3 years ago
3 0

Answer:

25

Step-by-step explanation:

First, you simply square 15, which is 15^2 or 15 times 15, which is 225

Then, you square 20, which is 20^2 or 20 times 20, which is 400

Then, you have 225 + 400 = c^2

You simply add 225 + 400, which is 625

Then, you have 625 = c^2. You're probably wondering what do I do now!

Well, it's simple you square root both sides, to where it looks like this below.

√625 = √c^2

Then, c = 25


Hope This Helped!!!



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Two models of cellular telephones, red and blue, are stored in boxes. One box weighs twelve pounds and contains four of the red
GenaCL600 [577]
First, make a equation in which r= red and b=blue.

So, since in the first box it has 4 red models and one blue model equaling 12,

the first equation looks like 4r+b=12.

The second equation looks like 2r+b=8.

What you would do is try and first solve for r by getting rid of b.

Since both equation has a positive b, you would make one equation have a negative b by multiplying the whole equation by -1.

-1*(2r+b=8)= -2r-b=-8

Add.

4r+b=12
+(-2r-b=-8)

2r=4
r=2

Then, you plug in 2 for the r for any of the original equations.

4(2)+b=12

8+b=12

b=4

or

2(2)+b=8

4+b=8
b=4

So, the red models weigh 2 pounds while the blue models weigh 4.



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