Question

y squared=( y/2) squared + 15 squared
can u help solve for y?

Answer 1

Is the equation:\[y ^{2} = (y/2)^{2} + 15^2\]

Answer 2

If yes, you have y^2 = y^2/4 + 225, or 3y^2 = 900, so y^2 = 300 and y = \[10\sqrt{3}\]

Answer 3

uuumm yes the first one is what i ment, but i dont follow the equation is what i got for triangles this well help me solve all three sides

Answer 4

So, (y/2)^2 = y^2/4.

Answer 5

15^2 is 225.

Answer 6

You have \[ y^2=y^2/4+225\]

Answer 7

So, multiply by 4 and you get 4y^2=y^2+900.

Answer 8

Then, subtract y^2 from both sides for 3y^2=900

Answer 9

no, this is just basic geometry, y squared not^

Answer 10

^ Means to the power of.

Answer 11

So y^2 is "y to the power of 2", or "y squared".

Answer 12

Then what is?

Answer 13

ok um it cant be 900 because its triangle and im trying to find the side lenghts all i have is 15^2 and need to find y

Answer 14

\[y^2=y^2/4+225 \implies 3x^2/4-225=0 \]\[\implies x^2-300=0 \implies x=\pm \sqrt{300}=\pm 10\sqrt3\]

Answer 15

Don't make the problem harder than it is.

Answer 16

OOPS, went from y to x as the variable halfway thru.... you see what I did?

Answer 17

umm im trying state that its not hard its simple and i just need a little help with it i have no idea as to how u got that and i dont think that it correct becuase triangles dont have side lenghts up to 300

Answer 18

\[y^2=y^2/4+225\implies 3x^2/4−225=0\]\[\implies y^2−300=0\implies y=±\sqrt{300}=±10\sqrt3\]If the answer is the side of a triangle, we need it to be positive.

Answer 19

The answer is 10 times the square root of three. That's only about 17.

Answer 20

so if ur saying that y=10\[\sqrt{3}\] then plug that into the equation i gave and tell me that iur right and im wrong.

Answer 21

Well, let's substitute.....\[y^2=y^2/4+225 \implies (10\sqrt3)^2=(10\sqrt3)^2/4+225 \implies \frac{900}{4}=225\]Which is true.

Answer 22

what are u talking i dont understand at all! where did u get y/4 and 225?

Answer 23

When you square y/2, it becomes y^2/4, since both the numerator and denominator are squared.

Answer 24

ok i follow that but what about 225

Answer 25

That is 15^2.

Answer 26

ok