Algebra assignments please help me.?

koreansun

Find the length of the hypotenuse of a right triangle if a = 3 and b = 4. Use: a^2 + b^2 = c^2

Solve, using the quadratic formula: 2x^2 - 3x + 1=0

juliet

The answer to your first question:

a^2 + b^2 = c^2

3^2 + 4^2 = c^2

9 + 16 = c^2

25 = c^2

square root both sides:

5 = c

So the hypotenuse = 5.

The second question...

the quadratic formula is -b ± √b^2 - 4ac

all over 2a

So, in your equation, a=2, b=-3, c=1. Plug them into the equation:

3 ± √9-8

over 4

Now you separate it into two equations because of the plus/minus sign.

3 + 1

over 4

and

3-1

over 4

So your final two answers are 1 and 1/2.

A great resource if you're in algebra, by the way, is www.wolframalpha.com. You just type in your equation and press enter and it will show you the correct answers so that you can check them against your own. Hope this helped!

anonymous

(9 + 16) = c^2

sqrt(25) = c

5 = c

Second question:

x= .5 and x= 1

jas

(9 + 16) = c^2

sqrt(25) = c

5 = c

Second question:

x= .5 and x= 1

kelvykelko

first of is summer so i cant answers ur question its summer time go off and have fun and if u are summer school u should have payed attention in class