If a triangle has sides of lengths a, b, and c, and a power 2 + b power 2= c power 2, then the triangle is a right triangle. let b=84 units and let c=85 units, as shown.

what is the value for a that completes the set of three numbers that can be the side lengths of a right triangle?

answer:

the unknown side can be solved by pythagoras theorem

a=√( 85sq - 84 sq)

= 13 units

x = -2

y = 848

step-by-step explanation:

plug in the numbers

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you