A ramp is to be built using a 20 foot long board and an 18 foot long board. to make the ramp stable, the builders would like to add a third board to create a right triangle. how long should that board be, to the nearest hundredth of a foot? justify

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

deez nu tz

step-by-step explanation:

addition

step-by-step explanation: