Substitution.
3x + 2y = 12
y = 2x – 1

x=2 and y=3

Step-by-step explanation:

Given that y=2x-1

Then, 3x+2y=12

3x+2(2x-1)=12

3x+4x-2=12

7x=14

x=2

y=2(2)-1

y=3

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.