-4x+6y=16 6x-9y=-24

solve
1.(-4,0)
2. (0,0)
3. infinitely many solutions
4. (5,6)
5. no solution

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.

25/6 hope it : )

step-by-step explanation:

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

.

6-3=3

3*3=9

9+12=21

21/3=7

7*8=56

56 is your answer