4
Use the work shown to find the solutions of the quadratic Which is a solution of x2-x- 3 = 0?
equation.
2-x- = 0
2-Y=3
4
2
2-x+
AN
3.
+
3.
12-X
+
4

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊

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  

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