The cost of a $745 laptop is discounted 20%. Mary has a coupon that takes 10% off the
sale price. How much does she pay for the
laptop?

i don’t understand is their answer choices?

Step-by-step explanation:

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

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.