A62 1/2 pound bag of concrete mix has 3/5 of its weight made up of sand and small stones. the stones make up 1/4 of the weight. what is the weight of the stones in the bag of concrete

the answer is b

step-by-step explanation:

do i do it on a graph?

step-by-step explanation:

yes

step-by-step explanation:

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.