vanessa has 150 gumdrops to decorated gingerbread houses. She has decorated two roofs with 18 gumdrops. which expression shows how many gumdrops vanessa has left a (150+18)*2 b (150-18)*2 c 180+(18*2) d. 180-(18*2) fifth grade question

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x