6questions, 60 points

1. describe the cross section of a sphere.

the cross section is a circle.

the cross section is a square.

the cross section is a cone.

the cross section is a triangle.

2.solve -0.5y > 15. check your solution.

y < -30

y < -7.5

y > -30

y > -7.5

3.an edge on a polyhedron is the intersection of three or more faces.

true

false

4. solve t/-10≤7
a. t≤-70
b. t≥-0.7
c. t≥70
d. t≤-0.7

5.amber is using 3 ft by 14 ft sheets of wallpaper to cover a rectangle wall that has an area of 240 ft squared. what is the least number of sheets of wallpaper she will need?

a. 6 sheets
b.15 sheets
c. 5 sheets
d. 5.71 sheets

6.solve – d + 5 + 2d > 1. check your solution.

d < - 4

d > - 4

d > 6

d < 6