If the square pyramid shown above is sliced by a plane that passes through the top vertex, which of the following best describes the cross-section of the pyramid?
obtuse triangle
isosceles triangle
rectangle
square

Isosceles triangle

Step-by-step explanation:

A square pyramid has a square base and four triangular faces that meet at a common point. The square pyramid below is sliced by a plane perpendicular to the base and passing through the top vertex.The cross-section created by the plane is an isosceles triangle. Therefore, the isosceles is the best choice.

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1