If triangle def has a 90° angle at vertex e, which statements are true? check all that apply.

triangle def is an obtuse triangle.

the angle at vertex d is acute.

the angle at vertex f is obtuse.

triangle def is a right triangle.

the angle at vertex d is obtuse.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Use long division to indentify (12xto the second power+15x-8)divided by 3x

Miranda drove her car 112 miles on a 4 gallons of gas and 182 miles on 6.5 gallons. how many gallons would she need to drive 420 miles?