If a solid consists of three lateral faces and a base that are congruent isosceles triangles, what type of solid is it? a. octahedron b. triangular pyramid c. right triangular pyramid d. regular rectangular prism

It is a triangular pyramid ⇒ Answer B

Step-by-step explanation:

* Lets describe the solid

- It has three lateral faces

- It has one base

* We have two solids with one base pyramid or cone, but the

 cone has no lateral faces

∴ It is a pyramid

* lets check the type of the pyramid

- The solid has four congruent isosceles triangles

* That means one base shaped isosceles triangle and three

  lateral faces shaped isosceles triangles

∴ It is a triangular pyramid

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.