Answer:
D. Rhombus.
Step-by-step explanation:
This will be a quadrilateral with 4 equal sides.
The oppsoite angles will be equal but they will not be 90 degrees as each triangle of the 3 dimensional figure is an equilateral triangle.
Therfore the cross section is a rhombus.
Answer:
Step-by-step explanation:
78-90 = 12
2 divided by 5 = 0.4
2/5 = 0.4
2/5 is equal to 0.4
Answer:
1A) Degree: 3
1B) 4 terms
1C) 
2A) 
2B) 
Step-by-step explanation:
The given polynomial is 
Let us rewrite the polynomial in decreasing powers of x.
This gives us the expression;
-----> This is called the standard form.
So let us answer the question:
A) The degree is the exponent of the first term when the polynomial is written in standard form.
Degree: 3
B) The terms are separated by + or - signs.
Number of terms: 4
C) Standard form: 
2A) The given expression is 
We expand using the distributive property to get:

We regroup the terms to get:

We simplify to obtain:

2B) The given expression is 

Regroup the terms to get:

We simplify to get:
