Answer:
d. 40
Step-by-step explanation:
The number of faces, edges and vertices is related by the following formula:
In which V is the number of vertices, E is the number of edges and F is the number of faces.
In this question:
We want to find E. So
The correct answer is given by option D.
Answer:
Option D, 44
Step-by-step explanation:
<u>Step 1: Find the size of the missing angle</u>
All triangles add up to 180 degrees.
<u>Step 2: Combine like terms</u>
<u>Step 3: Subtract 136 from both sides</u>
Answer: Option D, 44
Answer:
y = 5x + 8
Step-by-step explanation:
the equation of a line in slope-intercept form is
y = mx + c ( m is the slope and c the y-intercept )
y = - x + 9 is in this form
with slope m = -
given a line with slope m then the slope of a line perpendicular to it is
= - , hence
= - 1 / - = 5
y = 5x + c ← is the partial equation
to find c substitute (- 2, - 2) into the partial equation
- 2 = - 10 + c ⇒ c = - 2 + 10 = 8
y = 5x + 8 ← equation of perpendicular line
Answer:
Using a variable to represent a pattern is helpful because you do not need to constantly rewrite the pattern.
Step-by-step explanation:
Answer:
x = 10
Step-by-step explanation:
Since it is a straight line, the total degrees would be 180
5x + 13x = 180°
18x = 180°
Divide both sides by 18
x = 10