Answer:
a = 180 - b - c
Step-by-step explanation:
To solve for a variable, move all the terms to the other side except a. You move terms across an equal sign using inverses.
So subtract b and c to the other side.
Answer:
Option A. 
Step-by-step explanation:
we know that
The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite.

substitute the values


Answer:
y=
x
Step-by-step explanation:
Given the two points:
- Origin (x1, y1) = (0, 0)
- The point (x2, y2) = (5, 9)
Because the x-axis is labeled time (in minutes) and the y-axis is labeled distance (in kilometers).
=>Time, x the independent variable,and distance is the dependent variable.
We have the standard form of a linear equation is:
y= mx + b where a is the slope
We know that, the slope of the function is:
m =
In this situatuon, m =
=> y=
x + b(1)
The line that goes through (0, 0) so we substitute (0, 0) into (1), we have:
0 =
*0 + b
<=> b = 0
So our equation that the graph represents is: y=
x
Answer:
Let's say that the whole book have 5a pages.
First day: a + 12
Second day: (4a)1/4+15= a + 15
Third day: (1/3)[ 4a - (a+15)] +18= a + 13
Forth day: 70
So we get this:
(a + 12) + (a + 15) + (a + 13) + 70 = 5a
a + 12 + a + 15 + a + 13 + 70 = 5a
3a + 110 = 5a
3a - 5a = -110
-2a = -110
a = 55
5a = 5(55) = 275
So the total pages are in the book is:
275 pages
I’m confused there are no numbers ?