Answer:
A.
Step-by-step explanation:
2x + y = -3
x - 2y = -4
2x + y = -3
2x - 4y = -8
----------------
5y = 5
y= 1
2x + y = -3
2x + (1) = -3
2x = -4
x = -2
Solution: x = -2, y = 1
Answer:
3,960 degrees
Step-by-step explanation:
The sum of interior angles of a polygon can be found using:
S= (n - 2)*180
where s is the sum, and n is the number of sides.
This is a 24 sided polygon. Therefore, substitute 24 in for n (number of sides).
S = (24 - 2)*180
Subtract inside the parentheses first
S= (22)*180
Multiply 22 and 180
S=3960
The sum of the interior angles of a 24 sided polygon is 3,960 degrees
Answer:
1/6
Step-by-step explanation:
after step 2, you simplify
Answer:
<h3>B. 40</h3>
Step-by-step explanation:
If line ps intersecting with line qr at point t as shown, then ∠ P T Q = ∠RTS (oppositely directed angle)
Given
PTQ is x + 28
RTS is 2x + 16
Since they are both equal, then x+28 = 2x+16
collect like terms
x-2x = 16-28
-x = -12
multiply both sides by -1
-1(-x) = -1(-12)
x = 12
Since ∠ P T Q = x+28, substitute x = 12 into the function
∠ P T Q = 12+28
∠ P T Q = 40
Hence measure of ∠ P T Q is 40°
