13. Supplementary angles are two angles that add up to 180 degrees.
3x + x = 180
Combine like terms:
4x = 180
4x divided by 4 = x
180 divided by 4 = 45
x = 45
Equation:
3(45) + 45 = 180
135 + 45 = 180 (TRUE STATEMENT)
Angle A = 135 degrees
Angle B = 45 degrees
This is correct as 135 + 45 adds up to 180 (making it a supplementary angle) AND 135 is 3 times bigger than 45 so it fits the answer’s standard.
Ima do number 14 in the comments as I don’t want to take too long to show number 13.
y = 21
x = 3
There is a 3:7 ratio between the trapezoids.
<span>Painters use ladders to paint on high buildings, and they use Pythagoras theorem to complete their work. </span>
2s+4=5(-4-2s)
Distribute the 5
2s+4=-20-10s
add ten s to both sides
12s+4=-20
subtract 4 from both sides
12s=-24
divide by 12 on both sides
s=-2
Hope this helps :D
Answer:
Step-by-step explanation:
Gradient = y2-y1 all over x2-x1
G = 3-(-5) all over 4-0
Therefore your answer = 1/2
