Answer:
(
+4)-3
Step-by-step explanation:
since it says "and four" i think it means it is in parenthesis
Multiply both sides by 4
3w-2w-16=48
Combine like terms
w-16=48
Add 16 on both sides
w=64
Answer:
x=54
Step-by-step explanation:
easy
180 is a triangle
so
exterior+interior=180
so 180-123
57
now add all up to 180
180=57+x+69
x=54
The answer is the product of their slope is -1.
First, let's break this down. Perpendicular lines are line with opposite reciprocal slopes. Opposite meaning the inverse sign and reciprocal meaning flipped.
For instance,
If a line had the slope of 5, its inverse would have a slope of -1/5.
Now, if we multiply these numbers together,
5 * -1/5 = -1
The 5's cancel out.
This works for any two perpendicular lines
Answer:
y = 14
Step-by-step explanation:
Since AC = BC then the triangle is isosceles and the base angles are congruent, that is
∠A = ∠B = 50°, thus
∠C = 180 - (50 + 50) ← sum of angles in Δ = 180°
= 180 - 100 = 80°, hence
5y + 10 = 80 ( subtract 10 from both sides )
5y = 70 ( divide both sides by 5 )
y = 14
