Answer:
m∠ADC = 90°
5x-5 = 90
x = 19
Step-by-step explanation:
Its 81 Step-by-step explanation:
1. Pi is usually referred to as 3.14, so the answer is 1
2. b) Endless
3. d) √5
4. a) 1/27
5. c) Irrational Numbers
I hope this helps! Let me know if you would like an explanation as to how I got the answers :)
Answer:
Simplifying
3.2 = 2y
Solving
3.2 = 2y
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-2y' to each side of the equation.
3.2 + -2y = 2y + -2y
Combine like terms: 2y + -2y = 0
3.2 + -2y = 0
Add '-3.2' to each side of the equation.
3.2 + -3.2 + -2y = 0 + -3.2
Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -2y = 0 + -3.2
-2y = 0 + -3.2
Combine like terms: 0 + -3.2 = -3.2
-2y = -3.2
Divide each side by '-2'.
y = 1.6
Simplifying
y = 1.6
Step-by-step explanation:
Answer:
42°
Step-by-step explanation:
given OA and OC are perpendicular, the angle between the lines are 90°
this means that ∠AOB and ∠BOC add up to 90°, i.e.
(6x-6) + (5x+8) = 90
6x-6 + 5x+8 = 90
11x - 6 +8 = 90
11x + 2 = 90 (subtract 2 from both sides)
11x = 90- 2
11x = 88 (divide both sides by 11)
x = 8
Hence, m∠BOC
= 6x - 6
= 6(8) - 6
= 48 - 6
= 42°
