Solution:
<u>Note that:</u>
- 3x + 50 = 6x - 10 (Vertically opposite angles)
Simplify the equation to find x.
<u>Add 10 both sides.</u>
- 3x + 50 = 6x - 10
- => 3x + 50 + 10 = 6x - 10 + 10
- => 3x + 60 = 6x
<u>Subtract 3x both sides.</u>
- 3x + 60 = 6x
- => 3x - 3x + 60 = 6x - 3x
- => 60 = 3x
<u>Divide 3 both sides.</u>
- 60 = 3x
- => 60/3 = 3x/3
- => x = 20
They are equal because of you simplify 80/100 by dividing by 10 u get 8/10
Answer:
a=x and b=9
(x+9)(x−9)
Explanation:
Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b)
Answer:
2nd one.
Step-by-step explanation:
