First, use distributive property on the right half.
2 * 5 = 10
2 * 2n = 4n
4n - 9 = 10 + 4n
Add 9 to both sides
4n = 19 + 4n
Subtract 4n from both sides
0 = 19
But thats not true. Therefore, there is no solution.
Answer:
A) .05
B) 3.20
Step-by-step explanation:
1.45-1.40 = .05
13.25-10.05 = 3.20
Any two lines that cross form 2 sets of equal acute angles and 2 sets of obtuse angles. One of each will add to 180o.
obtuse + acute = 180
obtuse = 145
145 + acute = 180 subtract 145 from both sides.
acute = 180 - 145
acute = 35
Jen is twelve years old and her mom is 38. 38 plus 12 is 50