Answer:
35
Step-by-step explanation:
Simplified: 10
(4*3)=12
1/3*12=4
4+6=10
Angles 1&3 are vertically opposite angles so they would be equal
Angles 3&4 are alternate interior angles and would also be equal
Angles 1&2 and 2&3 are angles on a straight line so they would add to 180°
Angles 1&4 are corresponding angles and would be equal.
Since angle 1&2 add to 180
180-81=99
So angle 2 is 99°
Angles 1&3 are vertically opposite would be equal so angle 3 is 81°
Angles 1&4 are corresponding so angle 4 is 81°
I hope this helps :)
Well one way that you can use multiplication to estimate and solve division problems is that when you are dividing a smaller number or any number into another number for example... 12/324 you can multiply what times 12 equals 324. That or use a calculator if it is aloud I may add. Sometimes it is easier to do it that way then doing out all the horrible long steps making it harder to do.
Answer:
x = 20
Step-by-step explanation:
3x - 10 = x + 30
2x = 40
x = 20