Question

If m= Angle AOC=85°, m=Angle BOC = 2x + 10, and m Angle AOB = 4x – 15, find the degree measure of Angle BOCand Angle AOB. The diagram is not to scale.
A. m= 30°; m= 55°
B. m= 40°; m= 45°
C. m= 45°; m= 40°
D. m= 55°; m= 30°

Answer 1

http://assets.openstudy.com/updates/attachments/510747c5e4b069b605a25381-icewinifredd-1359431632263-geography.jpg

Answer 2

@ivettef365 @mathstudent55 @Wherewillweland

Answer 3

@missMob @Euler271 @timo86m

Answer 4

Please help

Answer 5

@*STAR*

Answer 6

ok honey, so what part is it that you do not understand

Answer 7

The equation...

Answer 8

why don't you draw the angle first and put them in place first......

Answer 9

you have to put the equation as follows:

4x -15 + 2x + 10 = 85 solve for x

Answer 10

oops wrong one, sorry

Answer 11

How would I do that @*STAR* oh ok

Answer 12

can you solve for x ?

Answer 13

ok let me write it down.

Answer 14

notice that the angles BOC and AOB if added together, they would sum up to make up AOC
and we know what AOC angle is

Answer 15

when you have value of x , then find angle BOC first
which is 2x + 10

Answer 16

4x -15 + 2x + 10 = 85
-10 -10

Answer 17

4x -15 + 2x=75

Answer 18

first combine like terms as follows:

4x + 2x = 6x and -15 + 10 = -5 so you have

6x - 5 = 85

Answer 19

4x -15 + 2x=75
+15 +15

Answer 20

4x + 2x=90

Answer 21

now add 5 on both sides and you have

6x = 90 now divide 90/6 what do you get ?

Answer 22

6x=90
--- ---
6 6

Answer 23

x=15

Answer 24

correct, now find BOC which is 2x + 10

Answer 25

but theres no = sigo i cat do what i just did to that?

Answer 26

sign