Question

Help

Answer 1

Well what do complementary angles add up to.

Answer 2

90 degrees

Answer 3

Okay so you have 2 angles here that both add up to 90 degrees. Now we set up an equation.

Answer 4

What do you think it will be.

Answer 5

6x-10=4x-90

Answer 6

Not quite. If these two angles ADD up to EQUAL 90 degrees, whats the equation?

Answer 7

6x-10-4x=90

Answer 8

Good job. Now we can solve it like a normal algebraic equation.

Whats the first step?

Answer 9

combine like terms

Answer 10

Okay not yet. Take another look at your signs in the equation you wrote. It's almost perfect

Answer 11

Add?

Answer 12

Look at your diagram. And relook at the signs on your equation. One of them is off.

Answer 13

You put 6x-10-4x=90

Rethink a sign on one of those terms

Answer 14

6x-10+4x=90

Answer 15

Good job! Now we can combine like terms and solve for x :)

Answer 16

x=50

Answer 17

Not quite. Okay so we have

6x-10+4x=90

First, we have to add ten to the other side to get the x's by themself.

So now we have 6x+4x=100.

Now we can combine the like terms on x. 6x+4x =10x

So now we have 10x=100 which makes the answer what?

Answer 18

x=10

Answer 19

Great job!

Answer 20

It would work just the same way if a question gave you 2 angles that were supplementary. You would take the two angle, add them to equal 180. :)