Need math . match the y-coordinates with their corresponding pairs of x-coordinates on the unit circle.

No. 1 of tiles goes to No. 3 of pairs

No. 2 of tiles goes to No. 4 of pairs

No. 3 of tiles goes to No. 2 of pairs

No. 4 of tiles goes to No. 1 of pairs

Step-by-step explanation:

We are given the y co-ordinates in the box named 'TILES' and have to match the corresponding x co-ordinates from the box named "PAIRS' such that they satisfy the unit circle.

i.e. the pair (x,y) satisfies .

Now, we substitute the values of 'x' and 'y' provided in 'TILES' and 'PAIRS' correspondingly in the above equation of the unit circle.

We get that, the following co-ordinates form the pairs for the unit circle.

i.e. x = ± and y =

x = ± and y =

x = ± and y =

x = ± and y =

what do you need me to answer?

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -