Question

Solve for the value of k.

(2k-2)
(k+2)°

Answer 1

Step-by-step explanation:2k+3+4k−3=

90

2, k, plus, 4, k, plus, 3, minus, 3, equals, 90

2k+4k+3−3=

90

Commutative property

6, k, equals, 90

6k=

90

Combine like terms

start fraction, 6, k, divided by, 6, end fraction, equals, start fraction, 90, divided by, 6, end fraction

6

6k

​ =6

90

Undo multiplication by dividing both sides by 6

k, equals, 15

k=

15

Answer 2

30

Explanation:

( 2k - 2 )°, 90° and ( k + 2 )° are linear pair angles.

Sum of linear pair angle is supplementary ( that is 180 ),

2k - 2 + 90 + k + 2 = 180

2k + k + 90 = 180

3k = 180 - 90

3k = 90

k = 90/3

k = 30

Note : -

□ means 90°