Two angles are complementary when their sum is equal to 90°.
So, ( 2x + 39 ) + ( 7x - 21 ) = 90°
9x + 18° = 90°
x = 8°
Putting value of x in the angles given :
( 2x + 39 )° = 2(8°) + 39° = 55°.
( 7x - 21 )° = 7(8°) - 21° = 35°.
Therefore, the angles are 55° and 35°.
Hence, this is the required solution.
Where the blue scribble is!
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Answer:
a. 3x^2 = 81
x^2 = 27

Step-by-step explanation:
Answer:
3 remaining of 4
Step-by-step explanation:
25÷7=3remainder of 4