Complementary angles add up to 90 degrees. Therefore, the answer is c. 18 + 72 = 90
Answer:
B
Step-by-step explanation:
x² + 9x
to complete the square
add ( half the coefficient of the x- term )² to x² + 9x
= x² + 2( )x + ( )²
= x² + 9x + ← the value of c
= (x + )² ← a perfect square
Answer:
Give the person above me brainliest
Step-by-step explanation:
Answer:
Step-by-step explanation: 4y+8=9 is an equation. 3-2 is an expression. 7y<6 is an inequality!