E and F
note that x² + 8x + 16 is a perfect square which factors as ( x + 4 )², thus
(x + 4 )² = 7 ( take the square root of both sides )
x + 4 = ± √7 ( note plus or minus )
subtract 4 from both sides )
x = ± √7 - 4
x = √7 - 4 → E
x = - √7 - 4 → F
Answer:
4 cm
Step-by-step explanation:
Base 6 cm
Area 12 cm²
Formula:
h_b = 2 A/b
Answer:
2 or more percents add up to 100% or one percent is 100%
Step-by-step explanation: