Answer:
Step-by-step explanation:
we have

we know that
The sum of a quadratic equation and a linear equation will be a quadratic equation
so
Combine like terms

Answer:
trapezium................
Answer: Each peice of wood is equal to 0.625
Step-by-step explanation:
15/2 = 7.5
7.5/12 = 0.625
Answer:
Acute
Step-by-step explanation:
7² + 9² ? 11²
49 + 81 ? 121
130 is greater than 121, so it is an acute triangle