Answer:
Let the unknown number be x ;
Step-by-step explanation:
Subtract − 9 x − 7 −9x−7 from 8 x 2 − 5 x + 9 8x 2 −5x+9
1 answer:
You might be interested in
Answer:
α ≈ 76°
Step-by-step explanation:
The vertices of a rectangle are right , that is 90°
Using the tangent ratio in right triangle ABC
tanα = =
=
= 4, then
α = (4) ≈ 76° ( to the nearest degree )