Answer:
4000Pa
Step-by-step explanation:
Pressure is force(thrust) per unit area.
Pressure=Force/Area
P=F/A
A.T.Q
Applied force=800N
Area=0.2m²
Pressure=800/0.2=4000Pa
Answer:
20%
Step-by-step explanation:
If you divide 32 out of 40, you will get .8. Multiply that by 100 and you will get 80%. The question asks for the percentage of <em>incorrect</em> ones, so subtract 80 out of 100 and you will get 20%.
She got 20% of the words incorrect.
1. TRUE - anything is symmetric about its axis of symmetry
2. FALSE - they open up or down, depending on the sign of "a"
3. TRUE - the x-coordinate of the vertex is -b/(2a). Its y-coordinate is f(x) at that point.
4. FALSE - for negative "a", the parabola opens downward.
