The formula is v=pi(r^2)(h)
pi(2^2)(4.2)
pi(16.8)
volume= 52.78m^2
Hope this helps :)
(-x³ +3x +4) -(2x³ +7x² -9) = -x³ +3x +4 -2x³ -7x² +9 . . . . eliminate parentheses
= x³(-1-2) +x²(-7) +x(3) +(4+9)
= -3x³ -7x² +3x +13 . . . matches the second choice.
Answer:tan (7pi/8) = -4.4142
Explanation:The tangent half-angle formula is shown in the attached image
We have:
alpha = 7pi / 8
alpha/2 = 7pi / 16
Substitute in the formula with the alpha and alpha/2 as follows:tan (7pi/8) = [2tan(7pi / 16)] / [1 - tan(7pi / 16)tan(7pi / 16)]
tan (7pi/8) = -4.4142
Hope this helps :)
1/10 = 0.1
2,871,000 ×0.1 = 287,100
Your answer is 287,100
HOPE THIS HELPED :)