Solve the equation by using the quadratic formula. 8 x squared + 5 x = 3

a. x = StartFraction 8 Over 3 EndFraction, negative 1
c. x = StartFraction 3 Over 8 EndFraction, negative 1
b. x = StartFraction 8 Over 3 EndFraction, 0
d. x = StartFraction 8 Over 3 EndFraction, 1

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

the answer is here: : )

:

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

300pi

step-by-step explanation: