Answer:
96
Step-by-step explanation:
7 fridge fggg difficult grab fyi to figure
6x² -17x +5 = (6x² - 2x) - (15x + 5) (factoring by grouping)
2x (3x -1) - 5(3x - 1)
(2x -5) (3x - 1) is your final answer
hope this helps
Answer:
22.8906 sq in
Step-by-step explanation:
SA of a sphere = 4 π
r = 2.7 / 2 = 1.35
4 x 3.14 x = 22.8906
Step-by-step explanation:
Let the original speed of the train be x km/h.
Time taken to cover a distance of 360 km = 360/x hours.
New speed of the train = (x+5) km/h.
Time taken to cover a distance of 360 km at new speed = 360/x+5 hours.
Since, the train takes 1 hour less time,
∴360/x - 360/ x+5 = 1
⇒360 (5) = x² + 5x
⇒1800 = x² + 5x
⇒x² + 5x - 1800 = 0
⇒x² + 45x - 40x - 1800 = 0
⇒x (x+45) - 40( x +45) = 0
⇒(x+45) (x-40) = 0
⇒x = (-45), 40
But since speed cannot be in negative.
∴x = 40 km/hr.
Hence, the original speed of the train is 40 km/h.