Factor this trinomial. x^2 - 9x + 20
A. (x - 2)(x - 10)
B. (x - 4)(x - 5)
C. (x-2)(x + 10)
D. (x-4)(x + 5)

b

Step-by-step explanation:

factorise

(x²-5x) - (4x+20)

x(x-5) -4( x-5)

(x-4) (x-5)

18.8 cubic inches.

step-by-step explanation:

volume of a cone = πr²h

r = 1.5 inches

h = 8 inches

pi = 3.14

volume of our cone = × 3.14 × 1.5² × 8 = 18.84 square inches

or equals to 18.8 square inches rounded up to nearest tenth.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m