Answer:
(3x-2)^2
Step-by-step explanation:
9x^2+6x+6x+4 now factor the first and second pair of terms...
3x(3x+2)+2(3x+2) which is equal to:
(3x+2)(3x+2) which is just:
(3x+2)^2
Answer:
76 mph
Step-by-step explanation:
Let x mph be the speed of the aircraft and y mph be the speed of the wind.
<u>With the wind:</u>
Distance = 798 miles
Time = 3 hours
Speed = x + y mph
Then

<u>Against the wind:</u>
Time = 7 hours
Speed = x - y mph
Then

Add these two equations:

Subtract these two equations:

The speed of the aircraft is 190 mph, the speed of the wind is 76 mph
Answer:
Step-by-step explanation:
22 - 2k = -4k - 16
22 + 2k = -16
2k = -38
k = -19