If AC =65, AB = 6c- 8 BC= 3c+1

c=8

Step-by-step explanation:

AB + BC = AC

6c-8 + 3c+1 =65 (simplify)

9c -7 =65 (combine like terms) (cancel out the -7 by adding 7 to both sides).

9c = 72 (Divide both sides by 9 to get c by itself.

c=8

Then substitute c for 8

AB = 6(8)-8 = 40

BC = 3(8)+1 = 25

AC = 40 + 25 =65

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.