How to solve y= -5x-8, y=3x-24

x=2 and y=−18

Step-by-step explanation:

Let's solve the system by substitution.

y=−5x−8;y=3x−24

Step: Solve y=−5x−8 for y:

y=−5x−8

Step: Substitute−5x−8 for y in y=3x−24:

y=3x−24

−5x−8=3x−24

−5x−8+−3x=3x−24+−3x(Add -3x to both sides)

−8x−8=−24

−8x−8+8=−24+8(Add 8 to both sides)

−8x=−16

−8x/−8=−16/−8

(Divide both sides by -8)

x=2

Step: Substitute 2 for x in y=−5x−8:

y=−5x−8

y=(−5)(2)−8

y=−18 (Simplify both sides of the equation)

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.

its an acute right triangle

step-by-step explanation: