weebmodeactivated
weebmodeactivated weebmodeactivated
  • 01-01-2021
  • Mathematics
contestada

A car travels for x hours at a speed of (x + 2) km/h. If the distance
travelled is 15 km, write down an equation for x and solve it to find
the speed of the car.

Respuesta :

AlwaysAppear
AlwaysAppear AlwaysAppear
  • 01-01-2021

Step-by-step explanation:

S = v/t

(x+2)km/h

((x+2)×1000)/(60×60) = (15×1000)/(60×60)

(5(x+2)/18) = 25/6

30(x+2) = 18×25

x+2 = 15

x = 13m/s

Answer Link

Otras preguntas

Explain what is the same about two fractions that are like fractions
which trinomial is equivalent to (3x-1)(x+4)
having troubles with inequalities.. 3.8x + 14.5 < 32
Explain what is the same about two fractions that are like fractions
having troubles with inequalities.. 3.8x + 14.5 < 32
what is the sum of 7/10 and 6/100
what is the sum of 7/10 and 6/100
what is the sum of 7/10 and 6/100
which trinomial is equivalent to (3x-1)(x+4)
which trinomial is equivalent to (3x-1)(x+4)