The lengths in cm, of the sides of a triangle are 3x - 5, 2x-1 and x+1 3x - 5
2x - 1
(a) Write down an expression, in terms of x, for the perimeter of the triangle
(2)
The perimeter of the triangle is 31 cm.
(b) Work out the value of x.

a) p = 6x - 5

b) x = 6

Step-by-step explanation:

a) p = a + b + c

p = 3x - 5 + 2x - 1 + x + 1

p = 6x - 5

b) p = 6x - 5 =31

6x - 5 = 31

6x = 36

x = 6

She traveled 0.25 miles or 1/4 of a mile in 1 minute

Step-by-step explanation:

2 miles takes 8 minutes

1 mile takes 4 minutes

1/2 or 0.50 miles takes 2 minutes

so she would travel 0.25 miles or 1/4 of a mile in 1 minute