The average height of Sally, Jackson, Tina and David is 150 cm per person. The average height of Sally, Jackson and Tina is
145 cm per person. Tina is 5 cm taller than David. Jackson is
4/5 as tall as David. How tall is Sally?
cm
Enter the an Iwer

20

step-by-step explanation:

hiking down a winding trail.

step-by-step explanation:

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2