Punctele A, B si C sunt coliniare in aceasta ordine. Aflati lungimea segmentului:a)AB, daca AC=20cm, BC=0,12dm

The length of the segment AB is 18.8 cm or 1.88 dm

Step-by-step explanation:

The question in English is

Points A, B and C are collinear in this order. Find the length of the segment: a) AB, if AC = 20 cm, BC = 0.12 dm

we have that

----> by Addition segment postulate

substitute the given values in centimeters

Remember that

so

solve for AB

Convert to dm

therefore

The length of the segment AB is 18.8 cm or 1.88 dm

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,