The following rule is used to work out the total cost, in cunos, ofhings Total cost - 9 euros for each hour plus 20 euro
Paolo hires the room for 5 hours.
(a) Work out the total cost.

65

Step-by-step explanation:

9+9+9+9+9

or

9×5 both = 45

45+20 euros = 65

45 euros per 5 hours , + bonus the 20 euros = 65 in total.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

answer:

sometimes

*i think