Answer:
3
Step-by-step explanation:
20×0.15
equal 3
Answer:
5.19 for the roast beef & 2.39 for the cheese. 7.58$
10.00$-7.58$=3.42$
In combinatorics, this question is a combination question, because combination deals with selection while permutations deal with arrangement.

Plugging in our values,

That means 3 desserts from a tray of 8 desserts 56 times.
Asnswer:
Step-by-step explanation:
Firstly we calculate length of CB
/CA/^2 = /BA/^2 + /CB/^2
12^2 = 6^2 + /CB/^2
144 = 36 + /CB/^2
/CB/^2 = 144 - 36
/CB/^2 = 108
/CB/ = √108
/CB/ = 10.4cm
Sin55 = (/CB/)/(/CD/)
Sin55 = 10.4/(/CD/)
/CD/ = 10.4/sin55
/CD/ = 12.7cm
Answer:
b=-4
Step-by-step explanation:
-3b+6=18
-3b=12 (subtracted 6 from both sides)
b=-4 (divided both sides by -3)