Answer:
21 : 8
Step-by-step explanation:
A:B=3:4
A/B = 3/4
A = 3/4 B..... (1)
B:C =7:2
B/C = 7/2
B = 7/2 C.... (2)
From equations (1) & (2)

Slope=y1-y2/x1-x2
15--5/-1--8
20/7
Answer:
probability of any particular day being Thursday is
1
7.we have 7 probabilitiesas there are 7 days in a week we of which only one event thursday is 1 7.
-c + d
First, substitute -12.7 in for -c, and -4.4 in for d. / Your problem should look like: -12.7 + -4.4
Second, simplify. / Your problem should look like: -12.7 - 4.4
Third, simplify. / Your problem should look like: -17.1
Answer: -17.1 (A)