C. 4x + y = 21
4(3) + 9 = 21
12 + 9 = 21
21 = 21
Answer:
The speed of the boat in still water = 8 Km/hr
Step-by-step explanation:
Let the speed of the boat be x
According to question
(x-4)15 = (x+4)5
3x-12 = x+4
⇒x = 8 km/hr
Answer:
26.88
Step-by-step explanation:start eight times four is 32
and than eight times six is 48 than add a zero and do four times six is 24
and four times five is twenty add it up and line up the decimal points
hope i helped !!
Answer:
130
Step-by-step explanation:
Angle B = 180 - Angle A
180 - 50 = 130
