Step-by-step explanation:
Let the larger number be y and the smaller be x.
All you need to do is convert the English statements to mathematical statements.
y = 3x – 1 /the larger of two numbers is 1 less than 3 times the smaller number/
2x + y = 18 + y /if twice the smaller number is increased by the larger number, the result is 18 more than the larger number/
Solve the second equation.
2x + y = 18 + y
2x = 18
x = 9
Then substitute the value of x in the first equation.
y = 3x – 1 = 3(9) – 1 = 27 – 1 = 26
Answer:
What are the possible answers.
Step-by-step explanation:
Answer:
Speed of boat in still water is 6km/h
Speed of current is 4km/h
Step-by-step explanation:
We know speed = distance / time
Let the speed of boat in still water be x
Let the speed of current be y
Hence the speed of boat, down stream =
Distance downstream = 20km
Time taken = 2 hours
We have
......(1)
Speed of boat upstream =
Distance upstream = 4
Time taken = 2
We have
...(2)
Adding (1) & (2)
Substituting in (1) we get
Answer:
C is the correct answer
Step-by-step explanation:
Im doing the quiz and im smart. (lol)
Answer:
answer a. Because 16^2=256
4^2+ 4/15^2=16.01
16.01<256 . Therefore, it is acute-angled acute