Answer:
5mph
Step-by-step explanation:
Let speed of boat in still water is s.
Distance proportional to speed
90/10 = (s+ 4)/(s - 4)
=> 9s - 36 = s + 4
=> 8s = 40
=> s= 5 mph
:-)
Answer:
$2,790
Step-by-step explanation:
This is the concept of commercial arithmetic, the amount of tax calculated from $90,000 will be:
Rate*value
=31/1000*90000
=$2,790
the answer is $2,790
To solve for this, we need to multiply 50 by 1 1/2, or 1.50.
When you multiply 50 by 1.5, you get a product of 75; therefore, your answer is going to be 75.
I hope this helps!
3x + 6y = 12
6y = - 3x + 12
y = - 1/2x + 2
Since your slope is - 1/2, we take the opposite reciprocal to find the perpendicular slope. Your perpendicular slope is 2.
y = 2x + b
Plug in the point to solve for b and get your final line.
6 = 2(4) + b
6 = 8 + b
6 - 8 = b
- 2 = b
y = 2x - 2 is your perpendicular line
I have to stretch this out so bear with me This answer is 4