Let, the speed of boat = x
Speed of current = y
So, x + y = 280/7
x + y = 40 ---- first equation
x - y = 280/14
x - y = 20
x = 20 + y
Substitute this value of x in first equation,
20 + y + y = 40
2y = 40 - 20
y = 20/2
y = 10
Substitute this in first equation,
x + 10 = 40
x = 30
In short, Speed of Boat = 30 mph, & speed of current = 10 mph
Hope this helps!
Answer:
After investing for 3 years at 7% interest, your $600 investment will have grown to $735.03
The correct answer is a
(X+1)^2 - x^2=23
X^2 + 2x + 1 -x^2 =23
2x +1 =23
2x =22
X= 11
X+1= 12
Shouldn't your question be "How many minutes does it take to travel one mile"?
There are 60 minutes in an hour so 45 mph =
45 / 60 = .75 miles per minute
If we take the reciprocal we will get minutes per mile:
1 / .75 miles per minute = 1.3333333333 minutes per mile, so it will take 1.33333333 minutes.
<span>y=1/6x +4 is already in standard form, but the coefficient 1/6 is not an integer. An integer number is not a fraction number or rational number, so in order we have a standard form with integers coefficients only, multiply each member of the equation by 6. that is 6y =x +24, and 4y = x + 16 is the final answerHope this helps. Let me know if you need additional help!</span>
