Answer:
1.5 mph
Step-by-step explanation:
Let speed of boat be x
let speed of current be c
Also, note D = RT
D is distance
R is rate
T is time
Now, for first leg, we can write:
(x+c)3 = D
And for second leg , we can write:
(x-c)4.8 = D [note 4 hour 48 minutes is 4.8 hours]
We can equate both D's to get:
(x+c)3 = (x-c)4.8
3x + 3c = 4.8x - 4.8c
7.8c = 1.8x
We know x = 6.5 [given], plugging it in and solving for c:
7.8c = 1.8(6.5)
c = 1.5
Speed of Current = 1.5 miles per hour
Answer: you can use Pythagorean theorem
, which formula is 
, "a" and "b" are the sides, and "c" is the hypotenuse (the longest side, the side opposite to the 90 degree angle)
<em>Example:</em>
If they give that one side is 2 inches and the other side is 4 and you need to find the hypotenuse it would be like this:
1) plug the numbers to the formula
2) solve the exponents of the numbers given (not the letter, in this case "c")
16 + 36 = 
3) combine like terms (in this case 16 +36)
52 =
4) Finally, Find the square root of "c" to remove its exponent and do the same to the other side, in this case 52)
(square root of 52 rounded to the nearest hundred is 7.21)
7.21 = c
<h3><u><em>
So 7.21 is your missing side in this example</em></u></h3><h3>look up Pythagorean theorem Khan Academy</h3>
B. because it is 10 being subtracted from the fraction.
Answer:
Option (C)
Step-by-step explanation:
Value of y is more than the product of x and 2.
Equation representing the given condition will be,
y = 2x + 1
Therefore, by substituting the values of x in the equation we can get the table for the input - output values for the equation,
x 0 1 2 3 4
y 1 3 5 7 9
Therefore, table given in the Option (C) will be the correct option.
The answer is
C' = (0,3)
good luck
