<u>Answer:</u>
Speed of the boat in still water = 6.125 miles/hour
<u>Step-by-step explanation:</u>
We are given that a boat travels 33 miles downstream in 4 hours and the return trip takes the boat 7 hours.
We are to find the speed of the boat in the still water.
Assuming 
to be the speed of the boat in still water and 
to be the speed of the water.
The speeds of the boat add up when the boat and water travel in the same direction.
And the speed of the water is subtracted from the speed of the boat when the boat is moving upstream.
Adding the two equations to get:
+ 
___________________________
Solving this equation for and substituting the given values for 
:
Therefore, the speed of the boat in still water is 6.125 miles/hour.
X~1.25. All you have to do is graph the function and see where the graph crosses the x-axis.
To find out how many brothers they have, they need to multiply 4×1= 4
So there are 4 brothers.
I hope this helped :)
.4 is the answer m8
............................................................................................................................
Answer:
y = 6.5 units
Step-by-step explanation:
Let L be the length of sides of the square.
Given the following data;
Perimeter of square = 8y - 12
Area of square = 100 square units
To find the value of y;
Area of a square = L²
Substituting into the formula, we have;
100 = L²
L = √100
L = 10 units
Mathematically, the perimeter of a square is given by the formula;
Perimeter of a square = 4L
Substituting into the formula, we have;
8y - 12 = 4*10
8y - 12 = 40
8y = 40 + 12
8y = 52
y = 52/8
y = 6.5 units
