<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.
Since the board is in inches, she can lay the board on the side of the rug. after she finds how many inches the rug is, Lyza can convert the inches into feet by dividing the amount of inches by 12.
You simply divide 32 ÷ 4 = 8, for problem A
The sum of the given decimal numbers is -7.68
<h3>Sum of decimal numbers</h3>
Decimal numbers are numbers that contains decimal points. Given the expression below;
4.62 + (−12.3).
Convert to fraction to have:
4.62 + (−12.3) = 462/100 - 123/10
Find the LCM
4.62 + (−12.3) = 462-1230/100
4.62 + (−12.3) = -768/100
4.62 + (−12.3) =-7.68
Hence the sum of the given decimal numbers is -7.68
Learn more on sum of numbers here; brainly.com/question/25734188
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