Let the speed of the current be x and the speed of the canoe in still water be y, then
Adding the two equations, we have:
From any of the equations, we have that x = 2
Therefore, the speed of the current is 2 miles per hour while the speed of the canoe in still water is 5 miles per hour.
The given function is f(z)=3z-8 for the values f(-4), f(2) and f(z-7) respectively -20, -2 and 3z-29 respectively.
The given function is f(z)=3z-8.
We need to find the value of f(-4), f(2), f(z-7).
<h3>What is a function?</h3>
In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.
Now to find f(-4), replace z from -4.
f(-4)=3(-4)-8=-12-8=-20
Now to find f(2), replace z from 2.
f(2)=3(2)-8=6-8=-2
Now to find f(z-7), replace z from z-7.
f(z-7)=3(z-7)-8=3z-21-8=3z-29.
Therefore, the given function is f(z)=3z-8 for the values f(-4), f(2) and f(z-7) respectively -20, -2 and 3z-29 respectively.
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Answer:
Step-by-step explanation:
The question is to simplify the expression 
First, we can eliminate the 2nd parenthesis expression by changing signs of all the terms since there is a "-" sign in front. Then we add the "Like Terms". The process is shown below:
The first answer choices (has some typos) is correct. The correct answer is
Step-by-step explanation:
<h3>a. </h3>
<h2>______________</h2>
<h3>B. </h3>
<h2>______________</h2>
<h3>C. </h3>
<h2>______________</h2>
<h3>D. </h3>
<h2>______________</h2>
<h3>E. </h3>
Answer:
v=58.33in^3
Step-by-step explanation:
v=a^2h/3=5^2×7/3=58.33333 in^3
