Answer:
3 and 9
if f(x)=x^2+13 and g(x)=12x-14
Step-by-step explanation:
So when we are looking for the intersection of two functions, we are trying to figure out when they are the same. When you think same, you should think equal (=).
So we want to find when f(x)=g(x) for x.
f(x)=g(x)
Let's get everything to one side.
Subtracting 12x and adding 14 to both sides.
I'm going to reorder the left hand side and also simplify the 13+14 part:
Now since the coefficent of x^2 is just 1 our job is to find two numbers that multiply to be 27 and add up to be -12.
Those numbers are -3 and -9 since -3(-9)=27 and -3+(-9)=-12.
So the factored form of our equation is
Since the product is 0, then at least one of the factors must be 0.
So we want to solve both x-3=0 and x-9=0.
x-3=0 can be solved by adding 3 on both sides. This gives us x=3.
x-9=9 can be solved by adding 9 on both sides. This gives us x=9.
The intersection of f and g happens at x=3 or x=9.
Answer:
38
Step-by-step explanation:
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The answer is 36 m.
This is really simple. To solve, multiply the length and the width and BAM! There's your answer. So for this problem, multiply 12 by 3 and don't forget to include the unit measurement.
12 * 3 = 36
Area = 36 m
Hope this helps! :)
Answer: 96
Step-by-step explanation: take 12 (1 dozen) and times it by 8
12x8=96
Answer:
$62.80
Step-by-step explanation:
The commission for the $500 t.v. is $20
The commission for the $350 t.v. is $14
The commission for the $720 t.v. is $28.80
Next you add them all to get above answer
Also, to find commission you multiply the price by commission rate in decimal form