Plzzzzzzz help me with #1,2,3
1 answer:
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Answer: c)
Step-by-step explanation:
This can be done through trial-and-error. Use the pythagoreas' theorem and if the left side of the equation is equal to the right, that is the answer.
(Do take note that c is the longest side.)
a)
Since , a) is wrong.
b)
Since , b) is wrong.
c) (answer)
Since , c) is correct.
d)
Since , d) is wrong.
and h(x)= 2x-8
g o h is a composition function
First we find g o h
g o h is g(h(x))
We plug in h(x) in g(x)
We replace x with 2x-8 in g(x)
To find domain we look at the domain of h(x) first
Domain of h(x) is set of all real numbers
now we look at the domain of g(h(x))
Negative number inside the square root is imaginary. so we ignore negative number inside the square root
So to find domain we set 2x - 12 >=0 and solve for x
2x - 12 >=0
add both sides by 12
2x >= 12
divide both sides by 2
x > = 6