Answer:
Part 1)
A
Part 2)
C
Step-by-step explanation:
1)
We are given:

And that:

And we want to now for which values of x is h(x) undefined.
So, by substitution:

Remember that for rational functions, the function will be undefined if and only if the denominator is 0.
This is because we cannot divide by 0.
So, to find the values for which the denominator is 0, set the denominator to 0 and solve for x. Therefore:

Add 9 to both sides:

Take the square root of both sides. Since we are taking an even-root, we will need plus/minus. Therefore:

So, h(x) is undefined for ±3.
Our answer is A.
2)
We are given:

And we want to find:

So:

Distribute:

Combine like terms:

Rewrite:

Factor out:

So, our answer is C.
Answer:
The last one is the answer.
Take the unknown number as 'y'.
=》33% = 33/100
=》1.45 = 145/100
33/100 × y = 1.45
33/100 × y = 145/100
33y = 145/100 × 100/1
33y = 145
y = 145/33
y = 4.39
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RainbowSalt2222 ☔
Answer:
3 is the co-efficient of x and 2 is the constant.
Step-by-step explanation:
I use it all the time, but as my profession is engineering, mathematics is integral in my everyday life. I usually do it when evaluating for the magnitude of vector force components. Usually in 2D space, so Pythagorean theorem is quite useful.