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Yakvenalex [24]
3 years ago
8

Evaluate the piecewise function below for f(3):

Mathematics
1 answer:
gregori [183]3 years ago
8 0
F(3)={2(3)-9}
F(3)={6-9}
F(3)={-3}
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I need help asap first answer gets brainly
LuckyWell [14K]

Hey there! I'm happy to help!

The domain is any possible number you can input into the function to get a real output. The domain of h just means the domain of this entire function, which is called h.

Let's look at the answer options.

OPTION A

All real values of x such that x≠0.

The only way to make it so that we do not have a real output is if we get a negative square root. You cannot multiply any number by itself to get a negative number unless you use imaginary numbers, but using imaginary numbers makes our output not real.

Anyways, plugging in 0 would give us √-10, which is not a real number. That part is correct, but this option says ALL REAL NUMBERS except for 0. The problem is is that we can take any number less than ten and plug it in and we would get a negative square root, a fake number. So, this option is incorrect.

OPTION B

All real values of x such that x≥10.

Let's say we use 10 for our x and plug it in. This gives us √0, which is 0, a real output. Anything bigger than this 10 will give us a real output as well, so this option is correct.

We don't even need to check the other options because we have already found the correct answer. C,D, and E are all incorrect though because they include values less ten, which would give us a negative square root, a fake number.

I hope that this helps! Have a wonderful day!

8 0
3 years ago
Why is 1/8 cup equal to 1 fluid ounce
guapka [62]

Answer:

because there are 8 fluid ounces in a cup

Step-by-step explanation:

1/8 of cup = 0.125 cup = 1 fluid ounce

2/8 of cup = 0.25 cup = 2 fluid ounce

3/8 of cup = 0.375 cup = 3 fluid ounce

4/8 of cup = 0.5 cup = 4 fluid ounce

5/8 of cup = 0.625 cup = 5 fluid ounce

6/8 of cup = 0.75 cup = 6 fluid ounce

7/8 of cup = 0.875 cup = 7 fluid ounce

8/8 of cup = 1 cup = 8 fluid ounce

hope i helped

5 0
3 years ago
This graph shows a proportional relationship.
Kamila [148]

Answer:

The constant of proportionality is 0.3, or K=0.3.

Step-by-step explanation:
The chart I attached shows points that are plotted on the proportional line. In order to find the constant of proportionality from these points, you have to divide the amount of change by the number of years. For example, 3 divided by 10 or 6 divided by 20. This results in 0.3, which means that every year, there is 0.3 centimeters of change in the sea level.

8 0
3 years ago
What is the slope of the line whose equation is 5y=x-3
zlopas [31]

Answer:

the slope is 1/5

Step-by-step explanation:

5y=x-3

divide by 5

y = 1/5 x - 3/5

the slope is 1/5 and the y intercept is -3/5

6 0
3 years ago
if x = 2 and y = 1 what is the expression of 3(y-1)+2x2 ( it’s not actually 2x2 the 2 is small i don’t remember what it’s called
MAXImum [283]

Answer:

substituting the given values we get,

3(1-1)+2*2

using bodmas we get

3(0)+2*2

0+2*2

0+4

4

therefore the answer is 4,thank you and mark the answer as brainliest if u find my answer helpful

4 0
3 years ago
Read 2 more answers
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