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3 years ago

Is it a function and domain and range: {(2,-4),(6,-2),(4,-2),(5,-4,(-8,-6)}

Mathematics

1 answer:

svlad2 [7]3 years ago

4 0

9514 1404 393

Answer:

yes, it is a function

domain: {-8, 2 ,4, 5, 6}

range: {-6, -4, -2}

Step-by-step explanation:

The domain is the set of first values of the ordered pairs: {2, 6, 4, 5, -8}. We often like to see them in order:

domain: {-8, 2 ,4, 5, 6}

The range is the set of second values of the ordered pairs.

range: {-6, -4, -2}

There are no repeated values in the domain, so the relation is a function.

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2/10 reading, 7/10 experiments, what is the fraction of time left ?

BlackZzzverrR [31]

Total time = 10/10

So time left = 10/10 - 2/10 - 7/10

= 10/10 - 9/10

= 1/10 (answer)

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3 years ago

Read 2 more answers

A certain culture of year increases by 50% every three hours. A scientist places 9 grams of yeast in a culture dish. Write the e

miskamm [114]

Answer: a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

Step-by-step explanation:

Since we have given that

Number of grams of yeast in a culture dish initially = 9 grams

According to question, a certain culture of year increases by 50 % every three hours.

So, the explicit formula will be

$f(x)=9(1+\frac{50}{100})^{3x}\\\\f(x)=9(1+0.5)^{3x}\\\\f(x)=9(1.5)^{3x}$

And the recursive formula will be

$f(x)=9(1.5)^{3x}\\\\f(x+1)=9(1.5)^{3(x+1)}\\\\f(x+1)=9(1.5)^{3x+3}\\\\f(x+1)=9(1.5)^{3x}.(1.5)^3\\\\f(x+1)=f(x)\times 1.5^3$

Hence, a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

6 0

3 years ago

A new car is purchased for 16600 dollars. The value of the car depreciates at 9.75% per year. What will be the value of the car

ipn [44]

The value of the car after 8 years is $ 3652

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3 years ago

Can someone help me?

loris [4]

Answer:

i do not know srry

Step-by-step explanation:

i think u should try and solve it with a better teacher

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3 years ago

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TiliK225 [7]

Answer:

122 employees

Step-by-step explanation:

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3 years ago