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3 years ago

Is the relation a function? Why or why not?

Mathematics

2 answers:

uranmaximum [27]3 years ago

5 0

Answer: A; No, the relation passes the vertical line test.

Step-by-step explanation:

Alex787 [66]3 years ago

4 0

Answer:

No; three range values exist for domain value 3.

Step-by-step explanation:

To be a function, every input should have a unique output

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The answer to 2288844267✖️5788838838

ozzi

Your answer is 1.3249751e+19

5 0

4 years ago

Read 2 more answers

Express in Simper Fom : y-x

AveGali [126]

Simplify

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Conditions for the existance of $E:$

$x\neq 0~~\text{ and}~~y\neq 0~~\text{ and }~~x\neq -y.$

(otherwise, the one of the denominators would be zero.)
____________________

Simplifying:

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Multiply both the numerator and the denominator by $xy:$

$E=\dfrac{xy\cdot \left(\frac{x}{y}-\frac{y}{x} \right )}{xy\cdot \left(\frac{1}{y}+\frac{1}{x} \right )}\\\\\\ E=\dfrac{\frac{xy\cdot x}{y}-\frac{xy\cdot y}{x}}{\frac{xy}{y}+\frac{xy}{x}}\\\\\\ E=\dfrac{x^{2}-y^{2}}{x+y}\\\\\\ E=\dfrac{(x+y)(x-y)}{x+y}$

Simplify common factors:

$E=x-y\\\\\\ \therefore~~\boxed{\begin{array}{c}\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}=x-y \end{array}}$

6 0

3 years ago

(5x + 4) + (-8x - 2)

LenaWriter [7]

Answer:

-3x + 2

Step-by-step explanation:

(5x + 4) + (-8x - 2)

= 5x + 4 -8x - 2

combine like terms

-3x + 2

6 0

3 years ago

Thomas paid $5 for a multicolor file folders. There were 100 folders in the box .what was the cost of each folder?

Vikentia [17]

Thomas paid $5 for 100 folders, to find cost of each folder:

5/100 = $0.05

Therefore, the cost of each folder was $0.05

Hope I helped :)

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3 years ago

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The function f (x )equals 1000 (0.5 )Superscript StartFraction x Over 30 EndFraction describes the amount, f(x), in kilograms,

andrew-mc [135]

Answer:

40 years after 1982, there is 396.85 kilograms of radioactive element remaining. The area will not be safe for human habitation by 2022.

Step-by-step explanation:

We are given the following in the question:

$f(x) = 1000(0.5)^{\frac{x}{30}}$

where f(x) is the amount of normal curve cannot be used as an approximation to the binomial probability. in kilograms x years after 1982.

We have to approximate f(40)

Putting x = 40, we get

$f(40) = 1000(0.5)^{\frac{40}{30}} = $$396.85$

Thus, 40 years after 1982, there is 396.85 kilograms of radioactive element remaining.

With 100 kilograms of radioactive material, the area is unsafe for humans.

Thus, the area will not be safe for human habitation by 2022.

8 0

3 years ago