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3 years ago

Solve =x^2−4, where x is a real number. Simplify your answer as much as possible.

Mathematics

1 answer:

Dmitrij [34]3 years ago

4 0

Answer:

x=-2 and 2

Step-by-step explanation:

x^2-4=0

(x-2)(x+2)=0

x=-2 and 2

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Evaluate the function rule for the given value. y=15*3^x for x = -3

DENIUS [597]

Answer: $y=\frac{5}{9}$

Step-by-step explanation:

It is important to remember that an Exponential function has the following form:

$f(x) =a* b^x$

Where “b” is $b > 0$ and $b \neq 1$ , "a" is a coefficient, "x" is the Independent variable and f(x) is the Dependent variable.

In this case, you have the following Exponential Function given in the exercise:

$y=15*3^x$

If the value of Dependent variable is -3, then:

$x=-3$

So, you must substitute that value of "x" into the function:

$y=15*3^{(-3)}$

And now you must evaluate:

1. According the Negative exponent rule:

$a^{-n}=\frac{1}{a^n}$

Then:

$y=\frac{15}{3^{3}}$

2. Simplifying, you get:

$y=\frac{15}{27}\\\\y=\frac{5}{9}$

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3 years ago

The Sugar Sweet Company is going to transport its sugar to market. It will cost $5400 to rent trucks, and it will cost an additi

mash [69]

F(x) = 200x + 5400 is the equation

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3 years ago

95,90,85,40,100,100,95,100,85,90 most closely? The mode the range the median the mean

melamori03 [73]

Answer:

Total Numbers in Set:

Mean (Average):

Median (Middle):

(90+95)/2 = 92.5

Mode (Most Common):

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Range (Biggest - Smallest):

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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