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3 years ago

Use the ratio table to solve the percent problem.

Mathematics

2 answers:

mafiozo [28]3 years ago

8 0

Answer:

30% of 50 is 15

FromTheMoon [43]3 years ago

5 0

30% of 50 is 15 i really hope this helps if I am wrong plz dont get mad but have a great day!

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8. What is the domain of <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7Bx%5E%7B2%7D%20%2B20x%2B75%7D" id="TexFormula1" title

antiseptic1488 [7]

Answer:

8. Domain: (-∞, -15) ∪ (-15, -5) ∪ (-5, ∞)

9. Domain: [7/13, ∞)

Range: [1, ∞)

Step-by-step explanation:

Question 8

Given rational function:

$f(x)=\dfrac{x}{x^2+20x+75}$

Factor the denominator of the given rational function:

$\implies x^2+20x+75$

$\implies x^2+5x+15x+75$

$\implies x(x+5)+15(x+5)$

$\implies (x+15)(x+5)$

Therefore:

$f(x)=\dfrac{x}{(x+15)(x+5)}$

Asymptote: a line that the curve gets infinitely close to, but never touches.

The function is undefined when the denominator equals zero:

$x+15=0 \implies x=-15$

$x+5=0 \implies x=-5$

Therefore, there are vertical asymptotes at x = -15 and x = -5.

Domain: set of all possible input values (x-values)

Therefore, the domain of the given rational function is:

(-∞, -15) ∪ (-15, -5) ∪ (-5, ∞)

---------------------------------------------------------------------------------

Question 9

Given function:

$f(x)=\sqrt{13x-7}+1$

Domain: set of all possible input values (x-values)

As the square root of a negative number is undefined:

$\implies 13x-7\geq 0$

$\implies 13x\geq 7$

$\implies x\geq \dfrac{7}{13}$

Therefore, the domain of the given function is:

$\left[\dfrac{7}{13},\infty\right)$

Range: set of all possible output values (y-values)

$\textsf{As }\:\sqrt{13x-7}\geq 0$

$\implies \sqrt{13x-7}+1\geq 1$

Therefore, the range of the given function is:

[1, ∞)

8 0

2 years ago

I will give brainiest to whoever answers correctly !!

777dan777 [17]

Answer:

The finance charge is 23,028

Step-by-step explanation:

I think you just are supposed to just add and multiply in this case

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3 years ago

Can someone help me with this question?

Karolina [17]

Answer:

Step-by-step explanation:

2 x 2 = 4 x PI = 12.56

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3 years ago

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Please answer I will mark brainliest

77julia77 [94]

Answer:

3,466.32

Step-by-step explanation:

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2 years ago

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19.43 as a mixed number.

WARRIOR [948]

19 and 43/100................

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3 years ago