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madam [21]
2 years ago
5

What is the factored form of this expression? 2x^3+5x^2+6x+15

Mathematics
1 answer:
Licemer1 [7]2 years ago
6 0

Answer: (2x+5)(x^2+3)

Step-by-step explanation:

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Mark's brother is five years or than mark. thier ages combinded adds up to 23. How old is mark
drek231 [11]

Answer:

18

Step-by-step explanation:

Mark is 18 years old.

6 0
2 years ago
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A. Use composition to prove whether or not the functions are inverses of each other. B. Express the domain of the compositions u
Kryger [21]

Given: f(x) = \frac{1}{x-2}

           g(x) = \frac{2x+1}{x}

A.)Consider

f(g(x))= f(\frac{2x+1}{x} )

f(\frac{2x+1}{x} )=\frac{1}{(\frac{2x+1}{x})-2}

f(\frac{2x+1}{x} )=\frac{1}{\frac{2x+1-2x}{x}}

f(\frac{2x+1}{x} )=\frac{x}{1}

f(\frac{2x+1}{x} )=1

Also,

g(f(x))= g(\frac{1}{x-2} )

g(\frac{1}{x-2} )= \frac{2(\frac{1}{x-2}) +1 }{\frac{1}{x-2}}

g(\frac{1}{x-2} )= \frac{\frac{2+x-2}{x-2} }{\frac{1}{x-2}}

g(\frac{1}{x-2} )= \frac{x }{1}

g(\frac{1}{x-2} )= x


Since, f(g(x))=g(f(x))=x

Therefore, both functions are inverses of each other.


B.

For the Composition function f(g(x)) = f(\frac{2x+1}{x} )=x

Since, the function f(g(x)) is not defined for x=0.

Therefore, the domain is (-\infty,0)\cup(0,\infty)


For the Composition function g(f(x)) =g(\frac{1}{x-2} )=x

Since, the function g(f(x)) is not defined for x=2.

Therefore, the domain is (-\infty,2)\cup(2,\infty)



8 0
3 years ago
Latoya has b decks of cards . Each deck has 52 cards in it , what is the expression for the total numbers of cards latoya has
Lerok [7]

Answer:

52b

Step-by-step explanation:

She has 52 cards per deck, and b decks.

This means she has 52b cards.

How this works:

For 1 deck, she has 52 cards, or 52×1 cards.

For 2 decks, she has 104 cards, or 52×1 cards.

For 5 decks, she has 260 cards, or 52×5 cards.

For 10 decks, she has 520 cards, or 52×10 cards.

Therefore, for b decks, she has 52×b, or 52b cards.

**This content involves writing algebraic expressions, which you may wish to revise. I'm always happy to help!

6 0
3 years ago
Sally needs to have some drywall and insulation work done in her house. She has received a quote from a professional drywall con
Leno4ka [110]
It said the correct answer was the contractor 
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3 years ago
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Simplify 3^2 x 3^4 x 3^6 A3^10 B3^12 C3^48 D3^0​
kvasek [131]

Answer:

\boxed{\sf\: B)\:3^{12}}

Step-by-step explanation:

\sf 3^2\times \:3^4\times \:3^6

<u>Apply exponent rule:</u>

\hookrightarrow \boxed{\sf a^b\times \:a^c=a^{b+c}}

  • \sf 3^2\times \:3^4\times \:3^6
  • \sf 3^{2+4+6}

Add the numbers:

  • \sf 2+4+6=12
  • \sf \:3^{12}

________________________________

7 0
2 years ago
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