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3 years ago

If f(x)=3x^2-9 and g(x)=x^2+1 find (f+g)(x)

Mathematics

1 answer:

givi [52]3 years ago

5 0

Answer:

4x^2 -8

Step-by-step explanation:

f(x)=3x^2-9

g(x)=x^2+1

(f+g)(x)=3x^2-9 +x^2+1

Combine like terms

= 4x^2 -8

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2 years ago

One card is randomly selected from a deck of cards find the odds against drawing a seven

Stella [2.4K]

Answer:

$\frac{3}{4}$

Step-by-step explanation:

Probability of getting a 7 + Probability of not getting a 7 = 1.

Odds against drawing a 7 = Probability of not getting a 7.

We could calculate the probability of getting a 7 and subtract 1 from it to get the answer.

There a four sevens in a deck of card, one of each kind.

Probability of getting a 7 = $P(7) = \frac{4}{52} = \frac{1}{13}$

$\implies P(not \hspace{1mm} getting \hspace{1mm} a \hspace{1mm} 7) = 1 - P(7)$

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3 years ago

What is the slope of the line

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Step-by-step explanation:

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3 years ago

For each value of determine whether it is a solution to 2x - 7 = -23

Fantom [35]

Answer:

x = -8

Step-by-step explanation:

-23 + 7 = -16

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2 years ago

The sum of positive integers x and y is 246, and x/y = 5. What is the value of y?

Kobotan [32]

X=205 y=41 You come across these answers by making an equation or system of equations based on the word problem given. 1. x+y=246 and 2. x÷y=5 . The you would multiply by y on both sides and get x=5y . Then you would substitute for x in the first equation and get (5y)+y=246 . Then you would get 6y=246 . Them you would divide by 6 on both sides and get y=246÷6 . Then you would get y=41. Then you would plug the y value into the first equation. You would get that x+(41)= 246, subtract on both sides and get x=246-41, then you would get an answer of x=205.

4 0

3 years ago