2 years ago

Quick question. solve for x. show all work

Mathematics

2 answers:

kkurt [141]2 years ago

6 0

75.................................

Ipatiy [6.2K]2 years ago

6 0

75 Because someone said so

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You were given the polynomial f(x)=3x^3+13x^2+19x+k and you know that f(-2)=0find k

eduard

Answer:

k = 10

Explanation:

The initial polynomial is:

$f(x)=3x^3+13x^2+19x+k$

If f(-2) = 0, then when we replace x by -2, the result will be 0. It means that we can write the following equation:

$\begin{gathered} f(-2)=3(-2)^3+13(-2)^2+19(-2)+k=0 \\ 3(-2)^3+13(-2)^2+19(-2)+k=0 \end{gathered}$

Therefore, we can solve for k as follows:

$\begin{gathered} 3(-8)+13(4)+19(-2)+k=0 \\ -24+52-38+k=0 \\ -10+k=0 \\ -10+k+10=0+10 \\ k=10 \end{gathered}$

So, the value of k is 10

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1 year ago

You are dealt one card from a standard 52-card deck. Find the probability of being dealt an ace or a 6.

Ainat [17]

Answer:

2/13

Step-by-step explanation:

Since there's 4 of each card in the deck this means that there're 4 sixes and 4 aces, so 8 cards in a 52 card deck gives the problem 8/52 which equals 2/13

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3 years ago

Solve the following equation then place the correct number in the box provided. X/3 - 4 = 10

ivann1987 [24]

X = 42

x/3 - 4 = 10
+ 4 +4
x/3 = 14
•3 •3
x = 42

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3 years ago

A car can average 140 miles on 5 gallons of gasoline. Write any equation for the distance d in miles the car can travel on g gal

ser-zykov [4K]

d=28g I might be wrong, but we can find this by dividing 140 by five, which equals 28.

7 0

3 years ago

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What do the following two equations represent?

Dima020 [189]

Answer:

rgjk j nfkkduejf nckcoc

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3 years ago