3 years ago

5x-(x+3)=1/3(9x+18)-5

Mathematics

2 answers:

Xelga [282]3 years ago

6 0

Answer: x=4

Step-by-step explanation:

Neko [114]3 years ago

3 0

The answer is 4 once simplified in

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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

A shirt boutique purchased 100 new shirts for $1072. The short-sleeved shirts cost $10 each and the long-sleeved shirts cost $12

Scilla [17]

Answer:

one equation would be S+ L=36for the number of shirts sold.

4 0

3 years ago

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A classroom has stadium seating. There are 10 seats in the first row, 13 seats in the second row, 16 seats in the third row and

Nikolay [14]

The right answer is “The classroom has 5,180 seats “

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3 years ago

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svetoff [14.1K]

Answer:

I'm sorry i dont think i understand what do u need help with

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP<br><br> What is the value of x?

KonstantinChe [14]

Side JL is 4√2 recall that in a 30-60-90 right triangle the hypotenuse is 2 times the size of the short leg.

JL also serves as the hypotenuse of the 45-45-90 triangle JML. The ratio of side lengths in this triangle is 1:1:√2

So we can see that the value of x = 4

7 0

3 years ago