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3 years ago

What is x•9+9•12 if x equals 2

Mathematics

1 answer:

polet [3.4K]3 years ago

3 0

$2\cdot9+9\cdot12=18+108=126$

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Which is equivalent to this expression (z+6)(2z^2+3z+5)

iVinArrow [24]

(z + 6)(2z^2 + 3z + 5) = z(2z^2 + 3z + 5) + 6(2z^2 + 3z + 5) = 2z^3 + 3z^2 + 5z + 12z^2 + 18z + 30 = 2z^3 + 15z^2 + 23z + 30

5 0

3 years ago

The value of a house increases by 20% each year.

wel

Answer:

a. $28,800

b. $16,000

Step-by-step explanation:

20,000 * 20% = 4,000

so thats how much more it will be next year

add that together

20,000 + 4,000 = 24,000

so thats one year from now and we have to find two

multiply 20% times next years value

24,000 * 20% = 4,800

so add that to 24,000

24,000 + 4,800 = 28,800

so in two years the value will be $28,800

20,000 * 20% = 4,000

so thats how much less it was worth one year ago

so you have to subtract it

20,000 - 4,000 = 16,000

so it was worth $16,000 one year ago

5 0

3 years ago

An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seat

Nezavi [6.7K]

Answer:

1170

Step-by-step explanation:

start with 10 and add 2 to each row. Then add each number up when you have 30 numbers.

10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44, 46,48,

50,52,54,56,58,60,62,64,66,68.

You get 1170 seats total.

I know there is a type of equation that can be used but I wanted to be 1000 percent sure of my answer to you to be correct.

8 0

3 years ago

Suppose that g(x) = f(x) + 3. which statement best compares the graph of g(x) with the graph of f(x)?

otez555 [7]

Answer:

C. the graph of g(x) is shifted 3 units up.

Step-by-step explanation:

The statement that compares the graph of g(x) with the graph of f(x) is that the graph of g(x) is shifted 3 units up.

If we have the equation:

G(x) = F(x) + 3

Then, the graph of G(x) will be composed of points 3 units above the graph of F(x).

Conversely, the difference between F(x) and G(x) at any particular value of x will always be 3.

8 0

4 years ago

Read 2 more answers

9) 2n - 14=4n + 4n<br> what’s the answer

Artist 52 [7]

The answer is

n = -7/3 or -2.333

6 0

4 years ago