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Lina20 [59]
3 years ago
8

Factor x3 + 2x2 – 9x – 18, given that –2 is a zero.

Mathematics
1 answer:
Lilit [14]3 years ago
3 0
To factor by a binomial, I like to use synthetic division (You can use long division but it is more work).


We are actually given a binomial because if -2 is a zero, the binomial is represented by (x- (-2)) or (x+2)

To use synthetic division,

-2 | 1  2  -9  -18
         -2   0   18
____________
      1  0  -9    0

Therefore, you know the constants of the equation which is equal to

1x^2 +0x -9x +0

x^2-9x

The full equation is equal to (x+2)(x^2-9x)
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Answer:

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Step-by-step explanation:

We are given the following in the question:

"A temperature in kelvin is 273.15  greater than the temperature in degrees Celsius."

We have to write an equation that relates temperature K in Kelvin to temperature C in Celsius.

According to the given relation, we can write the equation:

K = C + 273.15

is the required equation that provides a relation between temperature in Kelvin and temperature i Celsius.

3 0
3 years ago
What is the area to this figure?​
Tresset [83]

Answer:

21 ft^2

Step-by-step explanation:

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7 0
4 years ago
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At midnight what temperature is -6C. At midday the temperature is -9C. By how much did the temperature rise ?
Zielflug [23.3K]

Answer:

It didn’t go up, it went down 3 degrees

Step-by-step explanation:

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Rectangle VWXY is dilated by a scale factor of 2 to form rectangle V'W'X'Y'. Side X'Y'
posledela

9514 1404 393

Answer:

  11

Step-by-step explanation:

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8 0
3 years ago
Answer with work please
Lilit [14]
5 times 12=x times 4
switch sides- x times 4= 5 times 12
x times 4=60
x times 4        60
--------------   =  ------
4                       4
x=15

Hope this helps!! Feel free to thanks me, rate me 5/5 and make me brainliest!!
3 0
4 years ago
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