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Inga [223]
3 years ago
13

Factor this expression completely x^2 - 9

Mathematics
1 answer:
tekilochka [14]3 years ago
8 0
x^2-9=(x-3)(x+3)
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Find the slope of the line that passes through (10, 7) and (2, 2).
FinnZ [79.3K]

Answer:

I think 8/5

Step-by-step explanation:

from X=2 to X=10 its 8 spaces and from Y=2 to Y=7 its 5 spaces, not 100% sure of this but seems right. :)

6 0
3 years ago
Factor completely 3x^4 - 3x ^3 - 18x ^2. Which of the following is one of the factors?
Otrada [13]

Answer:

3x^4 - 3x ^3 - 18x ^2=3x^2(x+2)(x-3).

Step-by-step explanation:

The expression 3x^4 - 3x ^3 - 18x ^2 consists of three terms:

  1. 3x^4;
  2. -3x^3;
  3. -18x^2.

These three terms have common factor 3x^2. Thus,

3x^4 - 3x ^3 - 18x ^2=3x^2(x^2-x-6).

Consider the expression x^2-x-6. You can rewrite it as

x^2-x-6=x^2+2x-3x-6=x(x+2)-3(x+2)=(x+2)(x-3).

The whole expression takes look

3x^4 - 3x ^3 - 18x ^2=3x^2(x+2)(x-3).

7 0
3 years ago
Two more than 5 times a number is greater than or equal to 3
jenyasd209 [6]

Answer:

n ≥ 1/5

Step-by-step explanation:

Let the number be n.  Then 5n + 2 ≥ 3.

If you want to solve this for n, then subtract 2 from both sides, obtaining:

5n ≥ 1.  Isolate n by dividing both sides by 5.  Then we have   n ≥ 1/5

3 0
4 years ago
What's the answer please and thank you ​
topjm [15]

Where's the question??

7 0
3 years ago
Read 2 more answers
a number rounded to the nearest hundred thousand is 400,000. The same number rounded to the nearest ten thousand is 350,000. Wha
spayn [35]

Answer:

360000

Step-by-step explanation:

Well, we know the number must be above 350,000 because it was rounded up to 400,000. In order for the number to round down to 350,000 the number would have to be between 350,000-354999. So, the number could be any number in between those two numbers.

For example: The number COULD be 351,000 but, that is not the only possible answer.

but the answer would be 360000.

4 0
3 years ago
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