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Aleonysh [2.5K]
3 years ago
15

What are the factors of x2 – x – 6? Check all that apply.

Mathematics
2 answers:
Sergio [31]3 years ago
7 0

Answer:

x - 3

x + 2

Step-by-step explanation:

telo118 [61]3 years ago
4 0
X² -x -6 = (x -3)(x +2)

The factors are ...
  x - 3
  x + 2
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This is a proportion. What is the value of X?
Verizon [17]

Answer:

x = 15 or x = - \frac{2}{5}

Step-by-step explanation:

Cross- multiplying gives

(14x + 6)(17x + 5) = 9x(27x + 11) ( expanding factors )

238x² + 172x + 30 = 243x² + 99x

rearrange into standard form : ax² + bx + c = 0

5x² - 73x - 30 = 0 ← in standard form

consider the factors of the product 5 × - 30 = - 150 which sum to the coefficient of the x-term (- 73 )

the factors are - 75 and + 2

Use these factors to split the middle term

5x² - 75x + 2x - 30 = 0 ( factor by grouping )

5x(x - 15) + 2(x - 15) = 0 ← take out the factor (x - 15)

(x - 15)(5x + 2) = 0

equate each factor to zero and solve for x

x - 15 = 0 ⇒ x = 15

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7 0
3 years ago
What is 289% as a decimal
lakkis [162]

Answer:

the answer is 2.89

Step-by-step explanation:

u divide 289 to 100 or 289/100=2.89

hope this helps

4 0
3 years ago
Read 2 more answers
Solve the following word problem: Kay made 5 less phone calls today than Stephanie. If together they made 21 calls, how many cal
professor190 [17]
Answer:
Kay made 8 phone calls
Stephanie made 13 phone calls

Explanation:
Assume the number of phone calls that Stephanie made is x.
We are given that:
Kay made 5 phone calls less than Stephanie.
This means that:
Kay made x-5 phone calls

We know that the total number of phones is 21.
This means that:
21 = x + x - 5

Now we solve for x as follows:
21 = x + x - 5
21 = 2x - 5
2x = 26
x = 26/2
x = 13

This means that:
Stephanie made x = 13 phone calls
Kay made x - 5 = 13 - 5 = 8 phone calls

Hope this helps :)
5 0
3 years ago
Your science grades are weighted as follows: 35% for tests, 25% for journals, 25% for homework, and 15% for chapter projects. Wh
nexus9112 [7]

Answer:

Third option.

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3 years ago
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Difference between real numbers and intergers​
Greeley [361]

Answer:

REAL NUMBER - real number is union of rational and irrational numbers .... whole numbers, natural numbers, integers, rational and irrational numbers are included in real numbers.

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whole numbers, such as 3, 4, but not 3.6 or √4 .

I hope you understand the difference between real numbers and integers.......

4 0
2 years ago
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