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kykrilka [37]
2 years ago
14

Which statement about y = x2 + 3x - 18 is true?

Mathematics
1 answer:
Anestetic [448]2 years ago
4 0

Answer:

C

Step-by-step explanation:

first of all, the correct factorization is

y = (x - 3)(x + 6)

because when we do the multiplication

y = x² + 6x - 3x - 18 = x² + 3x - 18

and then, the factorization tends us also directly the zero points, because y is only 0, when one of the factors is 0.

so, either x-3 or x+6 has to be 0 to make the whole expression 0.

and that is only for x=3 or x=-6

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Colt1911 [192]

Answer:

A. 5 1/2 and D. 11/2

Step-by-step explanation:

Make improper fraction

8*1+3=11/8

Solve by multiplying:

4*11/8

44/8

Simplified is 11/2

We can turn it back into a mixed number

2*5+1=11 so 5 1/2

6 0
3 years ago
SOMEONE PLEASE HELP<br><br><br>and please explain it so I won't get confused further on ​
Pavlova-9 [17]
Number 5 is 110 degrees because it is the same angle as m<2.

Now, to find m<7
A straight line is 180 degrees. One side is already given. m<8+m<7 = 180 degrees. So 180-110=70.

Answers:
4. m<7= 70 degrees

5. m<8= 110 degrees

3 0
2 years ago
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snow_lady [41]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How do you find the product of -2(3.1)
Alexxandr [17]

Answer:

- 6.2

Step-by-step explanation:

The product of - 2 (3.1) is - 6.2.

Brackets mean to multiply so we have to multiply the - 2 by 3.1 which gives a result of - 6.2.

5 0
3 years ago
Record this number in standard form: twenty-five thousand, four hundred fifty
bogdanovich [222]

Hi!

  • 25 thousand
  • 4 hundred
  • 50
<h3>25,000 + 400 + 50 = 25,450</h3><h2>The answer is 25,450</h2>

Hope this helped you! :)

-Peredhel

4 0
3 years ago
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