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Debora [2.8K]
2 years ago
13

Without graphing, determine the x-intercepts and vertex of the quadratic function f(x)=x²+11x+18. Show all of your work.

Mathematics
1 answer:
romanna [79]2 years ago
5 0

Answer: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:standard-form-quadratic/v/ex3-completing-the-square

Step-by-step explanation: This will help you a lot

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420 miles In 6 hours
Irina18 [472]

Answer:

yeah me too

Step-by-step explanation:

6+36

6 0
4 years ago
I NEED THIS ASAP <br><br> 108.8 is 170% of what number?<br><br> PLEASE HELP!
8090 [49]
64.

Explanation:

108.8 divided by 170% or 1.7 is equal to 64.
7 0
3 years ago
How do you solve 8n squared+4n-16= -n squared using the quadratic formula?
klemol [59]
8n² + 4n - 16 = -n²
8n² + n² + 4n - 16 = -n² + n²
9n² + 4n - 16 = 0
n = <u>-4 +/- √(4² - 4(9)(-16))</u>
                     2(9)
n = <u>-4 +/- √(16 + 576)</u>
                   18
n = <u>-4 +/- √(592)
</u>              18
n = <u>-4 +/- 24.33</u>
              18
n = -<u>4 + 24.33</u>        n = <u>-4 - 24.33</u>
             18                           18
n = <u>20.33</u>                n = <u>-28.33</u>
         18                            18
n = 1.1294              n = -1.57389
<u />
3 0
3 years ago
PLS HELPPP MATHHH QUESTIONSSS REWARD BRAINLIEST AND STARS!!!!!!!!
CaHeK987 [17]
151 is a prime number, 616 prime factorization is 2^3 times 7 times 11, the gcf of 132 & 220 is 44, the prime factorization of 104 is 2^3 time 13, the the gcf for 333 & 441 is 9
8 0
3 years ago
2. Susan works as a secretary in an accounting firm. Her hourly rate is $13.50, and her regular
umka2103 [35]

Step-by-step explanation:

$13.50 per hour. 40 hours per week.

that makes her regular weekly income

40×13.5 = $540.00

in that particular week she had 8 his overtime in addition.

the overtime hourly rate is

13.5 × 1.5 = $20.25

so, she earned an additional

8×20.25 = $162.00

therefore she earned in that week in total

540 + 162 = $702.00

5 0
3 years ago
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