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scZoUnD [109]
3 years ago
14

What are the square roots of the equation x^2 + 6x - 9 = 0? PLEASE HELP!!!

Mathematics
1 answer:
pogonyaev3 years ago
3 0
X^2+ 6x - 9 = 0

Use the quadratic formula
x = (<span><span>−b± sqrt (<span>b^2−4ac​</span></span>​)) / 2a
</span>
a =  1
b = 6
c = -9

x = −6± sqrt (6^2−4(1)(-9​​) / 2(1)
x = (−6± sqrt(72))/2

so these are your two solutions to the equation
x = 1.243
x = -7.243

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The quotient of x and 9 is less than 27.
Vera_Pavlovna [14]

Answer:

x/9 < 27

x < 27(9)

x < 243

Step-by-step explanation:

3 0
3 years ago
Admission for a movie is $8 for children and $12 for adults. On a certain day, 3200 people attend the movie theater and $33,040
Nezavi [6.7K]
Let us assume the number of children attending the movie = x
Let us also assume the number of adults attending the movie = y
Cost of admission for a children in the movie = $8
Cost of admission of an adult in the movie = $12
Number of people going to the movie on a certain day = 3200
Total amount collected from the movie theater = $33040
Then
x + y = 3200
And
8x + 12y = 33040
2x + 3y = 8260
Let us first take the equation
x + y = 3200
x = 3200 - y
Now we will put the value of x in the equation
2x + 3y = 8260
2(3200 - y) + 3y = 8260
6400 - 2y + 3y = 8260
y = 8260 - 6400
   = 1860
Now we will put the value of y from the above deduction in the equation
x + y = 3200
x + 1860 = 3200
x = 3200 - 1860
   = 1340
So the number of children going to the movie theater is 1340 and the number of adults going to the movie theater is 1860.
5 0
3 years ago
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Write a 4 digit number that has no zeroes and is divisible by 5 and 9
Hunter-Best [27]

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Step-by-step explanation:

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25% is the answer.
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