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ankoles [38]
3 years ago
15

A greenhouse that specializes in growing geraniums is divided into sections. The number of geranium pots in each section depends

on the number of sprinklers in that section.
There are x(7x − 2) pots of red geraniums and (x + 3)^2 pots of pink geraniums in a section with x sprinklers.

Which simplified expression represents the total number of red and pink geranium pots in a section with x sprinklers?
A. 8x^2 + 4x + 9
B. 8x^2 + 6x + 9
C. 8x^2 + 6x + 7
D. 8x^4 + 4x^2 + 9
Mathematics
2 answers:
ValentinkaMS [17]3 years ago
6 0
X(7x-2) = 7x^2-2x
(x+3)^2 = (x+3) (x+3) = x^2 + 6x +9

x^2 - 2x + x^2 + 6x +9 = 8x^2 + 4x + 9
lesantik [10]3 years ago
3 0

Answer: A, 8x^2+4x+9. Took the test

Step-by-step explanation:

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4 0
3 years ago
Solve for x: -5| x + 1| = 10 please help
wel

-5| x + 1| = 10

|x + 1| = -2

x + 1 = -2

x = -3


x + 1 = 2

x = 1

Answer

x = -3,  1

4 0
3 years ago
Read 2 more answers
How is this possible? x=(pi +3)/2
coldgirl [10]
Pi=3.14. X=(3.14+3)/2. X=6.14/2. X=3.07 :)
5 0
3 years ago
Please help +25 points
mestny [16]
The answer is D.
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8 0
3 years ago
The probability a person is infected by a certain cold virus is 0.2. If a random sample of 12 people is taken, what is the proba
mezya [45]

Answer:

   

Step-by-step explanation:

It is given that The probability a person is infected by a certain cold virus is 0.2 that is p=0.2, then q=1-0.2=0.8.

Now, we have to find the probability that at least one person will be affected by the cold virus, that is P(x>1).

P(x>1)=1-(P(x=0)+P(x=1))

=1-(nc_{x}p^xq^{n-x}+nc_{x}p^xq^{n-x})

=1-(12c_{0}p^0q^{12}+12c_{1}p^1q^{11})

=1-((0.8)^{12} +12(0.2)(0.8)^{11})

=1-(0.8+12(0.2))(0.8)^{11}

=1-(0.8+2.4)(0.0858)

=1-(3.2)(0.0858)

=1-0.274

=0.726

Thus, probability that at least one person will be affected by the cold virus will be=0.726.

3 0
3 years ago
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