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nekit [7.7K]
2 years ago
6

Which of the following represents an elementA O 2B H2OC CO2D NO2​

Mathematics
2 answers:
nataly862011 [7]2 years ago
8 0

Answer:

I believe the answer is O2

liberstina [14]2 years ago
3 0

Answer:

A. Correct

B. Incorrect

C. Incorrect

D. Incorrect

Step-by-step explanation:

B, C, and D are compounds rather than elements

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A rectangular area is to be fenced in with 300 feet of chicken wire. find the maximum area that can be enclosed.
GarryVolchara [31]
Let the lengths of the sides of the rectangle be x and y. Then A(Area) = xy and 2(x+y)=300. You can use substitution to make one equation that gives A in terms of either x or y instead of both.

2(x+y) = 300
x+y = 150
y = 150-x

A=x(150-x) <--(substitution)

The resulting equation is a quadratic equation that is concave down, so it has an absolute maximum. The x value of this maximum is going to be halfway between the zeroes of the function. The zeroes of the function can be found by setting A equal to 0:
0=x(150-x)
x=0, 150

So halfway between the zeroes is 75. Plug this into the quadratic equation to find the maximum area.

A=75(150-75)
A=75*75
A=5625

So the maximum area that can be enclosed is 5625 square feet.
6 0
3 years ago
What is 1/3 + 1/5 + 1/2
Shalnov [3]

Answer: 1.03333333333

Step-by-step explanation:

5 0
2 years ago
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Dylan invested $1800 in an scoping that pays 3.75% interest compounded annually. Assuming no deposits or withdrawals are made, f
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Answer:

2244.9

Step-by-step explanation:

Anually compound interest formula

PV(1+i)^t

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2244.9

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Stephen make blueberry pie and cuts it into 6 slice he eart 1/3 of the pie over the weekend how many slices of pie does Stephen
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2 slices! Hope that helps
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2 years ago
What angle relationship describes ∠UQR and ∠WRT?
sashaice [31]

Answer:

corresponding angles because it is in a F pattern shape

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