# Nick

Questions and answers by visitors named Nick

## Questions

1. ### If f(x) = sin(7 − 5x), find f′(π), which is the derivative at π:

−0.754 −0.657 0 0.657 3.770 I chose 0.657 ... I did not really get this exact answer, its just that while I was trying to figure this out my answer was actually 0.6978 but I just

4. ### In the questions below P(x,y) means “x and y are real numbers such that x + 2y = 5”.

a) Determine whether the statement ∃x∀yP(x,y) is true. b) Negate the statement ∃x∀yP(x,y).

7. ### From the position vs time graph of an object moving with constant acceleration,

how could you find the velocity

11. ### Given the following equation:

2KClO3---> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?

14. ### A spring has a spring stiffness constant, k, of 420 N/m .

1. How much must this spring be stretched to store 30 J of potential energy?

16. ### A person who is afraid of heights likely suffers from ( select all that apply )

a)anxiety b) a phobia c) obsessive-compulsive disorder d) an impulse control disorder Would Someone Please Help Me With The answer I Know One Is Phobia But I Don't Know The

17. ### At a swim meet, a parent is videotaping his son from a seat in the stands that is 20 meters past the starting line and 8 meters away from his son's lane. Let x represent the distance the son has swum.

a. Write x as a function of (theta). b. At what angle

20. ### Using separation of variables, solve the following differential equation with initial conditions dy/dx = e^(2x+3y) and y(0) = 1.

Hint: use a property of exponentials to rewrite the differential equation so it can be separated

22. ### Identical twins often have similar interests even if they were not raised together. This shows how ________ influences personality development

a) modeling b) a peer group c) environment d) heredity d would someone check this answer.

24. ### Yo fue al dentista la semana pasada

Pablo corrio el perro y su por parque ellos leyo periodicos tres cada dia Dona Rita supo la historia de nunca la verdad

29. ### If the fish population, p, in a lake can be modelled by the function p(t)=15(t^2+30)(t+8), where t is the time, in years , from now.

How do I determine the rate of change when the population when there are 5000 fish in the lake?

31. ### <b>Titanium metal has a body-centered cubic unit cell. The density of Titanium is 4.50 g/cm^3. Calculate the edge length of the unit cell and a value for the atomic radius of titanium.</b>

Ok, I know how to find the density using the atomic radius, but I'm

33. ### So not a question, but if y'all want to respond to this thread with your socials, then feel free. If not, I also understand, so I will put mine.

My name is Nicholas or Nick I'm in 10th grade, age 16, male student. With A's in all classes except one which is

38. ### Na2SiO3+8HF --> H2SiF6+2NaF+3H2O

How many moles of HF are needed to react with 0.30 moles of Na2SiO3

–5+13𝑖

44. ### Neon exists as a monatomic gas. There are 1.5 mols of neon in a light bulb at a temperature of 75 degrees Celsius.

a. what is the average kinetic energy of the neon atoms? b. what is the total kinetic energy of all of the atoms?

45. ### A certain cylindrical tank holds 20,000 gallons of water, which can be drained in 20 minutes. The volume V of water remaining in the tank after t minutes is given by the functioin

V(t)=20,000(1- (t/20))^2, where V is in gallons, t=0 represents the instant

46. ### Can you help me edit this essay?

"Should I just quit?” Is a question I keep asking myself as I try to learn a new trick. I always had a tendency to give up. I never seem to find the things that I’m good at. But after putting time and effort into the

48. ### All of these are possible postural deviations in the frontal plane EXCEPT (Multiple answers can be correct. Select all that apply):

A) Genu valgus B) Hip drop C) Genu Recurvatum D) Toe out E) All are in the frontal plane

93. ### Concentration vs Distance plots resemble _____________ .

Lognormal distribution Binomial distribution Lorentzian distribution Gaussian distribution

94. ### Change in Gibbs free energy is _____ related to interfacial energy and _____ related to radius of precipitate.

directly, inversely inversely, directly directly, directly inversely, inversely

95. ### Which of the following phase diagram shows liquid immiscibility ?

Eutectic Peritectic Monotectic Eutectoid None of these

98. ### The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X.

True - If you were to find the correlation coefficient with a given data set for x and y, it would have the same correlation coefficient value as y and

100. ### Alkaptonuria is a recessive trait. If tow parents are carriers(heterozygous, unaffected), what is the chance they would have:

A. 2 children, both with alkaptonuria? B. 3 children, all 3 not having alkaptonuria? C. 5 children, the first 3 not having