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