03/02/23

Defining the Derivative and Using Derivative Notation
Find the tangent and normal line for the function: at x= -2.  Then graph the function and the tangent line.  Be sure to show all work and correct notation!! 
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03/02/23

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?
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02/27/23

What is the probability that a randomly selected teacher makes less than $53,000 per year?
The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large... more
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02/27/23

If the bacteria in a culture double in 4 hours, how many hours will it take before 3 times the original number is present?

It will take  ?  hours. (Answer should be accurate to within at least three digits.)
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02/27/23

If csc(x)=6, for 90degrees.....
If csc(x)=6, for 90°<x<180°, then Sin(x/2)=cos(x/2)=tan(x/2)=
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02/26/23

Working the Chain Rule
I am again trying to help my daughter with her college homework that is over my head. Any help for the following problem is appreciated. Find the equation of the tangent line to the graph of... more
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02/23/23

differentiate f(x) =2In(2x+5)-tan^-1(2x^2)+pi^2
Calculus I find the differentiate.
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02/22/23

Probability dice roll
A fair 6-sided die is rolled three times. What is the probability that all three rolls are 1? Write your answer as a fraction or a decimal, rounded to four decimal places.
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02/22/23

What is the reaction of Fe metal with ferric chloride?
What is the reaction of Fe metal with ferric chloride?
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02/22/23

Math problem, help pls!
Suppose you want to have $300,000 for retirement in 35 years. Your account earns 4% interest. How much would you need to deposit in the account each month?
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02/16/23

In a family of 5 children what is the probability of having one boy and then 4 girls in that order. Exclude multiple births and assume all outcomes are equal

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02/15/23

Mass to mass stoichiometry

For the reaction 2HNO3 + Mg(OH)2 —> Mg(NO3)2 + 2H2O how many grams of magnesium nitrate are produced from 1 gram of nitric acid HNO3
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02/15/23

The secant of an angle is sec(x)=13/5 what is its tangent?
The secant of an angle is sec(x)=13/5 what is its tangent?
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02/15/23

Concavity and The Second Derivative Test
Drug Concentration: The percentage of a certain drug in the bloodstream t hours after the drug is administered is given by...k(t) = 3t/t^2+4For example, after 1 hour the concentration is given... more
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02/15/23

equilibrium homework help
At equilibrium, a reaction vessel contains 4.50 atm of Br₂ and 1.10 atm of NBr₃. According to the reaction: 2 NBr₃ (g) ⇌ N₂ (g) + 3 Br₂ (g) Kp = 4.8 Determine the equilibrium partial pressure of N₂.
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02/15/23

Probability question

If one event has an 80% of occuring. Whats the probability of that event occuring if repeated 2,5,10 times. In other words if 5 events all with 80% probability of occuring ran simultaneously what... more
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02/14/23

are atoms mostly empty space

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02/14/23

Integrals and Functions of Time
There are two rival companies, Winner's Inc. and Loser's Co.. Winner's Inc.'s net worth is growing at a rate of 1/2 * t2 thousand dollars per month (i.e. t is measured in months). Loser's Co. is... more
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02/13/23

Five metal cubes with dies of 5 cm are melted and casted into a spherical ball. Find the volume of the sphere that is formed.
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02/13/23

Dice Probability help
What is the probability that in 10 casts of a fair die we get number six more than once?Does this problem use binomial distribution? If it doesn't then what does it use? Could it be explained please?
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02/13/23

Cards Probability help
In the game of poker, five cards are dealt. Recall the regular deck of cards has 13 denominations and 4 suits.What is the probability of getting 5 consecutive cards (i.e., from 2,3,4,5,6, all the... more
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02/13/23

determine the values of x such that y=x^2 and y=1/x have the same slope
only allowed to use the first principles definition for a derivative 😕
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02/13/23

(a) What is the radius of said orbit? (b) What parameters are conserved throughout the orbit? Calculate one of them
A satellite is inserted into a circular Earth orbit with period = 8 hours. Answer to part a) r = 20,307 kmAnswer to part b) specific energy = -9.8142 km^2/s^2 & specific angular momentum = 89,... more
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02/10/23

How quickly is the mass of the tree increasing?
A tree trunk is approximated by a circular cylinder of a height of 50 meters and a diameter of 4 meters. The tree is growing taller at a rate of 1 meter per year and the diameter is increasing at a... more
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02/10/23

Second derivative of parametric equation
Hi! I need help with the following problem:A particle moves in a plane according to the parametric equations x(t) = 1 + 3cost, y(t) = 3sin2t. Find  in terms of t.Answer choices:    I got an answer;... more
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