05/23/22

Question 10 on Precalculus

f(x)=x^3+3x^2-9x+5Math problem on pre calc

05/22/22

Can someone please answer this

Write the balanced chemical equation for the reaction between carbonic acid and copper (II) hydroxide.Start by writing the proper names of the products below.Carbonic acid + Copper (II)... more

05/18/22

Consider the series ∞Σn=1 1/n(n+1) Write the series using sigma notation. and 

Write down the first four terms in the sequence of partial sums, and then find the exact formula for the N-th partial sum.Use the exact formula to determine if the series converges or diverges. If... more

05/12/22

Approximate the area under the curve

Approximate the area under the curve y=2x from x=3 to x=5 using a Right Endpoint approximation with 4 subdivisions.

05/11/22

Can someone please answer this question

A steel tank contains a mixture of Ar and He gases. The total pressure in the tank is 4818 mmHg. If the partial pressure of helium in the tank is 1653 mmHg, what is the partial pressure of argon in... more

Calculus Question

I have created a scatter plot and the exponential function I found is y = 30e-0.004t. I need help solving the rest of the questions. A brief explanation of each part will also suffice.Codeine... more

05/03/22

Acid pKa of heart medicine

A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak... more

05/03/22

Find the relative growth rate

A common inhabitant of human intestines is the bacterium Escherichia coli. A cell of this bacterium in a nutrient-broth medium divides into two cells every 20 minutes. The initial population of a... more

04/26/22

Decide whether or not the given integral converges

Note: You may need to assume the fact that lim M→+ ∞ Mne−M = 0 for all n.Decide whether or not the given integral converges-4∫1/x^2dx-∞(a)Is the integral a convergent or divergent?(b)If the... more

07/31/18

Integration

A particular moves on x-axis so that its position at time t is s(t)= (t2-t)/ t-1. at what value(s) of t the velocity is zero?

09/18/17

Simplify the following expression. ​g(F(f(x)))

Let f(x)=x2-8, g(x)=x3, and F(x)=  1                                                x−1. Simplify the following expression.g(F(f(x)))

02/07/17

calculus. How to integrate?

Evaluate the definite integral. The boundary is from 0 to √3/5   ∫ 1/(1+25x2) dx

02/07/17

Calculus. How to solve integrals?

Find the indefinite integral   ∫ (e2x)/(25+e4x) dx

11/14/16

Wht the word problem answer?

matthew made a bookcase,the cost of making the bookcase was $647.50.after the book case is sold, the shopkeeper recieves 15% of the selling price, Matthew make profit of $160 , calculate the... more

11/13/16

Bus. Calc dimensions

For reasons too complicated to explain, I need to create a rectangular orchid garden with an area of exactly 169 sq. ft. abutting my house so that the house itself forms the northern boundary. The... more

Samantha needs to mix a 20% saline solution with a 40% saline solution to create 200 millileters of a 26% solution. How many millileters of each solution must S

Samantha needs to mix a 20% saline solution with a 40% saline solution to create 200 millileters of a 26% solution. How many millileters of each solution must Samantha use?

a large box measures 4 ft by 7 ft by 3 ft. Find the volume of the box. Convert your answer to in3

  large box measures 4 ft by 7 ft by 3 ft. Find the volume of the box. Convert your answer to in3

04/26/16

An airplane heads due west with an airspeed of 84 m/s. Because of a wind...

An airplane heads due west with an airspeed of 84 m/s. Because of a wind blowing due north, the speed of the airplane relative to the ground is 98 m/s. What is the wind speed? (ans: 50 m/s toward... more

04/20/16

A particle moves on a line away from its initial position so that after t hours it is s = 2t^2 +3t miles from its initial position.

Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.   Thank you!!

04/18/16

Evaluate each limit, if it exsists.

Here are some examples of questions in the textbook that I don't know how to do for my test!   Evaluate each limit:   lim (x approaches 0) tanx/x     lim (x approaches 0)... more

04/18/16

help me solve this problem?

suppose that when a particular drug is injected, the concentration is 1.5mg/mL. After 4 hours, the concentration has dropped to 0.25mg/mL. Solve for the decay constant, k, and write an exponential... more

04/17/16

Which has more momentum? What momentum does the car possess relative to the truck and Track relative to the car?

A car weighing one ton is moving at 50 km/hr and a truck weighing two tons is moving at 25 km/hr. Both car and the truck are moving in opposite directions.

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