02/21/20

What is it’s M.A.?

A lever has a distance from the fulcrum to the input force of 12 meters and a distance of the fulcrum to the output force of 2 meters.

08/26/19

Physics Question

During the first 25 minutes of a 3.0 hr trip, a car has an average speed 39 km/h. What must the average speed in km/h of the car during the rest of the trip be if the car is to have an average... more

06/03/19

Delete newline in Vim?

Is there a way to delete the newline at the end of a line in Vim, so that the next line is appended to the current line? For example: Evaluator<T>(): _bestPos(){ } I'd like to put this... more
C++

05/30/19

C++ code file extension? .cc vs .cpp?

I have seen C++ code saved as both `.cc` and `.cpp` files. Is there a difference between the two? I am mainly concerned with programs on Linux systems.

Solving an equation. Please help

The daily cost for baking x loaves of bread at Joanna’s bakery is given in dollars by C=0.3+ square root 5x + 4000. If bread at Joanna’s bakery sells for $1.00 a loaf,how many loaves must Joanna... more

05/30/19

Given two directory trees, how can I find out which files differ?

If I want find the differences between two directory trees, I usually just execute: diff -r dir1/ dir2/ This outputs exactly what the differences are between corresponding files. I'm interested... more

05/29/19

prediction of points using random number generator

sandra swims the 100m freestyle for swim team. She gets 3 points for 1st place, 2 for 2nd, 1 for 3rd and 0 points if she doesnt place. her coach used last years stats to design a simulation using... more

Find the amount of lemonade that needs to be combined to get the answer

Lemonade is available in only two types with different lemon juice concentrations:Type 1 is made by mixing one jug full of lemon juice with two jugs full of water.Type 2 is made by mixing one jug... more

PROBABLITY QUESTION

An urn contains 55 red and 66 white balls. Two balls are drawn in succession without replacement. If the second ball is​ white, what is the probability that the first ball was​white?
C++

05/23/19

Printing 1 to 1000 without loop or conditionals?

**Task**: Print numbers from 1 to 1000 without using any loop or conditional statements. Don't just write the `printf()` or `cout` statement 1000 times.How would you do that using C or C++?

05/16/19

How do you solve Sin(x-4π/3)=2sin(x-π/3)

Math homework. Solve the equation.

Im not sure where i went wrong with this question

Question: From the top of a cliff 112 m high, the angle of depression to a boat is 9°15′. How far is the boat from the foot of the cliff?I tried doing this:cos(9 degrees 15 minutes) = 112/xx *... more

Modeling Exponential Growth and Decay with A=P(1+r)^1

A) It's an initial Deposit of $200 is made into an account that pays 4.2% annual interests. Write a model to represent the balance in the account after t years.B) You buy a used car for $7000 And... more

05/13/19

Factor completely x 3 +2x 2 ­-15x

A. 5x(x+1)(x-3)B. x(x-3)(x+5)C. x(x+5)(x+3)D. -3x(x+5)(x+1)

Find the sum of the given finite geometric series

Find the sum of the given finite geometric series.5+5/2+5/4+5/8+...+5/128The sum of the finite geometric series is _____(type and integer or a simplified fraction)

05/11/19

Amazon work question

If an inductor makes mistake for 10min, how many ps hours will it take to fix the damage.(assuming ps can process around 20 orders an hour and each inductor is doing 1200uph)

Argument list too long error for rm, cp, mv commands?

I have several hundred PDFs under a directory in UNIX. The names of the PDFs are really long (approx. 60 chars). When I try to delete all PDFs together using the following command: rm -f... more

Calculus question, plz help

Using Euler's Method with a step size of h = 0.3, estimate the value for y(0.9) for the differential equation 3 times dy dx plus 5 times y squared equals the sine of x, with y(0.3) = 5.

05/01/19

How do I solve dx/x2+y2=dy/2xy=dz/(x+y) 2?

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