# Posts by shasha

Total # Posts: 51

Statistics
When looking at the possibilities of drawing 5 cards from a deck of 52 there are going to be 2,598,960 possibilities. Now if we are looking to pull 2 kings, a heart, and 2 10’s, it would be 4/52, 3/51, 4/50, 4/49, 3/48 = (4*3*4*4*3/52*51*50*49*48) = The probabilities ...

Statistics
Select three different five card combinations or five-card hands from your favorite card game that utilizes a standard 52-card deck containing four suits (clubs, hearts, diamonds, and spades), with each suit containing 13 cards with numbers 2-10 and face cards ace, king, queen...

y
Find the magnitude acceleration of a jeep that is initially moving at 18m/s and comes to a complete stop in 4.2s

math
Just cross multiply everything leaving the unknown. 1 / x = 5 / 286 * 13 / 5 = 1 / 22 Hence x = 22. Substitute the value of x in fraction multiplication calculator in sites like easycalculation and verify your answer.

Discrete
A bag contains 5 red skittles, 4 yellow skittles, 3 green skittles, 2 orange skittles, and 2 purple skittles. If five skittles are removed, what is the probability that exactly two of them are green?

physics
Thank you so very much

physics
Let me see if I get this: KE=1/2(m)(v^2) but because I do not know the velocity, I would use the formula v=sqrt (2 g h) v=sqrt (2 g h) =sqrt (2*9.8*120) =sqrt (2352) then I would use the velocity 2352 for the formula KE=1/2(m)(v^2) =1/2 (3)(2352) KE= 3528

physics

physics
A 3kg basketball is dropped from the top of a 120m building. if all of the energy is converted into KE, what is the velocity of the ball just before it hits the ground

math geometry
a cone has a radius of 2 inches and a height of 12 inches if the radius of the cone is double what must be the new height in the cone in order to keep the volume constant

calculus
Simplify the expression: tan(-x)csc(x)

calculus
What is the exact value of sin(2 theta) if cos (theta)=3/5 and (theta) is in quadrent 4? 12/25 24/25 -12/25 -7/25 -24/25

spanish
Yo juego tenis en la______ de tenis. Question 4 (Fill-In-The-Blank Worth 1 points) Yo juego tenis en la______ de tenis.

thermodynamics
0.5 kg of saturated vapor is contained in a closed system with pressure of 10 bar is cooled at constant volume until pressure decreases to 5 bar. Determine heat transfer and sketch the process in a P-v and T-v diagram answer = -473.35 kJ(heat is transferred from system to ...

statistics
A study is discussed the purity of oxygen from a certain supplier. Assume that the mean was 99.61 with a standard deviation of 0.08. Assume that the distribution of purity was normal. Below what purity value would you expect to represent the smallest 25% of the population?

statistics
Twenty percent of all adult males did not visit their physicians’ offices last year. The probability that less than 23% of adult males in a sample of 800 did not visit their physicians' offices last year is approximately:

statistics
The times taken to complete a statistics test by all students are normally distributed with a mean of 120 minutes and a standard deviation of 12 minutes. Find the probability that the mean time taken to complete this test by a random sample of 16 students would be between 122 ...

statistics
The times taken to complete a statistics test by all students are normally distributed with a mean of 120 minutes and a standard deviation of 12 minutes. Find the probability that the mean time taken to complete this test by a random sample of 16 students would be between 122 ...

computer programming c++
write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value

math
how to do a problem solving stratigy of making a table/find a pattern

math
how to do a problem solving stratigy of making a table/find a pattern

math
how to do a problem solving stratigy of making a table/find a pattern

differential equation

differential equation
A simple pendulum of length is oscillating through a small angle θ in a medium for which the resistance is proportional to the velocity. Obtain the differential equation of its motion and discuss the motion.

Diff eqn- IVP
The differential equation that governs the forced oscillation is shown below: 0.2 d²y/dt² + 1.2 dy/dt +2y = r(t) where r(t) is the external force. Given that r(t) = 5 cos 4t with y(0) = 0 . find the equation of motion of the forced oscillations

Diff eqn- IVP
oww...ok...

Diff eqn- IVP
why stiffness (of a spring) ?

Diff eqn- IVP
A simple pendulum of length is oscillating through a small angle θ in a medium for which the resistance is proportional to the velocity. Obtain the differential equation of its motion and discuss the motion.

Diff eqn- IVP
thanzz again

Diff eqn- IVP
A particle moves on the x-axis with an acceleration, a=(6t-4)ms⁻1. Find the position and velocity of the particle at t=3 , if the particle is at origin and has a velocity of when t=0

calculus
thanxxxxx...what is * stand for??

calculus
thanxxxxx

calculus
Question 1: Experimentally it is found that a 6 kg weight stretches a certain spring 6 cm. If the weight is pulled 4 cm below the equilibrium position and released: a. Set up the differential equation and associated conditions describing the motion. b. Find the position of the...

pre algebra
A 0.25 kg mass is horizontally attached to a spring with a stiffness 4 N/m. The damping constant b for the system is 1 N-sec/m. If the mass is displaced 0.5 m to the left and given an initial velocity of 1 m/sec to the left, find the equation of motion. What is the maximum ...

Statistics
0.6

maths-statistic
A manufacturer wants to assess the proportion of defective items in a large batch produce by a particular machine. He tests a random sample of 300 items and finds that 45 items are defective. If 200 such tests are performed and a 95% confidence interval calculated for each, ...

math
how do you find the break-even point for like this example C=\$0.20x+\$50 R=\$0.30x ??

finitemath.app. help plz!
sweet delight candies sells boxes of candy consisting of creams and caramels. Each box sells for \$8.00 and holds 50 pieces of candy (all pieces are the same size). if the caramels cost \$.10 to produce and the creams cost \$.20 to produce, how many caramels and creams should be ...

finitemath.application. help me plz!
thank youu so much!!

finitemath.application. help me plz!
In 2004 median earnings including commissions, for car salespersons was \$18.61 per hour or \$744.40 per week. Dan received \$400 per week for selling new and used cars. In addition, he receives 5% of the profit on any sales he generates. (a) write an equation that relates Dan&#...

find the probability
the incomes of trainees at a local mill are normally distributed with a mean of \$1100 and a standard deviation of 150. what percentage of trainees earn less than \$900 a month?

stats
a study of the amount of time it takes a mechanic to rebuild the transmission of a 1992 chevrolet cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. if 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds...

stats. plz help i have exams in two days!
how did u come up with it?thanks

stats. plz help i have exams in two days!
find the indicated prob.: the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 86 inches, and a standard deviation of 12 inches. what is the probability that the mean annual snowfall during 36 randomly picked years will exceeds 88.8...

statistics
if Z is a standard normal variable, find the probability. the probability that z lies between -2.41 and 0

statistics
yea this was a one-sample t-test and thank you for your help. appreciated it!! (:

statistics
use technology to find the P-value for a right-tailed test with n=21 and test statistic t=2.065 apparently, i don't have a stat calculator or statistical software to use to find the answer. so i need help how to find it by using the t distribution table..

COM 220
I reviewed the site and recognized your point my thesis was a pure fact, so how do this sound: While home value across the US is dropping, Fayetteville home values are believed to be soaring.

COM 220
Number 1 in the nation for home value being back on the rise.

COM 220
I wanted to know what arguments and counterarguments I can used for my thesis; While home value across the US is dropping, the city of Fayetteville in NC in ranked number 1 in nation.

COM 220
how can i address counterarguments without weakening my premise.