Posts by janice
Total # Posts: 301

algebra
tell whether x and y show direct variation and explain reasoning 
Math
I have 6 hundred,4 tens, 5 ones and 7 tenths. What number am i 
Physics
A plane intends to north with a speed of 250 m/s relative to the ground through a high altitude cross wind of 50 m/s coming from the east. Determine the bearing that the plane should take( relative to due north), A) the planes speed with respect to the air answer 
Quantitative Statistic
Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 20 stations last Tuesday, the correlation was .78. At the .01 significance level, is the correlation in the population greater ... 
Quantitative Statistic
The following information is available. H0 : ? ? 220 H1 : ? < 220 A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .... 
Quantitative Statistic
The following information is available. H0 : ? ? 220 H1 : ? < 220 A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .... 
ALGEBRA I
You need to rent a moving truck for two days. Rider Moving Trucks charges $50 per day and $.50 per mile. UMove Trucks charges $45 per day and $0.75 per mile. Write an equation describing each situation. Graph them on the same xy axis. You only need Quadrant I because all ... 
math
sue has 19 feet of material. she plans on making scarves. if each scarf is to be 7 1/2 inches, how many can she make? 
3rd grade math
Write fact families for the numbers in 30 and 31.how are the fact families different 
Maths
In class 4A, 21 boys play cricket, 16 boys play football. 13 play both games. What is the smallest number of boys in that class 
math
359=sim 17 what number or sum would likely follow this numver 
Algebra 2 help plsss?
@Kik: HunchoBoyDee I am saying you need to get off the website if you're going to be talking about social media and stuff. Like I said before, this is a helping site. 
Algebra 2 help plsss?
@Kik:HunchoBoyDee this isn't no dating website hunni.. this is a helping site where the teachers could help other students with any questions they have due to their work. The teachers try so hard to give you a correct response and/or answer and people just take it the ... 
math
How come half the questions posted in here don't even get answered? 
Math
Point $G$ is the midpoint of median $\overline{XM}$ of $\triangle XYZ$. Point $H$ is the midpoint of $\overline{XY}$, and point $T$ is the intersection of $\overline{HM}$ and $\overline{YG}$. Find the area of $\triangle MTG$ if $[XYZ] =150$. 
Finance
Sandy is offered an annuity at 3.9% compounded monthly to save the $12000 she need over the next 6 yrs what would the monthly payments be 
Math
Jasmine invested $73,000 in a fixed rate account offering 7.2% interest rate compounded semiannually. How long will it take her to grow it to $100,000? 100,000=(73,000)(0.072)^2)t 
physics
Consider the line passing through the center of the cue ball as the x axis. At the point of collision with the solid ball on the table, a line passing through the centers of the cue ball and the solid ball form a 45° angle with the X axis. Assume no external forces acting ... 
english
When he came/ he had a load on his shoulder/ to stoke his fire at suppertime. A) to fuel B) to thrill C) to encourage Here is the rest of the question;) 
Math
To make evening schedule.... Need 12 employees on monday.. 13 on tues.. 14 on wed... 15 on thurs.. 17 on fri... 16 on sat... 14 on sun... They on can work 4.5 hrs a day ... How many employees needed for week? 
Finance
High Hills plc produce underwater turbines to generate energy and are considering introducing machinery that will reduce the labour hours required to produce a turbine from 5 hours to 2 hours for the remainder of the product life cycle of 3 years. The production volumes are ... 
Chem
A gas has density of 1.977 g/dm3 at STP (a) what is its molecular mass? (b) what is its density at 77¢XC and 0.95 atm pressure? (c)If the gas is an oxide and has the formula XO2, what is the atomic mass of X 
physics
In the Atwood machine shown in Figure 5.14a, m1 = 2.00 kg and m2 = 8.00 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into ... 
physics
Suppose that a net force F gives an object with a mass of m an acceleration of 9.65 m/s/s. Suppose that the net force were increased by a factor of 4.7, and the mass were increased by a factor of 3.0. What would be the new acceleration (in m/s/s)? Please help, for I do not ... 
physics
A care package is released from a plane moving with a horizontal speed of 123 m/s. The plane flies at a constant height of 1013 m above the ground. a.) Find the speed of the care package just before it hits the ground. b.) Find the magnitude of the angle with respect to the x... 
math
maggie has a 27 feet long ribbon what's the length of the ribbon in yards 
Math
I posted this under business the first time and got no answer so since its more mathematical here it is again: I can only put away $1,000 a year toward retirement. I am 22 and plan on retiring at 65 and earning 6%. How much will I have at retirement? Not positive the answer I ... 
Business
I can only put away $1,000 a year toward retirement. I am 22 and plan on retiring at 65 and earning 6%. How much will I have at retirement? Not positive the answer I got is correct..my answer is $464,215.00 
Math
Farmer Brown planted corn and wheat on his 1200 acres of land. The cost of planting and harvesting corn is $275.00 per acre. The cost of planting and harvesting wheat is $125.00 per acre. If Farmer Brown's total cost was $244,500, how many acres of corn did he plant? 
Algebra
what is the interest rate necessary for an investment to quadruple after 5 years of continuous compound interest? I keep getting r=11% 
Math
I want to buy a house in 5 years. I need to have a down payment of $50,000. How much do I need to have today in order to have the down payment, if I can earn 5%? I have tried to figure this out and have arrived at 39200.00 
Business
I just did the problem another way and got 39200.00 please help me! 
Business
This is what I get: 39,176.31 correct? 
Business
I want to buy a house in 5 years. I need to have a down payment of $50,000. How much do I need to have today in order to have the down payment, if I can earn 5%? not sure how to go about this problem 
Business
I want to buy a car with cash in 4 years. I have $10,000.00 that I can invest today. I can get a bond earning 4%. How much will I have for the purchase? This is what I am thinking for an answer but not quite sure: N=4 years I=4% PV=10,000 for a total of 11698.59 Am I on the ... 
Algebra
I am having a hard time trying to figure this out. I have watched a video on how to do it but unable to understand. If i know what to put where in the equation I would be able to figure it out. I know I have to change 4 hours to 240 minutes. 
Algebra
Under ideal conditions, a population of e. coli bacteria can double every 20 minutes. This behavior can be modeled by the exponential function: N(t)=N(lower case 0)(2^0.05t) If the initial number of e. coli bacteria is 5, how many bacteria will be present in 4 hours? 
Business
It is 10% but should it be? or should it be another amount or percent? 
Business
As a Christian, do you see tithing as a requirement? Should it be 10%? 
Algebra
Form a third degree polynomial function with real coefficients such that 2+i and 5 are zeros. f(x)= ? 
Algebra
The price p and the quantity x sold of a small flatscreen television set obeys the demand equation below. a) How much should be charged for the television set if there are 80 television sets in stock? b) What quantity x will maximize ... 
Algebra
A golf ball is struck by a 60degree golf club at an initial velocity of 84 feet per second. The height of the golf ball in feet is given by the quadratic function h(x)= 16 x^2/(42)^2+72.7/42x where x is the horizontal distance of the golf ball from the point of impact... 
Science
Chemical reactions. When we cook anything, the tartness usually flavors down and the natural fruit flavors and inherent sugars expand their presence. 
Algebra
Jim wants to build a rectangular parking lot along a busy street but only has 1,900 feet of fencing available. If no fencing is required along the street, find the maximum area of the parking lot. 
Algebra
Farmer Ed has 9,000 meters of fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the river, what is the largest area that can be enclosed? 
Algebra
A club currently has 300 members who pay $ 400 per month for membership dues. The club's board members want to increase monthly revenue by lowering the monthly dues in hopes of attracting new members. A market research study has shown that for each $ 1 decrease in ... 
algebra
A rancher has 4,700 feet of fencing available to enclose a rectangular area bordering a river. He wants to separate his cows and horses by dividing the enclosure into two equal areas. If no fencing is required along the river, find the length of the center partition ... 
algebra
A rancher has 4 comma 7004,700 feet of fencing available to enclose a rectangular area bordering a river. He wants to separate his cows and horses by dividing the enclosure into two equal areas. If no fencing is required along the river, find the length of the center ... 
algebra
Jim wants to build a rectangular parking lot along a busy street but only has 1 comma 9001,900 feet of fencing available. If no fencing is required along the street, find the maximum area of the parking lot. 
algebra
Farmer Ed has 9 comma 0009,000 meters of fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the river, what is the largest area that can be enclosed? 
algebra
A club currently has 300300 members who pay $ 400$400 per month for membership dues. The club's board members want to increase monthly revenue by lowering the monthly dues in hopes of attracting new members. A market research study has shown that for each $ 1$1 ... 
Algebra
The CarryItAll minivan, a popular vehicle among soccer moms, obeys the demand equation ppequals=negative StartFraction 1 Over 40 EndFraction x plus 19 comma 000−140x+19,000. The cost of producing xx vans is given by the function Upper C left parenthesis x... 
word problem
A contractor, Mr. Parker charged his customer $100 for painting a rectangular ceiling of length 5.4m and width 3m. Another contractor, Mr. Lewis charged his customer $115 for painting a rectangular ceiling of length 5.7m and width 3.2m.The quality of work is the same and both ... 
Chemistry
Suppose you are assigned to prepare a buffer of 0.10M HNO2 (Ka=1.7 x 10^4) and 0.10M NaNO2 by mixing equal volumes of both solutions. What is the pH of the resultant solution? How would I first start this question? I have no clue what the steps are to be frank. 
Finance  Loans problem please help
Have a 27,062 car loan payable over 6 years want to pay 3000 toward the principle what will I owe 3% financing 
math
How many 50 centimeter pieces of ribbon can Casey cut from a roll of 60 meters long? 
Calculus 2 Trigonometric Substitution
I'm working this problem: ∫ [1tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)[(sin^2x/cos^2x)/(1/cosx) ∫cosxsinx(sinx/cosx) ∫cosx∫sin^2(x)/cosx sinx∫(1cos^2(x))/cosx sinx∫(1/cosx)cosx sinx∫secx∫cosx sinxsinx∫... 
Calc
∫ (2x+1)/(x+1) dx Please show steps if you work it. I think it's a partial fraction and worked with decomposition. Not sure though. 
Calculus 2
I got the first two, but I'm unsure with the last one. I got the answer to be ln secxtanx+C Here's what I did: ∫ [1tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)[(sin^2x/cos^2x)/(1/cosx) ∫cosxsinx(sinx/cosx) ∫cosx∫sin^2(x)/cosx sinx∫(... 
Calculus 2
∫ tan^2 (x) sec^4 (x) dx ∫ [tan^2 (t) + tan^4 (t)] dt ∫ [1tan^2 (x)] / [sec^2 (x)] dx Trigonometric integral Please show steps so I can understand! 
Math
The table shows the actual retail market share of passenger cards from Ford Motor Company as a percentage of the U.S. market. Year Market Share 1975 23.6% 1980 17.2% 1985 18.8% 1990 20.0% 1995 20.7% A mathematical model for this date is given by f(x) = 0.04x^2  0.8x + 22 ... 
psychology
In general, the approach to stress embraced by psychoneuroimmunologists focuses on 
ps316
There 112 seats there 7 seats in each row and 70 people are seated how many rows are empty 
physics
What physics is involved for a passenger feeling pushed backward into the seat of an airplane when it accelerates along the runway during takeoff? 
algebra
Write a formula to express the following sentence as an equation: The sale price us 25% off the original price. Use S for sale price and P for original price to express S as a function of P. 
math problem solving
yes it is. thanks 
math problem solving
the digit 5 occurs two times in the population of fairbanks. what is the value of each 5? explain your answer fairbanks 35,252 
Biology
Suppose that a repressor regulated the expression of the galA gene. Which of the parenthesis would be correct? (((supposing hypothetical bacterium gene: "galA" – encodes an enzyme that is required for cells to digest the sugar galactose/and/ "argB" &#... 
sociology
TWO is the wrong answer..I just got it wrong on the quiz. The correct answer is THREE. 
English
The astronauts who were selected for this mission had to be in superb physical condition. Is sentence a essential or nonessential? 
math
1/32 1/12 times 6/16 equals to 1/12 times 3/8 which equals to 1/32 
Finite Math
: Four cards are drawn without replacement from a well shuffled standard deck of cards. Let X be the number of aces drawn. 12. What are the possible values of the random variable X? Write them in increasing order as a set using roster (or list) notation. 13. Sketch a ... 
Journalism
Please im begging you were going to submit the last articles tomorrow, help me make a feature article ... the topic is about unity for what happened in the philippines, the super typhoon yolanda please pleasple please 
statistics
Playing game of chance and pay 300 by rolling a fair die one time if you rome a 2 and receive $1300 if you roll a 4 or six you receive $900 if you ore a 3 5 or 9 receive nothing. find expected value for this game. based on value is it a good game to play? 
statistics
participant on tv show picke from lage # applicants with equal number of men and woman .amongst the last 9 participant 7 have been women . if they are picked randomly what is the probability of geting 7 more women when 9 people are picked 
statistics
Test consist of 10 multiple choice questions each having 4 possible answers one being correct. you guessed all 10 what is the probability of getting less than 30% 
statistics
Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks significantly more often than females. To further investigate this phenomenon, suppose a researcher selects a random sample of n=36 male undergraduates and a ... 
statistic of behavioral science
for each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer. A score of x=56, on an exam with the mean =50 and the standard deviation of 4; or a score of x=60 on an exam with the mean=50 and the standard deviation =20 
Chemistry 12
When 1.00 g. of MgCO3 is added to 2.0 L of water, some, but not all, will dissolve to form a saturated solution. Calculate the mass of solid that remains undissolved. 
chemistry
12g/molC / 44g/molCO2 = x / 1.039g CO2 12/44 (1.039) = 0.2834 g C 2g/mol H2 / 18g/molH2O = x / 0.6369gH2O 2/18 (0.6369) = 0.071 g H 0.5438  0.2834  0.071 = 0.1939 g O 0.2824gC/12g/molC = 0.0236 mol C 0.071gH / 1g/molH = 0.071 mol H 0.1939gO/16g/molO = 0.0121 mol O Divide ... 
math
how do you do the steps for this problem find two exact values for sin(cos^1 sqrt5/6) 
Math
3a+4b=25 2a3b=6 
algebra
Use factoring and the zeroproduct property to solve the following problems. 1. z(z1)(z+3)=0 2. x^2x10=2 3. 4a^211a+6=0 
Pschology
A developing field in psychology is called Positive Psychology. It is exploring ways to help people become happier and productive in life. Describe the field of positive psychology and provide your critique of this particular field. What does the research suggest on the value ... 
trig
A ship is headed due north at a constant 20 miles per hour. Because of the ocean current, the true course of the ship is 15°. If the currents are a constant 18 miles per hour, in what direction are the currents running? (Enter your answers as a commaseparated list. Round ... 
trig
A 52foot wire running from the top of a tent pole to the ground makes an angle of 57° with the ground. If the length of the tent pole is 44 feet, how far is it from the bottom of the tent pole to the point where the wire is fastened to the ground? (The tent pole is not ... 
trig
Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest whole number. Round your answers for sides c and c' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank... 
trig
Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest minute. Round your answers for sides a and a' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank.) B... 
trig
Find all solutions to the following triangle. (Round your answers for angles A, B, A', and B' to the nearest minute. Round your answers for sides a and a' to the nearest whole number. If either triangle is not possible, enter NONE in each corresponding answer blank... 
trig
Find all solutions to the following triangle. (Round your answers to one decimal place. If either triangle is not possible, enter NONE in each corresponding answer blank.) A = 115.2¡ã, a = 43.6 cm, b = 23.1 cm First triangle (assume B ¡Ü 90¡&... 
trig
Given BC = 53 cm, BD = 62 cm, CD = 80 cm, ABC = 53°, and ACB = 66°, find the following. (Round your answers to the nearest whole number.) (a) the length of the chainstay, AC AC = cm (b) BCD BCD = ° 
trig
A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 16 knots with heading 135°, and the second tugboat is traveling at a speed of 15 knots with heading 195°. Find the resulting speed and direction of the barge. (Round your answers to the ... 
trig
A plane has an airspeed of 190 miles per hour and a heading of 24.0°. The ground speed of the plane is 214 miles per hour, and its true course is in the direction of 40.0°. Find the speed and direction of the air currents, assuming they are constants. (Round your ... 
trig
A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane. 
English
Her responsibilities include assisting other tasks as required / assisting with other tasks as required Which one is correct? 
UMD
A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution? 
Physics
A jet plane lands with a velocity of 100 m/s and can accelerate at a maximum rate of 5.0 m/s2 as it come to rest. Can this plane land at an airport where the runway is 0.80 km long? 
geometry
find th measure of DAEB for MDBEC = 127 DEGREES 
english
please write a paragraph to show you comprehend what analogies and idoms are. use at least one analogy and one idom in the paragraph 
Psychology
How would the researcher randomly select files? (What does the process look like?)