Thursday
December 8, 2016

Posts by Kevin

Total # Posts: 1,206

Geometry
I need some assistance, here's the question. 4. What are the values of x and y? A. x=9/4,y=3/4 B. x=9/4,y=15/4 C. x=15/5,y=5/4 D. x=3/4,y=15/4 I'm thinking it's either A or B, but I don't know for sure. Can anyone help?
February 25, 2015

Math
How many years old is a person if her age now is equal to her age in 3 years x 3, less 3 times her age 3 years ago?
February 23, 2015

Physics
In a particular crash test, an automobile of mass 1295 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 25 m/s and 1.5 m/s, respectively. If the collision lasts for 0.11 s, find the magnitude of the ...
February 1, 2015

algebra
The line l_1 passes through the points (3,-3) and (-5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
January 24, 2015

Math
Where did you get the two from in (3/2)?
January 10, 2015

Math
you know that 8x = 5y you know that 3y=14z since 5 = (5/3)*3, 5y = (5/3)*(3y) so, 5y = (5/3)(3y) = (5/3)(14z) = (70/3)z now you have 5y, which is the same as 8x. You want 12x. since 12 = (3/2)*8, 12x = (3/2)*8x. 12x = (3/2)(8x) = (3/2)(5y) = (3/2)(70/3)z = (70/2)z = 35z Can ...
January 10, 2015

math
If ten crates arrive at the receiving dock, and each crate contains 7 boxes of decorative vases with 12 vases per box; how many vases are in each crate?*
December 18, 2014

Math
5) A car manufacturer has manufacturing plants in 3 major cities. Below are the daily amounts of cars produced per plant for 3 different model types. (matrix A) Model X Model Y Model Z Plant A 12 10 0 Plant B 4 4 20 Plant C 8 9 12 Due to wage increases, the April profits are ...
December 12, 2014

Math
The relative value of currencies fluctuates every day. When this problem was written, one Netherland Antillean Guilder (Used on the Caribbean island of CuraÇao) was worth .558659 US dollar. a. Find a function that gives the U.S. dollar value f(x), of x Netherland ...
December 12, 2014

Math
2) A car dealership advertises a 15% discount on all its new cars. In addition, the manufacturer offers a \$1000 rebate on the purchase of a new car. Let x represent the sticker price of the car. a. Suppose only the 15% discount applies. Find a function f that models the ...
December 12, 2014

Physic
thank you so much !
December 11, 2014

Physic
A grenade that is falling vertically explodes into two equal fragments when it is at a height of 2000 m and has a downward velocity of 60 m/s. Immediately after the explosion one of the fragments is moving downward at 80 m/s. Find the position of the second fragment and the ...
December 11, 2014

algebra
ᕦ( ͡° ͜ʖ ͡°)ᕤ
December 5, 2014

Math
) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after ...
December 4, 2014

Math
A man is running around a circular track that is 200m in circumference. An observer uses a stopwatch to record the runner’s time at the end of each lap, obtaining the data in the tale below. a. What was the man’s average speed (rate) between 68 s and 152 s? b. What ...
December 4, 2014

physics
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.30 m × 2.22 m. On a certain day, the indoor temperature is 22°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.) What is...
December 4, 2014

Visual Basic
debugging exercise: Private Sub btnItemNumber_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnItemNumber.Click Dim decCost As Decimal Dim intCount As Decimal decCost = Convert.ToDecimal(txtCost.Text) Inventory(decCost, intCount) End Sub Private Sub...
December 3, 2014

Math
Diffrentiate implicitly with respect to x. Solve for y' 3xy - 2x^2 + 5y^2 =7
November 29, 2014

earth science
Which of the following statement is False: A.Cinder cones are built from ejected lava fragments and are usually less than 300 meters high B.Calderas are large collapsed depressions having more or less circular form C.Most volcanoes are fed magma through short conduits called ...
October 29, 2014

Math
1) An aerobics class is being offered at the ABC body gym. Nonmembers pay \$4 per class while member pay a monthly fee of \$10 plus \$2 per class. a. Create a linear system to represent the two options. b. At how many classes will the cost be the same? What is that cost? c. When ...
October 13, 2014

Math
Find three pairs of numbers for which the LCM (least common multiple) is the product of the two numbers; The pairs and LCMs are: 8 and 12: 24; 3 and 15: 15; 7 and 11: 77; 9 and 10: 90; 24 and 36: 72; 20 and 25: 100; 14 and 42: 42; 30 and 12: 60
September 17, 2014

math
thank you
September 17, 2014

math
(c+2)^2 -1 factor completely (c+2)(c+2) -1 i don't know what to do next. Can you help me please thank you
September 17, 2014

Math
3 to the 3rd power. 3hrs 3cem. 27cem.
September 16, 2014

math
The differnce of two numbers is 2 the difference of their squares is 20 find the numbers
September 15, 2014

Math
12 cards are drawn with replacement from an ordinary deck of 52 cards. What is the probability that 4 queens of hearts, 4 aces of spades, and 4 kings of clubs are drawn?
September 14, 2014

algebra
thank you very much
September 8, 2014

algebra
how need help with this question subtract 7y^2 -3y from 4y^2 + 2y isthe answer 3y^2 - 5y thank you
September 8, 2014

MATH
what is th lomgest multiplication combination you found for each of these numbers
September 8, 2014

Root Words
Which of the following root words means “more than one”? A. Junct- B. Ambi- C. Ject- D. Terr- B?
September 3, 2014

math
Simplify the expression. Assume all variables represent nonzero
September 2, 2014

Definitions
Speculation A. Discovery B. Evidence C. Hypothesize D. Analysis D?
September 1, 2014

Definitions
i think b . subculture
September 1, 2014

Definitions
A smaller group of people within a larger group A. Culture B. subculture C. Demography D. Population None of the definitions say anything like the question please help
September 1, 2014

Definitions
People joined together in business. A. Proprietorship B. Ownership C. Partnership D. Investment I got C
September 1, 2014

vocabulary
Ok. Its B
August 29, 2014

vocabulary
Denotative and Connotative A. Synonyms B. Antonyms C. Neither I think A?
August 29, 2014

health
thanks again
August 27, 2014

health
What are common causes of short-term stress? A. Too much to do in not enough time B. Lots of little problems in the same day C. Getting lost D. All of the above D?
August 27, 2014

health
Thankyou :)
August 26, 2014

health
Then A?
August 26, 2014

health
How do you lose weight? A. By using up more calories than you take in B. By using up more money on diet programs and pills C. By using up less energy than you take in D. By using up less calories than you take in D?
August 26, 2014

health
Is it b?
August 19, 2014

Math
For a given right, side a = 76.4 feet and side b = 39.3, what is the measure of angle b to the nearest degree
August 16, 2014

physics
A 900kg car strikes a huge spring at a speed of 22m/s, compressing the spring 4.0m How long is the car in contact with the spring before it bounces off in the opposite direction? I found the spring constant to be 27225, which i know is right, but am having trouble with this ...
July 29, 2014

physics
A soccer ball travelling at 15 m/s [E] bounces off of a goal post and ends up moving 12 m/s [S 30¡Æ E]. If the ball was in contact with the post for 0.10 seconds, calculate the acceleration of the ball.
June 27, 2014

Calculus
find the area of the region inside the limacon r= 8 + 4sin(theta) HElp!! if you can show steps, i'd be greatful
June 2, 2014

math
i think its b
May 28, 2014

English III
If the writer paraphrases an opinion that she has read rather than reached independently, she is not required to cite the source. True or False?
May 27, 2014

sci207
How would the "weather" be affected if the water was at a decreased temperature?
May 26, 2014

Algbera
which angle is coterminal with an angle measuring 130 degrees? 230 130 -490 490 none of these
May 21, 2014

math
May 21, 2014

english
May 14, 2014

personal finance
Bryan earns \$6.25 per hour plus 1.75% commission on all goods sold. One week he worked 37 hours and sold \$6,500 worth of goods. What were his weekly earnings?
May 11, 2014

calculus
Find the interval of convergence of the series. ∑(sinx/10)^n
May 7, 2014

calculus help
find the derivative of the function. integral cos(x) to sin(x) ((ln(8+3v))dv)
May 1, 2014

Calculus Help
Find the values of c such that the area of the region bounded by the parabolas y = 4x^2 − c^2 and y = c^2 − 4x^2 is 256/3. (Enter your answers as a comma-separated list.)
May 1, 2014

Statistics
Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
May 1, 2014

Statistics
Thanks - that is what I picked.
May 1, 2014

Statistics
A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
May 1, 2014

Statistics
A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
April 30, 2014

Statistics
Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow researchers, noting...
April 30, 2014

Statistics
Tukey's HSD test is used a. prior to performing a one-way ANOVA. b. to determine the amount of difference between group means. c. to determine whether the overall difference among groups means is significant. d. to locate "true" differences after a significant F
April 30, 2014

Statistics
Given: The difference between two dependent means is statistically significant. The reason behind this outcome can be difficult to determine when a. population standard deviations are estimated from samples. b. sample size is large. c. a large value of t is obtained. d. ...
April 30, 2014

Statistics
Tukey's HSD test is used a. prior to performing a one-way ANOVA. b. to determine the amount of difference between group means. c. to determine whether the overall difference among groups means is significant. d. to locate "true" differences after a significant F
April 29, 2014

Statistics
Given: The difference between two dependent means is statistically significant. The reason behind this outcome can be difficult to determine when a. population standard deviations are estimated from samples. b. sample size is large. c. a large value of t is obtained. d. ...
April 29, 2014

Math Help!
-If one fish is twice as long as another,how do their weights compare? -If one fish is as heavy as another, how do their lengths compare? L- 31,33,35,37,39 W- 250,308,363,420,520
April 29, 2014

Statistics
In order to critical values of t to be precisely correct for testing Ho: u1-u2=0 using small independent samples, we must assume a. ó1 = ó2 b. normality of populations c. u1 = u2 d. all of the above.
April 29, 2014

Statistics
In one-way ANOVA involving three groups, the alternative hypothesis would be considered correct if, in the population, a. all means were equal. b. two means are equal but the third is different. c. all three means have different values. d. either (b) or (c) above is true.
April 29, 2014

Statistics
Professor Casey performs a t test of Ho: u1 - u2=0 using a-.01 and finds a significant difference between Xmean1 and Xmean2. From this we can infer. a. a large difference between u1 and u2. b. an important difference betwee u1 and u2. c. u1 and u2 to be unequal. d. all of the ...
April 29, 2014

Math-Help
A manufacturer has determined that pro t P (in dollars) is a quadratic function of dollars per month a spent on advertising. The relationship is given by p=1+50a-0.1a^2 if a is at most 500 dollars per month -How much should be spent on advertising if pro t is to be a maximum...
April 28, 2014

Math-Help
A rock is tossed straight up into the air. The height h (in feet) t seconds after it is tossed is given by the function: h(t)=-16t^2+100.4t+5.1 (a) Make a table of values for 0 to 10 seconds. (b) Graph the function. (c) What is the initial height of the rock? (d) When did the ...
April 28, 2014

College Chemistry
If 3.00 moles of NaCl were mixed with 0.9 L of 0.5 M of AgNO3, how many moles of solid would form? Include the formula for the solid.
April 25, 2014

Statistics
Prof. C is studying a population of the elementary school pupils in a school district with data on all its children. Another prof. suggests he calculate a confidence interval to estimate the mean age of the children. Prof C responds that it is not necessary. Explain why Prof. ...
April 23, 2014

Stats
Of 43 bank customers depositing a check, 18 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (b) Check the normality assumption.
April 18, 2014

Stats
Find the 95 percent range for the sample mean, assuming that each sample is from a normal population. a. ì = 200, ó = 12, n = 36 b. ì = 1,000, ó = 15, n = 9 c. ì = 50, ó = 1, n = 25
April 18, 2014

Geometry
so you'd take sin or 21 and then multiply that by 3.5, to get h, right? I did that and I got 1.25 when rounded. Is that right?
March 24, 2014

Geometry
A fighter plane observes a target on the ground with an angle of depression of 21 degrees. The target is 3.5 miles away along a direct line of sight. How high is the fighter plane? Round to hundredths. Please help!
March 24, 2014

math
Five friends each ate 2/12 of a pizza .What fraction of the pizza Is left?
March 24, 2014

math
There are 3 earthworms .Their length are 6 1/4 inches, 4 1/4 inches and 5 3/8 inches. What is the total length of the three earthworms.
March 24, 2014

physics
106984.8
March 23, 2014

PRACTICAL ENGLISH PROCTORED EXAM
In which of the following sentences is the verb in the active voice? A. The telephone bill was paid yesterday. B. The mother called her son for lunch. C. The boy was called by his mother. D. We were told that Jim is ill.
March 4, 2014

C++ Programming
create a class called DataSet. This class will have a default constructor that is empty, but an overloaded constructor that takes an integer argument and creates a vector with that many random numbers in it. For example, if I created: DataSet d1 = new DataSet(500); ...it would...
February 27, 2014

Microeconomics
Suppose that the price of product X rises by 20 percent and the quantity supplied of X increases by 15 percent. The coefficient of price elasticity of supply for good X is?
February 26, 2014

math
a team won 60% of the games they played. the lost 42 games. how many games did they win?
February 24, 2014

science
Which area in the United States has the highest average number of thunderstorms per year? A. Southeastern B. Northwestern C. Southwestern D. Mid-Atlantic
February 19, 2014

science
Which statement about supercell storms is false? A. A supercell storm can produce some of the most violent weather conditions on Earth. B. A supercell storm occurs only during the winter months. C. A supercell storm is characterized by rotating updrafts. D. A supercell storm ...
February 19, 2014

Algebra
Best Car rental agency charges a flat rate of \$40 and 10¢ per mile to rent a standard car. A+ Rentals charges a flat rate of \$35 and 20¢ per mile for the same car. a. Write an equation to represent the total cost (y) and number of miles (x) of renting from each ...
February 10, 2014

Algebra
Your monthly commission as an appliance sales person is represented by the equation, S = 50x+450, where 50 is the rate paid for each appliance sold, x is the number of appliances sold, 450 is the base pay per month, and S is the salary. Complete the following table to ...
February 10, 2014

Physics
Can an object with constant acceleration reverse it's direction of travel? I think it's yes because when a ball is thrown in the air it has a constant acceleration of gravity and the acceleration continues when it reverses it's direction. Am I right??
February 9, 2014

Algebra
Sally calculated that she will lose 4.6 calories per minute walking at a rate of 3 miles per hour. How many minutes does she need to walk to burn at least 250 calories?
February 2, 2014

Algebra
Peter is throwing a surprise party for his friend Tammy. He has a budget of \$350. If the restaurant charges \$20 per person for drinks and food and a cleanup fee of \$35, what is the maximum number of people that he can invite to stay within budget?
February 2, 2014

math
the melt in your mouth chocolate factory is a rectangular building. the distance across the front of the store is 28 yards. the distance from the front to the back of the building is 12 yards. if the owners want to put up a fence around the outside of the factory. how many ...
February 2, 2014

Studies In The American Novel
These are questions I have pulled out from my study guide that I do not know the answers to. I would greatly appreciate it if you would correctly answer these for me since it would help me on tomorrow's test.
January 16, 2014

Studies In The American Novel
1) Pamela is the first American Novel True or false? 2) The early American novels of sentiment dealing with domestic situations True or false? 3) Many of the early novels were written in the form of letters True or false? 4) John Steinbeck's fiction has been considered ...
January 16, 2014

Accounting
On Aug 14th, One of our Partner's ( Compuville ) cash book showed a debit balance of \$4,000.00. His bank statement showed a balance of \$4,270.00. On comparison the following were found: * check issued amounting to \$2,500.00 has not been cashed * The bank rejected checks ...
January 10, 2014

Math - Algebra
2and2differnce is 5
January 4, 2014

Physics-urgent
A speeder is driving down the road at a constant 20 m/s, he passes a patrolman parked on the roadside. The patrolman waits 3 seconds, then pursues the speeder, accelerating at a constant 4.0 m/s. How long does it take the patrolman to catch the speeder? How far has he traveled...
December 13, 2013

Trigonometry
Could someone please help me with the following q's I'm having some trouble: 1.) cot θ (theta) = 0.791, find sec θ and tan θ 2.) tan θ = 9/40, what is the value sin^2θ + cos^2θ
November 26, 2013

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