Posts by Jay
Total # Posts: 1,819

Chemistry
Zinc replaces Hydrogen in hydrochloric acid. Write the equation and identify how many grams of this acid is required to produce 10^24 atoms of hydrogen. 
science
The first fullscale oceanographic research expedition was conducted by the: 
English
Thank you both! 
English
Here is the question What Is the Secret to Reaching Someone With Words? In this discussion, you will post issues related to connecting generations. To support your ideas, refer to the texts in this section, other texts you have read, and your personal experience and knowledge... 
science
what materials could have been found in the giant gas cloud that formed the solar system A hydrogen and helium B hydrogen and oxygen C carbon dioxide and oxygen D liquid and solid water 
Trigonometry
The base of a trapezoid are 397.62 and 254.15 respectively, the angles that the sides make with the longer base are 68°39.2' and 72°6.0'. Find the sides and the diagonal. Need help with this pls. 
Math
I got Chair=$95 TV=$25 Stereo=$20 Video Game Player= $45 Bed=$80 
Math
Craig went to an auction and bought five different items. Use the clues below to determine the price he paid for each item. 1. the chair was the most expensive item, which sold for $95. 2. The range of the prices of the five items was $75. 3. The stereo was the least expensive... 
algebra
Rita is spending more time at home to study and practice math. Her efforts are finally paying off. On her first assessment she scored 58 points, then she scores 63 and 68 on her next two assessments. If her scores continued to increase at the same rate, on which assessments ... 
Health
Which organ is part of both the respiratory system in the digestive system? A. Epiglottis B. Nose C. Larynx D. Esophagus (Taken by original poster which had unreliable answers.) 
history
In at least one hundred and fifty words, make an argument for which historical figure from this lesson had the most negative impact on society. 
Math
The basketball court is 50 feet across by 94 feet long. There is a black line painted around the entire basketball court. What is the total area of the basketball court? 
Advanced Algebra
Your answer "$337.25" is correct 
Math
There is a shelf in the library for the books by authors with the last names of Amster, Anderson, Axelson, Bannister, Baxter, and Bayer. The following table shows the number of books that the library has by these authors and how many of those books are currently checked out. ... 
Whitaker
A professor records the time (in minutes) that it takes 16 students to complete an exam. Compute the SS, the variance, and the standard deviation assuming the 16 students constitute a population and assuming the 16 students constitute a sample. (Round your answers for variance... 
math
Do males or female high school basketball players have a better chance of playing on college teams? On professional teams? Include probability numbers high school players: male  549,500 female  456,900 college players: male  4,500 female  4,100 college players drafted by ... 
Honors English 11 (PLEASE HELP!)
Fr lmao just give us the answers 
physics
A child of mass 20.2 kg takes a ride on an irregularly curved slide of height 6.12 m. The child starts from rest at the top. The acceleration of gravity is 9.8 m/s2 . If a frictional force acts on the child, what is the magnitude of the mechanical energy dissipated by this ... 
physics
A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work done by the 124N force. ... 
physics
A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work done by the 124N force. ... 
Math
How do you rotate a point other than the origin? Can you give me a video or explain it? 
science
Thank you! 
science
How many protons are in the isotope Oxygen20? 
Math
Ed invests $68,000 in certificates of deposit (i.e., CDs) paying 1.75%. How much additional money does he need to invest in stocks that are expected to generate a return of 11.8% so that the average return on all of Ed’s investments is 7.5%? 
Algebra
Suppose A – D = E, that N = 160,000, E/A = .75 and N/E = .40. Compute D/A. 
Algebra
Assume that S/A = 5.2, D/A = .40, N/E = .75 and A = D + E. Solve for N/S. 
phyics
A tennis player places a 68kg ball machine on a frictionless surface. the machine fires a 0.057 kg tennis ball horizontally with a velocity of 38m/s toward the north. What is the final velocity of the machine? I used p1+p2=P1'+p2' but I can't seem to get a correct ... 
physics
The linear impulse delivered by the hit of a boxer is 104 NS during the 0.431s of contact. What is the magnitude of the average force exerted on the glove of the other boxer? 
Calculus
James has 6 identical boxes shaped like rectangular pyramids. The total volume of all the boxes together is 1,024.8 cubic inches.If each box has a height of 6 inches,what is the base area of each box ? 
physics
A 4kg mass moves in a circular path of 7m radius on a frictionless horizontal table. It is attached to a string that passes through a frictionless hole in the center of the table. A second 87kg mass is attached to the other end of the string. Acceleration is 9.8 m/s^2. ... 
physics
a plane is flying in a horizontal circle at 99.5 m/s. The 92.6 kg pilot does not want his radial acceleration to exceed 9.25g. What is the minimum radius of the circular path. The acceleration of gravity is 9.8 m/s^2. 
physics
a plane is flying in a horizontal circle at 99.5 m/s. The 92.6 kg pilot does not want his radial acceleration to exceed 9.25g. What is the minimum radius of the circular path. The acceleration of gravity is 9.8 m/s^2. 
physics
A rotary speed of 2010 m/s. The rotating rod of 15.7 cm long. Assume the speed quoted is that of the end of the rod. What is the centripetal acceleration at the end of the rod? 
Math
The second 1 shouldnt be a subscript 
Math
Write the first five terms of the sequence defined by the recursive formula an = 5an1 1, with a1=0 
Math
The graph of a rational function has a local maxima at (1,0) and (8,0). The complex number 2+3i Is a zero of the function. What is the least possible degree of the function Answer is 6 But i need help with an explanation. 
trigonometric identities
sin(pi/2+x)cos(pix)cot(3pi/+x)=sin(pi/2x)sin(3pi/2x)cot(pi/2+x 
maths
find all possible pairs of two natural no whose sum is 77 and their gcd is 7 
physics
A 468 kg bear grasping a vertical tree is sliding down at constant velocity. The acceleration of gravity is 10m/s^2. What is the friction force that acts on the bear. 
5th grade science
Can you check the following? 1. Which statement about vascular plants and nonvascular plants is true? a. vascular plants produce seeds and nonvascular plants produce spores b. both plant types produce cones c. both plant types are considered angiospersm d. both plant types ... 
physics
A 2.63 kg ball is dropped from the roof of a building 180.6 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.0 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 . How far from the ... 
physics
A 3.1 kg block initially at rest is pulled to the right along a horizontal frictionless surface by a constant horizontal force of 16.6 N. Find the speed after it has moved 3.8m. 
math
the population of Houston was 6.18 million, and increased 2% per year, what is the doubling time? 
Math
thanks, i got it. What numbers do i use for the log to find the year there will be 2,000,000 members? 
Math
a website has 500,000 members in 2010. The number of members increases by 15% each year. Write an exponential growth function that represents the website membership t years after 2010. use the equation to find: how many members will there be in 2016. please help with both. 
Math
a machine originally cost $15,600 and at the end of 3 years value of $7500. what is the average rate of change in value per year of the machine between its purchase and the end of 3 years. 
Sat math
if y=m^4=n^3 and y is greater than 1 than mn=? a) y^1/12 b) y^1/7 c) y^7/12 d) y^7 
physics
do I combine sin60*80 with 48 then take that product and multiply with t? 
physics
A projectile is fired off a cliff at an angle of 60 degrees to the horizontal. The height of the cliff is 48 meters and the velocity of the projectile is 80 m/s. Find the range (dx) 
algebra
how do you write an expression showing x=the square root of 45^2 + 30^2 
physics
A man can throw a ball a maximum horizontal distance of 73.4 meters. the acceleration is 9.8 m/s^2. How far can he throw the same ball vertically upward at the same initial speed? 
Computer Science
If a file named "myfile" has rrr permissions. Write the command to change it to rwxrxr permissions using both the octal and symbolic modes of the appropriate command (octal mode was included in the instructor's lecture and published on this web ... 
college math
A teenager's heart pumps an average of 7200 L of blood every 24 hours. what is the rate of change of volume of blood? That is per 1 hour 
sat math
An employee's training time and meeting time cannot exceed 16 hours a month. For every hour of training there is 2 hours of meeting. There should be at least 2 hours of training every month. What is the difference between the maximum and minimum number of monthly training ... 
Math
There are 28 cars. 20 are white. The rest are blue or tan. There are 4 more tan cars than blue, How many cars are blue? 
Algebra, Trig
You are standing at a base of a Ferris Wheel which is 4 m above ground while your friend is riding. The Ferris Wheel is 8m in diameter. Describe how the shape of the sine curve models the distance your friend is to the platform you are on. Identify the function that will model... 
Maths
A building, B, is observed from two points P and Q which are 250 m apart. The angles PQB and QPB are found to be 67 degrees and 73 degrees respectively. What is the distance, to the nearest metre, of P from the building? 
Program Development
Design a program to project several years of population growth. The user should be able to enter in the number of years, the current population, and the growth rate. Your output screen should print out the numbers the user entered, as well as the results in a table. Include a ... 
social studies
Please help me 
social studies
After Louis XVI was executed, Maximilien Robespierre led the Committee of Public Safety in carrying out what became known as the A. Scientific Revolution. B. Industrial Revolution. C. Reign of Terror. D. Hundred Years’ War. 
Science
An animal that has body parts arranged around a central point has: A.bilateral symmetry. B.radial symmetry. C.asymmetry. D.a distinct head and tail end. 
math
Jill Moran has grades of 95 and 87 on her first two calculus tests. What is the minimum score on her third test that will give her an average of at least 90? 
Chemistry
When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. If 22.9 grams of magnesium nitride are added to 31.0 grams of water, how many liters of ammonia should be produced (assuming standard temperature and pressure)? ... 
Chemistry
When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. 26.0 grams of magnesium nitride are reacted with 17.6 grams of water. 1. How many grams of magnesium nitride will remain after reaction is complete? 2. How many ... 
Maths
For what values of k does the graph of y=5x^2 + kx + 1 have: a. One xintercept b. two xintercepts c. No xintercepts 
Maths
Find the possible equations of each of the following quadratics if their equation is of the form y = (xh)^2 and their graph passes through the point: a. (1,16) b (3,9) 
Maths
Two missiles, 2420 km apart, are launched at the same time and are headed towards each other. They pass after 1.5 hours. The average speed of one missile is twice that of the other. What is the average speed of each missile? 
Maths
1.A projectile's height (in metres) is given by the expression t(14t), where time t is in seconds. How long is the projectile above a height of 40m? 2. The area of a rightangled triangle is 60 square units and the lengths of the two shorter sides differ by 7 units. Find ... 
Math
0 Tutors Online Right Now Math 201 Help What is this? What is tutors online right now mean? I need help What are points? See all FAQ Aron is training for a 10 km marathon swim in 19 weeks. Each week, his training plan includes a long distance swim. In week six, Aron swam a ... 
Math algebra 2
x^2 
Maths
In a race, each of the four greyhounds run at its own constant speed. They all start at the same point on a circular track and at 30 seconds into the race, while all are still on their first lap, they have spread out so they are at four corners of a square. How many seconds ... 
Maths
In the country Fivethree, they have only $3 and $5 notes. How many amounts, from $1 to $100 inclusive, cannot be made up exactly with these notes? A. 2 B. 3 C. 4 D. 7 E. 21 
chemistry
A single, neutral iodine atom has 
College Physics
A car of mass 1000 kg is traveling at a constant 25.0 m/sec along a straight, level highway. There is a force of thrust acting on it in the forward direction (the direction the car is moving) of 3000 N. There are drag forces and forces of rolling friction opposing the motion ... 
Math
A water cooler can hold 40 litres of water when full what fraction of water is left in the cooler if 16 litres is used? 
geometry
Jose is planning to spread fertilizer on his rectangular yard.His yard has a length of 40 ft and width of 25 ft.How much fertilizer does he need 
Math
Printer A prints 50 cards per minute while Printer B prints 40 cards per minute.How long will it take both printer working simultaneously to print 1350 cards together? 
math
a , c and d @steve 
math
Select the equation in which the graph of the line has a positive slope, and the yintercept equals 8. Question 1 options: 5x + y = 50 5x  10y = 12 x  2y = 10 10x  5y = 40 
math
100 ft rope is cut in two pieces so that the larger piece is 2 less than twice the shorter piece. What is the length of the larger piece? 
math
What would you need to multiply by in order to solve this system of equations using the linear combination (elimination) method? {6x?2y=4 7x+5y=3 Multiply the 1st equation by 3 and leave the 2nd equation alone. This will eliminate the y's when you add the two new equations... 
English
cultural 
English
The play "Latins in LaLa Land" would be an example of _____. Question 8 options: A) Historical Theatre B) Political Theatre C) Cultural Theatre ** D) Commercial Theatre 
math
that makes no sense to me 
math
Which function grows the fastest for large values of x? f(x)=1.5x f(x)=8x f(x)=3x f(x)=4x2+3 
math
add x^2 to each side? @steve 
math
Jimmy began deriving the quadratic formula as shown. ax² +bx +c = 0 x² +b/ax+c/a=0 x² +b/ax=?c/a x² +b/ax+(b/2a)² =?c/a+(b/2a)² What should Jimmy do next? Subtract x² from each side. Factor the trinomial. Add x² to each side. Subtract ... 
English
i think its denouement 
English
My bad. It was in "The little foxes" 
English
A raisin in the sun. Regina allows Horace to die. A) Falling Action B) Climax C) Resolution D) Denouement 
Math Algebra
Ann is 8 years older than Dawn. Dan is 5 years younger than Dawn. The sum of their ages is 108. How old is Dan? Please explain work too. 
chemistry
How many grams of ammonia are produced when 32g of nitrogen react with excess hydrogen? N2 + 3H2 > 2NH3 
LA
What is the climax of Mieko and the fifth treasure. 
Physics
Two pellets, each with a charge of 0.80 microcoulomb (8.0×10?7 C ), are located 2.8 cm (2.8×10?2 m ) apart. Part A Find the electric force between them. 
algebra
What is the domain for f(x)=8(2)^x 
life
what is gay? 
Math
Hi Steve Actually the diagram given is already drawn in 2D!. I couldnt figure out that if I think in 3 D then T is above point A and will make a right angle with the lines AB and AC Thanks so much for opening my eyes and helping me visualize the diagram from a different angle... 
Math
Thanks Steve, BUt How do you know its a right angled triangle so that you can apply tan 
Math
A, B and C are 3 points on the level ground.B is due south of A . The baering of C from A is 085. A vertical mast of height 50m stands at A. The angle of elevation of T from B is 44 and the angle of elevation of T from C is 28 Calculate AB,AC, CB 
Algebra
The Community Recreation Center is developing plans for a new sports facility. Community members can submit suggestions for the new facility, along with basic scale drawings of their ideas. Elena wants to include a new 15 by 30meter basketball court in the athletic center. ...