Posts by Brandon
Total # Posts: 1,097

Chemistry
Some solid CaO in a test tube picks up water vapor from the surroundings to change completely to Ca(OH). An observed total initial weight (CaO + test tube) of 10.860 g goes eventually to 11.149 g. What is the weight of the test tube? 
algebra 2
find an equation for the line satisfying the given conditions Yintercept 8 and perpendicular to 3xy +11=0 
Maths
A guitarist earns a royalty of 22% of the selling price of a CD. If he earns $2.64 on each CD sold, what is the selling price of the CD? 
Math
A 512 page book has pages 7 inches wide by 9 inches high. The printed area measures 5.375 iches by 7.75 inches. The left margin is 0.3125 inches and the top margin is 0.5625 inches How wide are the margins at the bottom of each page? 
Chemistry
CaCl2 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered and weighed. The balanced equation for the reaction is: CaCl2 (aq) + 2 AgNO3 (aq) ? 2 AgCl (s) + Ca(NO3)2 (aq) 
Chemistry
*answer 
Chemistry
Can I get an asnwer for this? 
Chemistry
Consider the following reaction: 2NOCl(g) 2NO(g) + Cl2(g) Initially pure NOCl(g) is placed in a vessel at 2.96 atm. At equilibrium, 0.410% of the NOCl has decomposed. Determine the value for Kp. 
Algebra
4x4b=x x x 3x4b=0 +4b +4b 3x=4b x=4b/3 b=3x/4 
stats
I'd say that you have a 1/10^3 chance of correctly getting the number right, since there are three numbers and 10 numbers to choose from each time. 1/10 x 1/10 x 1/10, right? 
Math
im still confused 
Math
7. The value of a computer has a decay factor of 0.85 per year. After 2 years, the computer is worth $1445. What was the original value of the computer? 
Math
6. A motorcycle purchased for $12,500 today will be valued 7% less each year. How much could you expect to receive for the motorcycle at the end of 4 years if you wanted to sell it 
Data
You got 0.353 because of the decimals they were rounded up, so technically your answer is correct, if your teacher is decent than he would mark your answer right because its close enough. 
physics
3.8 
Math (Statistics)
In exercise 12, the following data on x = average daily hotel room rate and y = amount spent on entertainment (The Wall Street Journal, August 18, 2011) lead to the estimated regression equation ? = 17.49 + 1.0334x. For these data SSE = 1541.4. City: Boston Denver Nashville ... 
Math
If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 1 doesn't grow? Here What I did I thought its premutation but some reason I got that wrong, I multiple by (0.10) and (0.70) of the seeds ... 
Math
How many CDs will a salesperson need to sell to make $52.80 in commission if the commission rate is 8% and the CDs sell for $12 apiece? I needed help I thought it has something to do with equation but guess not. 
Math (Statistics: Test Statistic, Proportion)
The Pew Research Center Internet Project, conducted on the 25th anniversary of the Internet, involved a survey of 857 Internet users (Pew Research Center website, April 1, 2014). It provided a variety of statistics on Internet users. For instance, in 2014, 87% of American ... 
Math (Statistics)
The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .30. a... 
Fluid Mechanics
A hot air balloon carries a load of 1000 N including its own weight. The balloon is 10 m in diameter. Estimate the average air temp of the air inside the balloon if the air outside is 20 is 20 deg C. 
Math
Construct the amortization schedule for a 15,000 debt that is to be amortized in 10 equal semiannual payments at 6% interest per halfyear on the unpaid balance 
Math Written Assignment
He has decided to remove all the old sod (grass), bring in a new 4 inch layer of topsoil, install new inground sprinklers, and reseed the lawn. He seems to think that he'll be able to save money by hauling loads of topsoil from the store himself in his pickup truck, ... 
Math
In Portland, the tax on a property assessed at $590,000 is $6,490. If tax rates are proportional in this city, how much would the tax be on a property assessed at $710,000? 
Math
If Leah walks 5 miles in 60 minutes, then Leah will walk how far in 110 minutes if she walks at the same speed the whole time? If necessary, round your answer to the nearest tenth of a mile. 
Math
Mr Shelton is building a fence around the edge of the pool. The pool is 20feet and 16 feet wide. How much feet if fencing will Mr.Shelton need to build around the pool? 
science
If you are here after the test I want to say good job... getting a 3/5 :) 
science
For simple minded people who sit there and don't do the work here are the answers to start of the unit here are some notes ANSWERS HERE YOU LITERALLY DIVIDE INTO A CALCULATOR. It took me about 15 min 1) A 2) C 3) A 4) D Friction is a force that opposes motion and wastes ... 
math
the product of helena's age and 4 is 76 
Chemistry
How much energy (in kilojoules) is released when 29.0 g of ethanol vapor at 88.0 ?C is cooled to 10.0 ?C? Express your answer to two significant figures. q = ______________ kJ Ethanol has mp = 114.5 ?C, bp = 78.4 ?C, ?Hvap = 38.56 kJ/mol and ?Hfusion = 4.60 kJ/mol. The molar... 
Chemistry
Explain why olive oil has a higher viscosity than water, by selecting an appropriate word from the provided list and filling in the following blanks. Oleic acid has a higher viscosity than water because it is a much________ molecule than water with ________ ________. List of ... 
Math
Jill's fish weighs 8 times as much as her parakeet. Together the pets weigh 63 ounces. How much does the fish weigh? 
Math
Mrs. Scott decided that she would spend more no more than $120 to buy a jacket and a skirt.If the price of jacket was $20 more than 3 times the price of the skirt.Find the highest possible price of the skirt. I have the answer but they add another variable which is never ... 
math
Joan babysits for 6 dollars per hour. 
math
Water weighs about 8 pounds per gallon 
Math
The point (5,2) in on the terminal side of an angle t. Find cos 
Physics
an astronaut throws a ball with mass m to the right with speed v. It strikes the wall of the space station and rebounds, moving left with a speed V/2. What was te magnitude of the impulse of the ball caused by the collision? Any help would be greatly appreciated 
Algebra II
the hypotenuse of a right triangle is 25 inches and the height is 5 inches more than its base. what is the height of the triangle? 
AP Physics 2
Identical point charges of +3.3 µC are fixed to three of the four corners of a square. What is the magnitude q of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force of zero? 
Math Physics Torque Equilibrium
A uniform meterstick pivoted at its center has a 100 g mass suspended at the 21.0 cm position. At what position should a 95.0 g mass be suspended to put the system in equilibrium? What mass would have to be suspended at the 80.0 cm position for the system to be in equilibrium? 
algebra
Molly deposits $200 in a savings account that has a 20% interest rate compounded annually. What will be her total after 3 years? 
chemistry
is heating iodine from its solid state to a liquid state a chemical or physical change? 
Math
Translate the sentence into an equality. The sum of a number times 5 and 27 is at most −26. 
Science
i dont know 
Probability
A customer at Cavallaro’s Fruit Stand picks a sample of 3 oranges at random from a crate containing 60 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges? 
U.S Histroy please help me
1 c 2 a 3a 4 d 5 d 6 b 7 b 8 d 9 d 10 b 11 a 12 d 13 c 14 b 15 d 16 a 17 a 18 c 19 c 20 d you were wrong in a lot of places 
Math
Josie wants to tile one square section of her countertop. She bought 850 tiles with side lengths of 1 inch. A. What is the largest side length of that countertop she can tile? Round to the nearest whole inch. B. How many tiles will she have left over? 
Math
A ball is thrown striaght up from a height of 3 ft with an initial velocity of 40 feet per second. How high will the ball go? Assume that the only force acting on the ball is gravity where the acceleration due to gravity is 32 feet per second per second. 
math
A certain minivan has a maximum carrying capacity of 1,200 pounds. The luggage weighs 150 pounds. Write an solve an inequality to find the maximum weight allowable for passengers. I got x+150 >= 1200 Im not sure if it's correct 
math
Kim is 15 more than three times her nephew’s age. If Kim is 36, how old is her nephew 
Chemistry
aCETYLENE REACTS WITH OXYGEN GAS TO PRODUCE CARBON DIOXIDE GAS AND WATER VAPOR 
Finance
What is the amount of money created in the banking system due to an initial deposit of $1,000 if the required reserve is 5%? The banks are not holding any excess reserves. 
Finance
Calculate the annualized rate of return on a 200day commercial paper. This loan does not pay periodic interest; it is a discount security. The face value of the paper is $1 million and the current market value is $980,000. 
Science
How much force must be applied to accelaerate a 40 kg chair at 2.8m/s2? 
Algebra
The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units. Numerical Answers Expected! Answer for Blank 1: „ð Question 11 (Multiple Choice Worth 5 points) (03.... 
math
suppose you deposit $3000 in a savings account that pays interest in a a rate of 4%. if no money is added or withdrawn from the account, how much will be in the account after ten years. 
Physics
As a protest against the umpire’s calls, a base ball pitcher throws a ball straight up into the air at a speed of 20 m/s. In the process, he moves his hand through a distance of 1.47 m. The acceleration of gravity is 9.8 m/s2 . If the ball has a mass of 0.18 kg, find ... 
Statistics
10*8*13= 1,040 
physcial science
30 turns 
Westside K  8
The sandbox has an area of 26 square feet in the length of five and a half feet what is the width of a sandbox? 
math
He spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings for $10. Find the number of paintings (p) he will need to sell to break even. 
Language Art
Heart of the army 
math
A internet movie rental company has two different options for renting movies. Option A: pay a onetime $40 membership fee and then pay $1 for each movie rental. Option B: Do not become a member and pay $6 for each movie rental. 1. Write an expression to represent the Total ... 
algebra
An experiment consists of spinning a spinner. The odds in favor of the spinner landing on an even number are 3:7. What is the probability that the spinner will not land on an even number? Type your answer as a decimal. 
Physics
A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 34.1 m/s. At the same time, it has a horizontal velocity of 51.1 m/s. At what speed does the vehicle move along its descent path? 1.Answer in units of m/s. 2.At what angle with the ... 
math
F= 9/562+32 
math
A football field is 72 yardsyards long and 46 yards wide what is the area of the field in squ are yards 
GeometryHelp Please
Use the compass and the stright edge to see what the other angle is then make a complementary and adjacent angle to it 
statistics
DID YOU FIND THE ANSWER FOR THESE QUESTIONS? 
Math (PLEASE HELP!)
Thanks so much for your help. 
Math (PLEASE HELP!)
I need help for part b though. 
Math (PLEASE HELP!)
The temperature of an enclosure for a pet snake should be about 27°C, give or take 3°C. (show your work) a) What absolute value expression can be used to represent this situation? b) Use the expression to determine the temperature range the enclosure should have. 
College Chemistry
I think the half reactions are: Fe2+ > Fe3+ + 1e Oxidation? Cr3+ + 1e > Cr2+ Reduction? I don't know the E0 for each... and I know to be spontaneous: E0cathodeE0anode where it is postive... 
College Chemistry
For the reaction that occurs in the voltaic cell Fe(s)Fe2+(aq)Cr3+(aq),Cr2+(aq)Pt(s) use data from Appendix D in the textbook to answer the following questions: a)Determine the equation for the cell reaction b)Determine E0 cell c)Determine ΔG0 d)Determine K I'm ... 
civics
What amendment states "you have the to bare arms"? the 3rd amendment. 
Physical science
A hydraulic lift is used to lift a heavy machine that is pushing down on a 3.0 m2 piston A1 with a force F1 of 1200 N. What force F2 needs to be exerted on a 0.090 m2 piston A2 to lift the machine? im having problems tring to solve it can you please help me? 
math
17,830.80 
math
How do you find the slope for the direct variation equation y=11x 
Chemistry
How many grams of CO(g) are there in 67.0mL of the gas at 0.826atm and 30 ∘C? 
math
my teacher keeps saying there is some formula or equation to solve this? Do you know. 
math
Find the value of each markup or discount. Original: $20.00 percent of discount: 40% 
math
How do you solve percent of change? My problem says identify the percent of change as an increase or decrease. Find the percent change. Round to the nearest 10th. 20 to 25 
Math
A bag contains 1 red, 7 black and two yellow marbles. What is the probability of selecting 1 yellow marble, not replacing it then selecting another yellow marble? How do you solve this? 
math
One is 2% of what number? 
Math
what is 30% of 90? How do I solve with out calculator? 
Math
Sam needs to cut a piece of sheet metal into 8 pieces. All the cuts are made in the same direction. It takes him 5 min. to make each cut. How many cuts will Sam make? 
math
it takes about 20 minutes to grade a student's paper. How long, in hours, does it take to grade papers for a class of 25 people? 
6th Grade Math
What is the rational number between 1/3 and 5/6 
Math
arnold buy 8/9 pound og ground turkey. he uses 3/4 pound of the ground turkey to make meatballs . how many pound s of ground turkey are left 
Physics
A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 187.0 N at an angle of 25.0◦ with the horizontal. The box has a mass of 36.0 kg, and the coeﬃcient of kinetic friction between the box and ﬂ... 
algebra
an access ramp has a height of five feet and a horizontal distance of 60 feet. find the length of l of the ramp tothe nearest tenth of a foot 
algebra
a support wire 12 yardslong is attached to the top of a utility pole 10yards tall and is then stretched out. to the earest tenth of a yard,find how far from the base of the pole wire will beattached to the groundbreaking 
algebra
the lengths of two sides of a right triangle are given. find the length of the third side. a=9,c=41 
Social studies
What is the acrostic poem for Bill of Rights? 
science
A 7E+3 kg object is 9.29 m away from a 4.7E+8 kg object. What is the gravitational force between the two objects? 
math
A grocery store sells snacks by weight. A six ounce bag of mixed nuts costs $3.60. Predict the cost of a ounce bag 
sixth grade math
1500 
Math
43.99 
thermal energy states of matter
Lengths of railway tracks have small gaps between them. Why are they built this way and what might happen if there were no gaps 
Chemistry
The answer is 168kJ