Posts by Tammy
Total # Posts: 683

Math
I need help solving systems using elimination 3 * 3y equals  3 2x minus y equals 5 how do I do this do not know algebra 
Chemistry
Please explain in detail where is 3 and 12 come from since you said n=163•3/12 Thank you 
Chemistry
What volume in liter will be occupied by 162.3 g of carbon monoxide at 273k and 760 torr? 
Math
On a map scale is shown is 1 inch equals 5 miles. If an island is 2.5 in.² on the map what is the actual area of the island 
Math
76.81145748 
Physics
A ball is thrown straight up at 13.0 m/s near the edge of a 30.0meter high cliff. The ball lands at the bottom of the cliff. a) What is the acceleration of the ball just after it is thrown (magnitude and direction)? b) What is the acceleration of the ball at the peak of its ... 
Mental Health Diagnosis and assessment
Correct Answer: D. A and B 
Math
How you can quickly calculate the mean of the following test scores without adding the numbers. 76,73,78,75 
Math
Megan read an average (mean) of 2 books a day for 4 days. How many books will Megan need to read on days five and six so that she can say that she read an average of 3 books a day over 6 days? 
algebra
The denominator of a fraction is 3 more than twice the numerator. If both the numerator and denominator are decreased by 7 and the simplified result is 7/19 find the original fraction 
Chemistry
Human blood contains glucose at a typical concentration of 0.100% (W/V). At this concentration, how many grams of glucose would be found in one liter of human blood? 
math
Fred has 3 times as many dimes as quarters. How many dimes does he have if the value of all the coins is $3.85? 
statistics
Janet has a jar with 8 gold marbles 12 silver marbles and 4 bronze marbles is she chooses two marbles without replacement, what is the probability that she chooses two silver marbles. I think the answer is 11/46 but not sure how to work the prboem 
Science
Write the ionic equation for dissolution and the Ksp expression for PbC12. 
Math
Let f(x)= 3x+4 and g(x)= x^2 +4x+1. Find and simplify g(k) 
Math
Give an example of a function from everyday life.(fill in blanks):______ depends on_____, so _____is a function of _______. 
Math
Simplify each expression. Sqrt of 128m^3n^5/sqrt of 81mn^7 
Chemistry
Among the solubility rules previously discussed is the statement: Carbonates, phosphates, borates, and arsenates—except those of the ammonium ion and the alkali metals—are insoluble. (a) Write the expression for the equilibrium constant for the reaction represented ... 
Math
If driving 50 mph how fast would the person 1 mile behind them have drive to catch up with them 
Physical science
What is the wavelength of a standing wave in cm, if the separation between two adjacent nodes is 13.7cm? 
algebra
I have a rebus puzzle it says THRU in bold print and AND in regular print THRU AND PLEASE HELP! ! 
Chemistry
Write the equation for the reaction of iron and oxygen. Label the oxidizing reagent, the reducing agent, the reduced element, and the oxidized element. 
College Algebra II
The midpoint of the line segment from P1 to P2 is (1,3) if P1 is (5,2) what is P2 
Quantative reasoning
Write the formula for the total cost of renting a fullsized car when the unlimited mileage charge is added. 
Life orientation
Identify your human rights violation or discrimination and explain in and introductory paragraphs why you the specific human rights violations or discrimination 
Chemistry
In the production of carbon disulfide (CS2), carbon (C) and sulfur dioxide (SO2) are reacted. If 8.00 g of sulfur dioxide reacts, how many moles of carbon dioxide are produced? 
stat
smith is a weld inspector at a ship yard. he knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done will be substandard. If smith checks 300 of the 7500 welds completed that shift, what is the probability that he will find less... 
Math
A 20 foot piece of rope will be cut into as many 3 and 1\2 foot section as possible. how much rope will be left over? 
chemistry
How many joules of heat are removed to completely covert 70.0 grams of water to ice at zero Celcius? 
chemistry
How many moles of gas must be forced into a 5.0 L tire to give it a gauge pressure of 33.6 psi at 28 ∘C? The gauge pressure is relative to atmospheric pressure. Assume that atmospheric pressure is 14.8 psi so that the total pressure in the tire is 48.4 psi . PV = nRT 48.... 
Prob/Stats
First write out what you know in order to get the formula: x = # of movie goers 44% of movie goers eat popcorn so 44% of movie goers = movie goers who eat popcorn Out of 17 movie goers how many will eat popcorn? 44% of x = 44% of 17 = 7 movie goers who will eat popcorn But the... 
Math
50 lbs of oats @$2 a pound = how much 
Chemistry
how to write a balanced equation for the following reactions with amounts of released or absorbed heat expressed in numbers within the equation 1 mole of methane with O2 yields CO2 and H2O and releases 213 kcal of heat 
astronomy
what is the altitude which you'll find 99% of the atmosphere's mass? Assume P=1 atm, atmosphere T=290 K and the atmosphere is mostly N2. 
Math
What did the baby buzzard say when it saw an orange in the nest I got misspelled jumbo 
Physics PLEASE HELP!!
Yes 
calculus
Find the area bounded by the curve y=1/2+2, the xaxis, and the lines x=1 and x=4. a.7 1/2 b.10 2/3 c.16 d.28 1/2 
Statistics
0.019 
IDOC
1/b (2b10)=17 
Chemistry
consider the reaction at 298K. 2H2S(eq) + SO23S(s) + 2H2O (g). Calculate Grxn under these conditions. PH2S=2atm Pso2 =1.5 atm PH2O + 0.01atm 
Middle Math
My math calculator prompted me with this question 6E7. My answer to this question is 0.00000007 
science
I'm doing a lab for Le Chatelier's Principle. I'm concerned that all my answers sound very similar. Can someone help me and let me know if my answers are making sense? ~Thanks 1.) How is the reaction Zn(OH)2 <=> Zn^+2 + 2OH affected by adding OH I think ... 
math
Susie uses 1/2 to help compare 1/3 to 3/5 and to help in comparing 3/7 with 2/3. Explain how 1/2 help determine which fraction is greater in each combination. 
algebra
two planes which are 1695 miles apart fly towards each other,their speeds differ by 65 mph,if they pass each other in 3 hours, what is the speed of each 
algebra
A 24 meters pole is held by a three guy wire into vertical position. Two of the guy wires are of equal length. The third wire is 5 meters longer than the other two and is attached to the ground 11 meters farther from the foot of the pole than the two equal wires. Find the ... 
Algerba
A newspaper carrier has %5.75 in change. He has ten more quarters than dimes but two times as many nickles as quarters. how many coins of each type does he have? 
math
Emily spent 1/2 of her money at the grocery store. Then, she spent 1/2 of what was left at the baker. Next she spent 1/2 of what was left on a cd. She spent the remaining $6.00 on lunch. How much money did she start with ? 
Business Math
Compute Brianna's estimated tax payment for the third quarter. She is selfemployed and she expects to earn $84,400 this year. Her estimated income tax rate is 22%. For selfemployed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of... 
Business Math
Using the dating method, calculate the discount date and the net date. Unless otherwise specified, the net date is 20 days after the discount date: The date of invoice is April 6th, Terms of sale is 2/10, EOM. What is the Discount date? What is the Net date? 
Math
jody has a rectangular piece of fabric 7/8 yard long and 4/5 yard wide. What is the area of the piece of fabric 
Intro to Chemistry
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3(s)+2HCl(aq)=CaCl2(aq)+H2O(l)+CO2(g) How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 11.0 g of ... 
Intro to Chemistry
Given the following chemical equation, determine how many grams of N2 are produced by 8.58 g of H2O2 and 5.62 g of N2H4. 2H2O2(l)+N2H4(l)=4H2O(g)+N2(g) 
finance
Bill is a restaurant manager that falls into the 25% marginal bracket and pays an additional 5% for state taxes. He has invested 20,000 in corporate bonds which is currently earning a annual return of 7.5%. What is the after tax return on bill's corporate bonds for the year? 
judicial system
Explain how a defendant may be processed through The Missouri judicial system. I have searched the internet and I can not information on this. 
Law
•When should a status offense become a delinquent act? 
business law
two of these 
physics
5pi over 4 
algebra
F=9/5C+32 What is celcius 
chemistry
kilojoules released when 90.0 g of steam condenses at 100 ?C, cools, and freezes at 0 ?C 
math
In October, a HARDWARE STORE purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December, the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up 15%. In March, the ... 
Chemistry
Write an equation for the reaction that takes place when each base is added to water. A) LiOH B) (CH3)2NH. 
english 4
I need to identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective complement) and the prepositional phrases of the following sentances. Those mustard pickles are to sour for me. 
statistics
a. Interrater RELIABILITY 
Biology
How many calories are required to heat 10 ml of water from 25 degrees Celsius to 35 degrees Celsius? 
personal finance
If you believe that a firm will grow rapidly in the future, you should buy its? a. common stock b. notes c.preferred stock d. notes 
Statistics
The height of a certain species of a tree are normally distributed with a mean of 30ft and stand dev of 4ft. If a random sample of 16 of these trees is taken, what is the probability that the sample mean is less than 32fy? 
chemistry
how many mL of 1M HCL is used to make: 100mL of 0.1M hcl 250Ml OF 0.5M hcl 10Ml OF 0.01m hcl 
personal finance
The interest rate is composed of _____ and the ______? a. riskfree rate,risk discount b.risk free rate, risk premium c.risk free rate, default risk premium d. none of the above 
Statistics
List five numbers for which the sample mean is 30 and not all numbers are equal and would have a mean of 30 but all numbers are equal 
algebra
Solve the compound inequality graph solution 6x4<34 or3x+10>10 
algebra
Solve the inequality graph solution 5r+4<5 
algebra
Solve the equation or formula for the indicated variable S=5rTf foRT answers are T=s/5r,, T=25r/s,, T=r25s,, T=s/5r2 
Billy the kid Essay
Need Help Writing he body of my essay. approximately 550 to 750 words 
Texas Southern University
In a respresentative study,a sample of n = 100 adolescents with a history of group participation is given a standardized selfesteem questionnaire. For the general po;ulation of adolescents, scores on this questionnaire form a normal distribution with a mean of u = 40 and a ... 
Finance
Thank you. 
Finance
You are given the choice of $4,000 in extra taxable income per year or a taxexempt medical policy. The medical policy costs $300 per month. Your tax rate is 25%. Considering financial factors only, should you take the cash or the medical policy? 
math
Thank you. 
math
How does the phrase "send the base to the basement". refer to the change of base formula? 
PHYSICS URGENT HELP
charges 
PreCalculus
It is going to be a 1/5 
History
Which of the following was Eisenhower's most significant legislative achievement? A. The Highway Act of 1956 B. The establishment of modern Republicanism C. The extension of Social Security benefits D. Increasing the minimum wage 
Math
Please explain why you can't write a multiplication sentence. 
Math
Marlon has 4 baseball cards, Jake has 4 baseball cards and Sam has 3 baseball cards. Can you write a multiplication sentence to find how many baseball cards they have altogether? Explain. 
Physics
A radiocontrolled car increases its kinetic energy from 8 J to 10 J over a distance of 6 m. What was the average net force on the car during this interval? 
Physics
A 0.5 kg airhockey puck is initially at rest. What will its kinetic energy be after a net force of 0.8 N acts on it for a distance of 0.5 m? 
Physics
What is the kinetic energy of a 1100 kg sports car traveling down the road with a speed of 22 m/s? 
Physics
A man travels 7km due north,then 10km due east.find the resultant displacement. 
Algebra 1
A man built a house costing 9 times as much as the lot on which it was built. If the lot cost $5, 000 less than 1/6 the cost of the house, what was the cost of each? 
Algebra 1
The length of the shadow of a building is 2 feet more than 2/3 the height of the building and it is also 12 feet less than the height. How high is the building? 
Algebra 1
A basketball team won 16 games, or 4 less than 2/3 of the games they played. Find the number of games they played. 
math
The cost, y, of renting a canoe can be shown by y+12x + 30 where x is the time in hours. Identify the y intercept as an ordered pair and explain what it means in terms of the problem. 
STAT
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 5 and a population standard deviation 2 and a sample size of 4. Machine 2 has a sample mean of 10 and a population standard deviation of 2 with a sample size of 64. ... 
algebra
Lol umm I was wondering to 
STAT
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 15 and a sample standard deviation 6 and a sample size of 18. Machine 2 has a sample mean of 12 and a sample standard deviation of 6 with a sample size of 18. With an... 
physics
A rollercoaster car with a mass of 550 kg starts at rest from a point 46 m above the ground. At point B, it is 23 m above the ground. [Express your answers in kilojoules (kJ).] (a) What is the initial potential energy of the car? Incorrect: Your answer is incorrect. . kJ (b) ... 
Physics
a hockey puck slides across the ice at a rate of 11 m/sec and covers a distance of 70 meters. How long does it take the puck to travel 70 meters. also calculate the acceleration of the puck. 
English
Which of the following statements about literary movements is not true? 
math
Ned’s Sheds purchases building materials from Timber town Lumber for $3,700 with terms of 4/15, n/30. The invoice is dated October 17. Ned’s decides to send in a $2,000 partial payment. By what date must the partial payment be sent to take advantage of the cash ... 
Intro to Healthcare Statistics
Discuss how statistics are generated and how statistical information is used by healthcare organizations. Explore the NC State Center for Health Statistics at the following website and discuss at least two types of statistic health information that NC collects. 
Business Math
Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)