College

College Algebra
simplify expression (no negative exponents) -2^-3(xy^3)^-2/x^-1y^-3 I got 1/-8x^2y^2

College Algebra
factor completely: 16x^2 + 16x-21 I got not factorable...

College algebra
A seamstress is designing a triangular flag so that the length of the base of the triangle, in inches, is 7 less than twice the height h. Express the area of the flag as a function of the height. I have figured out the area, but i'm not sure what the question means when it ...

College Algebra
1 - 1 = 1 ______________________________________ 4x-12 2x-6 x^2-3x Solve the equation (its subtracting the first two fractions and equalling the last fraction)

College Algebra
Use quadratic formula to solve: 5x^2-10x+6=0

College algebra
A seamstress is designing a triangular flag so that the length of the base of the triangle, in inches, is 7 less than twice the height h. Express the area of the flag as a function of the height.

College Algebra
Consider two circles. A smaller one and a larger one. If the larger one has a radius that is 8 ft longer than the smaller one, and if the ratio of the circumference is 3:1, then what are the radii of the two circles?

College Algebra
write in standard form a+bi: (2+3i)^3

History
1) Which of the statements describes someone who would have been most likely to move to New Mexico after World War II? A)a Pueblo woman who lives near Santa Fe B)a college student in nearby Colorado C)a pilot who trained at Kirtland Air Force Base during World War II D)a ...

College algebra
Curt can be paid in one of two ways for the sales he generates: Plan A: 900$ per month plus 10% sales commission. Plan B: $1200 per month plus 15% commission on sales above $8,000. Assuming he always exceeds $8,000 in sales, for what amount interval of $ sales is Plan B better?

college algebra
Marissa is designing a rectangular poster whose width is 2/3 of its height. Its perimeter will be 100 inches. what are the dimensions of the poster?

college algebra
A freight rain leaves a station and travels north at a constant rate of 60 mph. One hour later a passenger train leaves the same station traveling north on a parallel track at 80 mph. How long will it take for the passenger train to draw even with the freight train?

St Teresas College
Subject:Chemistry What is the difference between seawater and pure water in terms of osmotic pressure and vapour pressure?

St Teresas College
What would be the difference between seawater and pure water in terms of osmotic pressure and vapour pressure?

Kabe college
What is the resultant of two equal forces of magnitude f,acting at right angles to each other

College Algebra
Find the time required for an investment of 5000 dollars to grow to 7900 dollars at an interest rate of 7.5% per year, compounded quarterly

College Algebra
A wooden artifact from an ancient tomb contains 45% of the carbon-14 that is present in living trees. How long ago, to the nearest year, was the artifact made

college chemistry
From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go about this question, ...

college chemistry
From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go about this question, ...

green valley college
automotive airbags inflate when sodium aside NaN3 Rapidly decomposes to its consistent elements. the equation for the chemical reaction is NaN3=Na+In2 The gaseous N2SO generated inflates the airbag. How many moles of NaN3 would have to decompose in order to generate 253 ...

green valley college
the principal constituents of natural gas is methane which burns in air according to the reaction CH4+O2=CO2+H2O How many grams of CO2 is produced when you have 50g of both CH4 and O2 what is the limiting reactant?

L.A
Which of the following expresses a main idea from Always to Remember? a.Maya Ying Lin was a talented and smart college student who became a designer. b.Maya Ying Lins family life, travel experiences, and education provided her a background necessary for a winning design. c....

statistics
Pharmaceutical companies advertise for the birth control pill an annual efficacy of 98.6% in preventing pregnancy. However, under typical use the real efficacy is only about 95%. That is, 5% of women taking the pill for a year will experience an unplanned pregnancy that year. ...

probability
The National Center for Educational Statistics reported that in 2009 the ACT college placement and admission examination were normally distributed and had a mean of 21.1 and standard deviation of 5.1. A college requires applicants to have an ACT score in the top 20% of all ...

College Physics
A snowball off a roof that slopes downward at an angle of 40degrees. The edge of the roof is 14 m above the ground and the snowball has a speed of 8 m/s as it rolls off the edge of the roof. If a 1.8 m tall man is standing 4 m from the top of the edge of the roof, will he be ...

College Algebra
Randall is 105 years old. Colleen is 5 years old. How many years until Randall's age is 5 times Colleen's age?

physics
In college softball, the distance from the pitcher's mound to the batter is 43 feet. If the ball leaves the bat at 105 mph, how much time elapses between the hit and the ball reaching the pitcher? I figured out how many ft there would be in a second, but I'm not so sure where ...

college algebra
The total yearly food bill for a family of four is $9395.59. To the nearest cent, what is the mean weekly food bill?

U.S history
Was Slavery the basis of freedom in colonial America? This what I hvae written I feel like its to much and would like to shorten it and make it sound more college level plz help. In colonial America slavery was the basis of freedom. In areas such as Europe and foreign ...

Writing
Please check this thesis statement. Thesis: While some college students want to be completely independent by leaving home, it is worthy to note that dependence is necessary at times.

college algebra
195, 176, 215, 200, 189, 232, 201 mean= median= mode= 25% percentile= 75% percentile= maximum= minimum= range=

Writing
I concede that my thesis is vague. This is still vague to me. What are these "essential life skills"? If you list some (and make them specific), I'll help you work them in. • Re-write: Through their difficult times in college, students will be armed with perseverance and ...

college algebra
Country CO2 Emissions (tons of carbon dioxide) 2012 population  Emissions per Capita  China 8,782,000,000 1,359,750,000    United States 5,144,000,000 316,597,000   India 2,185,000,000 1,233,460,000  Russia &#...

college algebra
In Japan, there were 94,848 deaths attributed to heart disease and the population of Japan is about 128 million. If the United States were able to reduce its number of deaths to be proportional to that of Japan, about how many deaths due to heart disease would be expected? (...

Writing-Writeacher
This is still vague to me. What are these "essential life skills"? If you list some (and make them specific), I'll help you work them in. • Re-write: Through their difficult times in college, students will be armed with perseverance and determination which allow them to cope...

Writing
This is still vague to me. What are these "essential life skills"? If you list some (and make them specific), I'll help you work them in. • Re-write: Through their difficult times in college, students will be armed with perseverance and determination which allow them to cope...

Writing
Please check my rewrites (the ones with a black dot/bullet). Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I think this is debatable because the other side could argue that the success of a child ...

college algebra
Are total emissions or per-capita emissions a better gauge when comparing the CO2 emissions of various countries? Why?

college algebra
In Japan, there were 94,848 deaths attributed to heart disease and the population of Japan is about 128 million. If the United States were able to reduce its number of deaths to be proportional to that of Japan, about how many deaths due to heart disease would be expected? (...

college algebra
According to the CDC there were 597,689 deaths in the US in 2010 attributed to heart disease. Given that the US population in 2010 was close to 308 million, what was the death rate per capita for heart disease in the US for 2010? (round to five decimal places)

Chemistry college
You are given a recipe for a buffer that contains 5% (w/v) MgSO4.7H2O. However, you only have MgSO4 anhydrous available to you. How much MgSO4 anhydrous do you need to make 0.5L of the buffer with the same molar concentration as in the recipe? Show your calculations

college algebra
The Johnsons plan to put down all-weather carpeting on the porch. The length of the porch is 2 feet longer than twice the width, and the perimeter is 64 feet. Find the dimensions of the porch.

college algebra
In the state of Indiana, 192,031 people claim not to speak English very well. If this is 3.2% of the population of Indiana residents aged 5 years and older, estimate the population of Indiana residents aged 5 years and older. (round to the nearest person)

college algebre
There are approximately 314 million people in the U.S. If the world population is 7.1 billion people, what percent of the world population is in the U.S.? (round to one decimal place)

Writing
Please check my rewrites (the ones with a black dot/bullet). Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I think this is debatable because the other side could argue that the success of a child ...

Writing
Please check my rewrites (the ones with a black dot/bullet). Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I think this is debatable because the other side could argue that the success of a child ...

Writing
Formulate a workable thesis statement for each of the following general subjects and topics. Please give me some feedbacks on my thesis statements. Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I ...

Writing
Formulate a workable thesis statement for each of the following general subjects and topics. a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. b. The difficulty of adjusting to college. Thesis: Despite the difficulty ...

College Chemistry
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.59 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

College Chemistry
A 43.70 g sample of a substance is initially at 24.7 °C. After absorbing 1757 J of heat, the temperature of the substance is 120.5 °C. What is the specific heat (c) of the substance?

College Chemistry
The specific heat of a certain type of cooking oil is 1.75 cal/(g·°C). How much heat energy is needed to raise the temperature of 2.83 kg of this oil from 23 °C to 191 °C?

College Chemistry
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 5.43 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

satistics
Among a random sample of 500 college students, the mean number of hours worked per week at non-college related jobs is 14.6. This mean lies 0.4 standard deviations below the mean of the sampling distribution. If a second sample of 500 students is selected, what is the ...

math
A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 560 college students showed that 27% of them had, or intended to, cheat on examinations. Find the 95% confidence interval. A. 0.2323 to 0.3075 B. 0.2325 to 0.3075 C. 0.2325 to 0....

College Algebra
An executive invests $26,000, some at 8% and some at 6% annual interest. If he receives an annual return of $1,800, how much is invested at each rate?

College Physics
At a firing range, a target is placed 300 m from where someone is firing a rifle. The muzzle speed of this rifle is 700 m/s. If the rifle is aimed directly at the center of the target, by how far will the target miss? At what angle would the rifle need to be aimed at to hit ...

College english
some hallucinogens can be found in plants. mescaline comes from a cactus called peyote. And certain mushroom, also known as magic mushrooms, are hallucinogens.But many hallucinogens are chemicals that don't occur in nature. some examples are: LSD,MDA, MDMA, PCP Topic Pattern ...

college physics
You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at an average speed of 124 m/s. How much time does it take for the impulse, which travels a distance of 1.60 m, to reach your brain?

College Algebra
how do you find the sloution of each of the following rational euations ?? ▶ 4 / m+2 - 2 / m-3 = 6 /(m+2)(m-3) ▶ 3x-2 / 5x+5 = 4x-3 / 6x+7

college algebra
A car salesperson's annual income depends on the amount of his sales. His annual income is a salary of $11500 plus 12% of his annual sales. Write a linear equation for his annual income for sales of x dollars. ( I = mx + b ). 11500=I i Don't know what is mx+b is.

hoerner college
A man sells a tv set for rs 3,450 and makes a profit 15% he sells a second tv set at loss 10%,find the cp ?

college algeb
help :) 1.) cube root of 3x^2 multiplied to square root of 2x? 2.) square root of 3+2sqrt2 multiplied to sqrt of 3 - 2sqrt2 3.) sixth root of 12 divided by (sqrt 3 multiplied to cube root of 2) 4.) 4/cuberoot of 16

College english
Don't want to forget what you learned today? Sleep on it. Naps, ideally 90 minutes long, help you register the happenings and how-to's learned during the day. Then when you catch your z's at night, your brain creates memories of the day's events. But overload your brain with ...

college algebra
Barbara has $4.40 worth of change in nickels and dimes. If she has 2 times as many nickels as dimes, how many of each type of coin does she have?

stats 200
. At a college, 72% of courses have final exams and 46% of courses require research papers. Suppose that 32% of courses have a research paper and a final exam. Let F be the event that a course has a final exam. Let R be the event that a course requires a research paper. a. ...

sita college
It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen, helium, and chlorine...

English
1. What fact best explains why it is significant that Angelou's narrative is set in 1940? A. In 1940 the united states was not yet involved in world war 2 B. In 1940 segregation of blacks and whites was still the norm *** C. In 1940 most high school students did not go on to ...

st stevens college baja
A light inextensible string passes over a smooth light pulley and masses of 3 and 7 kg are attached to its ends.the masses are released from rest when 7kg mass is 1m above a horizontal table. 1) show that 7kg mass hits the table about 5/9 seconds if released.

English
1. He is an old college buddy of mine. 2. He is an old university buddy of mine. ================ Are both OK? Which one is commonly used? Does 'buddy' mean 'friend'? Can we substitute 'friend' for 'buddy'?

lbcc
Gymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars) for a run of x pairs of cleats is C(x) = 3000 + 6x + 0.1x2 (0 ≤ x ≤ 500). Gymnast Clothing sells the cleats at $130 per pair. Find the ...

Allan Hancock College
A rectangular lot whose perimeter is 260 ft is fenced along three sides. An expensive fencing along the​ lot's length cost $ 36 per foot. An inexpensive fencing along the two side widths costs only $ 6 per foot. The total cost of the fencing along the three sides comes ...

college math
1. If a person jogs at a rate of mi/hr for hr in a week, how many calories will the person burn?

College Physics
A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating at 2.56 m/s2. How far does he go after the light turns green until he reaches a cruising speed of 10.88 m/s?

Bytco College
Calculate the volume of O2 evolved &mass of KCl formed by decomposition of 30.8 gm KClO3

college Algebra
Factoring 2a(a+3b) - 5(a+3b)

college history
What were the company towns about?

English
1. United Nations, 310, 314, 362 charter of, 311 Declaration of, 309 United States, 225, 238, 275, 289 in Big Four, 322, 325-7 in League of Nations, 299 Lend-Lease policy of, 307 Neutrality of, 305 as United Nations sponsor, 313 Universal Declaration of Human Rights, 316 “...

Reading
1. United Nations, 310, 314, 362 charter of, 311 Declaration of, 309 United States, 225, 238, 275, 289 in Big Four, 322, 325-7 in League of Nations, 299 Lend-Lease policy of, 307 Neutrality of, 305 as United Nations sponsor, 313 Universal Declaration of Human Rights, 316 “...

college algebra
Solve the following exponential equation by expressing each side as a power of the same base and then equating exponents. 31-x = 1/27

computer programming
Boardman College maintains two files—one for Sociology majors and another for Anthropology majors. Each file contains students' ID numbers, last names, first names, and grade point averages. Each file is in student ID number order. The college is merging the two departments ...

Opra college
Chemistry work........the volume of oxygen measured at stp will br produced on heating 24.5grams of potassium trioxochlorate(v)

college. physics and chemistry and mathematics
An element crystalline in face centred cubic lattice. CCalculate the length of the side of the unit cell if the radius of atom is200pm

college chemistry
The air in a typical La Crosse basement contains 53 atoms of 222Rn per liter. A. If the basement has 950 ft^2 of floor space and is 8.0 feet tall, how many 222Rn atoms are there in the whole basement? B. Assuming a total pressure of 1.00 atm, what is the partial pressure of ...

college chemistry
A piece of wood is discovered in the Amazon with a 14C/12C that is 64.3% that of living organisms. How old is it? I have no clue how to do this please help.

El camino college:math
The xyz corporation claims that there's NO DIFFERENCE in the salary of female and male workers at the Southern California plant. A human rights agency took two samples(25 each) .the male sample gad a mean of 350per week wit standard deviation of 50. The female sample had a ...

NURSING ASAP
Is nursing considered a a science major because I'm taking this course called "CHEM 1001 Chemistry and the World Around Us?" and I studying nursing in college. Please be honest. Thank you! :)

College Algebra
This exercise deals with logarithmic scales. Earthquake A had a magnitude of 8.2 on the Richter scale. At the same time an earthquake B with magnitude 4.8 caused only minor damage. How many times more intense was earthquake A than earthquake B? (Round your answer to two ...

College Algebra
This exercise uses the radioactive decay model. A wooden artifact from an ancient tomb contains 80% of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years. Round your answer to the nearest whole number...

College Algebra
4 + 5^6x = 8 (a) Find the exact solution of the exponential equation in terms of logarithms. x = (b) Use a calculator to find an approximation to the solution rounded to six decimal places. x = can any body help me out here please?

Algebra
if the number of professors in a college is p and the number of students s and there are 19 times as many students as professors, write an algebraic equation that shows the relationship Thanks for the help!

probability/please help
At a local college,147 of the male students are smokers and 343 are non-smokers. Of the female students,180 are smokers and 420 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are non-...

Statistics
A sample survey interviews an SRS of 115 college women. Suppose that 68% of all college women have been on a diet within the last 12 months. What is the probability that 76% or more of the women in the sample have been on a diet?

College Algebra
A sky diver jumps from a reasonable height above the ground. The air resistance she experiences is proportional to her velocity, and the constant of proportionality is 0.23. It can be shown that the downward velocity of the sky diver at time t is given by v(t) = 180(1 − ...

College Algebra
A radioactive substance decays in such a way that the amount of mass remaining after t days is given by the function m(t) = 9e−0.012t b) How much of the mass remains after 49 days? (Round your answer to one decimal place.)

College Algebra
Use the Laws of Logarithms to expand the expression. loga(x^5/yz^6) and this was my answer and I got it wrong can any one tell me what I did wrong and what they got? 5log(x)-log(y)-6log(z)

College Algebra
A radioactive substance decays in such a way that the amount of mass remaining after t days is given by the function m(t) = 9e−0.012t where m(t) is measured in kilograms. (a) Find the mass at time t = 0.

College Algebra
Use the definition of the logarithmic function to find x. (a) ln x = 6 x = (b) ln e^2 = x x = can someone explain to me how to do this?

College Algebra
Use a calculator to evaluate the function at the indicated values. Round your answers to three decimals. g(x) =(2/3)^x-1 g(1.5)= g(square root of 3)= g(2pie)= g(-4/5)

College Algebra
Use the Laws of Logarithms to combine the expression. 1/5log(x + 3)^5 +1/3 [log x^6 − log(x^2 − x − 12)^3]

College Algebra
Use the Laws of Logarithms to expand the expression. loga(x^5/yz^6) Can anybody help me step by step pleassse?

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