Wednesday

January 28, 2015

January 28, 2015

Total # Posts: 1,138

**math **

B . . . . . . . . . . . . . . C A Triangle ABC is right angled at A. The area of triangle is = ½bh. The area of the triangle is 3/2x^2 + 10x + 16cm^2 where x is a positive integer. The area of the triangle ABC can be written in the form 1/2 (x+a)(bx + c) . The value of ...
*January 28, 2015*

**Math **

what factor do 4x^2 +13x+3 and 8x^2+22x-6 have in common? i try and got answer of 12, am i right or wrong?
*January 27, 2015*

**Physics**

In a 100 m linear accelerator, an electron is accelerated to 1.40% of the speed of light in 46.0 m before it coasts for 54.0 m to a target. What's the electron's acceleration during the first 46.0 m? b) How long does the total flight take?
*January 24, 2015*

**English**

Other than examples, a good way to provide detail in your paragraphs would be to ________. A. restate the topic sentence B. restate the thesis C. use transitional words D. use comparisons I think its D?
*January 23, 2015*

**English**

The topic sentence of a body paragraph provides a thesis link by ________. A. revising the thesis to fit the body paragraph B. introducing the thesis of the essay C. mentioning the general subject of the essay D. providing an example that underscores the thesis
*January 23, 2015*

**English**

I think its B?
*January 23, 2015*

**English**

If a thesis statement lists multiple supporting points, topic sentences ________. A. are not used B. follow the same order C. do not offer direction D. only address the first point
*January 23, 2015*

**English**

Im thinking A?
*January 23, 2015*

**English**

Which of the following is a simple sentence? A. The store opened early and closed late to celebrate its annual sale. B. She left home on time, but she still arrived late due to traffic. C. After he compared the prices and features, he purchased the less expensive model. D. ...
*January 23, 2015*

**Math (factors and products)**

what are the factors of p^2 + 11p - 42 ? Thank You.
*January 21, 2015*

**Math (Greatest common factor) **

Please Help! I dont understand the question asking. The greatest common factor of 12m^5n^3 + 18m^3n^3 - 24m^2n^3 is Am^bn^c, where A,B and C are whole numbers?
*January 21, 2015*

**Chemistry **

For a particular reaction, ΔH = -328.21 kJ and ΔS = 98.7 J/K. Calculate ΔG for this reaction at 298 K.
*January 17, 2015*

**Science**

Please help me to solve this equation. Than you for your time and efforts. Here is the question? Jupiter at its closest approach to earth is about 630,000,000 kilometers, the diameter of Jupiter is 140,000 km, calculate the angular diameter of Jupiter in arc seconds. 206,265 ...
*January 17, 2015*

**Chemistry**

In a constant-pressure calorimeter, 50.0 mL of 0.320 M Ba(OH)2 was added to 50.0 mL of 0.640 M HCl. The reaction caused the temperature of the solution to rise from 21.80 °C to 26.16 °C. If the solution has the same density and specific heat as water, what is ΔH ...
*January 10, 2015*

**physics**

When we say that an object wants to maintain its state of motion, we’re talking about inertia. Which term determines the quantity of inertia for an object?
*January 8, 2015*

**health**

Which of the following statements is CORRECT regarding deciding whether an alcohol sale is legal? A. IF a person looks over 21, they likely are. B. Few minors have physical characteristics of an adult. C. if a person looks like a minor, they likely are a minor. D. signs of ...
*December 11, 2014*

**Algebra**

Studying Microgravity. NASA'S Glen Research Center in Cleveland, Ohio, has a 435-foot drop tower that begins on the surface and descends into Earth like a mineshaft. How long will it take a sealed container to fall 435 feet? Round to the nearest tenth of a second.
*December 4, 2014*

**Chemistry**

how many grams of ammonium nitrate would you have to add to 25mL of room temperature water to get 36°F?
*November 30, 2014*

**calculus**

Baseball Star Bryan is standing at the top of the Sears Tower in Chicago and decides to throw a baseball up with a velocity of 5 m/s. The Sears Tower is 442 meters tall and gravity exerts a constant acceleration of -9.8 m/s/s. Ignore ball mass and wind resistance. a.) Find ...
*November 28, 2014*

**Algebra**

Please help me to solve this Radical Expressions and equations word problem. Here is the question: Find the perimeter and the area of the rectangle. Here are the measurements: length is (sqrt 6+2) and the width is (sqrt 6-2)
*November 22, 2014*

**Algebra**

Please help me to solve this Radical Expressions and equations word problem. Here is the question: Surveying. The length of each lot line of a swimming pool complex is shown. Find the exact perimeter of the irregular shaped lot. Then approximate the perimeter to the nearest ...
*November 22, 2014*

**Chemistry**

thank u
*November 22, 2014*

**Physics**

A motor pushes a boat through the water with the force of 2100 N; the water creates a resistance force of 1800 N. What is the acceleration of 1200 kg boat? (Do I use force equals mass times acceleration? 2100=1200a) If it starts from rest how far will it move in 10 seconds? (...
*November 17, 2014*

**Finance **

Are investors and speculator activities necessary to the system of production, or could businesses function just fine without them? Because I feel like sometimes businesses dont really have to resort to having to sell portions of there business to investors and stuff...
*November 13, 2014*

**History**

Yes, in a sense you are correct but lets word it better. It would be more like, The seventh amendment is the section of the Bill of Rights that guarantees that every person no matter their race, or background a jury trial for civil cases in the federal courts.
*November 13, 2014*

**Chemistry**

0.100 moles of NaOH are combined with 0.125 moles acetic acid. The mixture is taken to a final volume of 100.00 ml. What is the expected pH of the solution? Use Ka for acetic acid of 1.76 x 10^-5
*November 13, 2014*

**Algebra**

I am not sure but I will write all of this down. Thank you Steve. Yours, JAY
*November 2, 2014*

**Algebra**

I really need your help in solving this problem. I appreciate your time and efforts. Have a terrific day :) Here is the question: For each expression, perform the indicated operations and simplify, if possible. Solve each equation and check the result. Two part question: A. u^...
*November 2, 2014*

**Algebra**

Outstanding work Steve, thank you so much! Yours, JC
*November 2, 2014*

**Algebra**

I really need your help in solving this problem. I really appreciate your time and efforts. Here is the question: An amount of money invested for 1 year in a savings account will earn $ 1,500. The same amount of money invested in a mini-mall development will earn $6,500 ...
*November 2, 2014*

**physics**

time it take car to accelerate-2.5/1.25=2sec assume car overtakes truck after tsec Dt=1.5t Dc=(1/2*2*2.5)+2.5(t-2)=2.5t-2.5 At time t,Dt=Dc 1.5t=2.5t-2.5 t=2.5secs b)distance they have travelled equals d=1.5*2.5=3.75m
*October 31, 2014*

**Science Physics**

A pile driver falls a distance of 1.75 m before hitting a pile. Find its velocity as it hits the pile. So its 1.75x9.80=17.15?
*October 27, 2014*

**physics intro**

A 0.175-lb ball is thrown upward with an initial velocity of 75.0 ft/s. What is the maximum height reached by the ball? Would I need to set it up like √2*75.0*-32.2/0/175?
*October 27, 2014*

**Math Physics**

Water is pumped at 250m^3/min from a lake into a tank 65.0 m above the lake. (a) What power, in kW, must be delivered by the pump? (b) What horsepower rating does this pump motor have? (c) What is the increase in potential energy of the water each minute?
*October 27, 2014*

**physics**

30000-12000=18000
*October 26, 2014*

**Physics**

(1.1/(.66*1.1))*1.1=1.67
*October 26, 2014*

**chemistry**

A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound?
*October 24, 2014*

**engligh**

Which choice best describes the underlined words in the sentence? Look at the stars and planets on a clear night. (Points : 3) simple predicate complete predicate compound predicate none of the above
*October 23, 2014*

**math**

Tom wants to run 2 1/2 miles on a 2/3mile track how many laps does tom run. I had add 2/3+2/3= 4/3 adding it up to get a 2 1/2 miles but it added. To 2 laps that don't sound right I need help need to have this dome tonight can't figure it out
*October 22, 2014*

**Algebra**

Please help me to solve this problem. Thank you in advance for helping to solve this problem. Have a great day. Here is the question? Find an equation of the line that passes through the two given points. Write the equation in slope-intercept form, if possible. Passes through...
*October 20, 2014*

**Jay**

Thank you
*October 20, 2014*

**Jay**

Thanks is this the answer?
*October 20, 2014*

**Algebra**

Thanks
*October 20, 2014*

**Algebra**

Thanks is the answer?
*October 20, 2014*

**Algebra**

I really need your help in solving this problem. Your time and efforts will be very much appreciated. Here is the question? Graph the solutions of each system: (x <= 0 (y < 0
*October 20, 2014*

**algebra**

ok thanks for the correction, I appreciate that!
*October 20, 2014*

**algebra**

Thank you very much!
*October 20, 2014*

**algebra**

An investor wants to receive $1,000 dollars annually from two investments. He has put $4,500 in money market account 4% annual simple interest. How much should he invest in a stock fund that pays 10% annual simple interest to achieve this goal?
*October 20, 2014*

**Physics**

Mike is piloting a lear jet traveling at 199.0 m/s. He accelerates at 8.5 m/s2 over a distance of 2240 meters. How fast will the jet be moving at the end of this acceleration?
*October 18, 2014*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*October 13, 2014*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*October 13, 2014*

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...
*October 13, 2014*

**Science Physics**

A 250 kg part falls from a plane and hits the ground at 150 km/h. Find its kinetic energy. Would I need to convert 150km/h to m/s? then multiply with the mass?
*October 13, 2014*

**Science Physics**

Did it like this 1.00E6*62.4*736=4.53ftlb
*October 13, 2014*

**Science Physics**

The Hoover Dam is 726 ft high. Find the potential energy of 1.00 million ft3 of water at the top of the dam.(1 ft3 of water weighs 62.4 lb.)
*October 13, 2014*

**Science Physics**

How long would it take a 4.50-kW motor to raise a 175-kg boiler to a platform 15.0 m above the floor? Is this correct? 175*9.80*15.0/4.50
*October 10, 2014*

**Math Physics**

A wattmeter shows that a motor is drawing 2200w. What horsepower is being delivered? Is this correct? 2200/746 = 2.95
*October 10, 2014*

**Physics**

A wattmeter shows that a motor is drawing 2200w. What horsepower is being delivered? Is this correct? 2200/746 = 2.95
*October 10, 2014*

**math/physics**

thank you, similar but Had to divide by the 2nd mass instead of the 1st mass, Only difference
*October 8, 2014*

**math/physics**

A 75.0-kg paint cart with rubber bumpers is rolling 0.965 m/s to the right and strikes a second cart of mass 85.0 kg moving 1.30 m/s to the left. After the collision, the heavier cart is traveling 0.823 m/s to the right. What is the velocity of the lighter cart after the ...
*October 8, 2014*

**math/physics**

Made a mistake, I had to divide by 75.0 so that the 90.0 cancels out. Thank you
*October 8, 2014*

**math/physics**

A 90.0-g disk traveling 3.00 m/s to the right collides with a 75.0-g disk traveling 8.00 m/s to the left. After the collision, the heavier disk is traveling 7.00 m/s to the left. What is the velocity of the lighter disk after the collision? Do I have this setup right? (90.0*3....
*October 8, 2014*

**math**

find the value of one hundred and fifty multplied by itself
*October 8, 2014*

**Math**

A school hall has 30 rows of seats. Each row has 28 seats.How many seats are there. please show work out.
*October 8, 2014*

**math/physics**

(0.600*4.00+1.00*(-5.00)-0.600*(-7.25))/1.00 = 1.75 I put parenthesis just to show the negative numbers, but the whole problem should be put in the parenthesis then divide by 1.00 in a calculator
*October 7, 2014*

**math/physics**

A 0.600-kg ball traveling 4.00 m/s to the right collides with a 1.00-kg ball traveling 5.00 m/s to the left. After the collision, the lighter ball is traveling 7.25 m/s to the left. What is the velocity of the heavier ball after the collision?
*October 7, 2014*

**math**

A band played 3 concerts and earned a total of $321.00. The band earned about the same amount for each concert. Estimate how muchthe band earned each night.
*October 7, 2014*

**Physics**

A 0.600-kg ball traveling 4.00 m/s to the right collides with a 1.00-kg ball traveling 5.00 m/s to the left. After the collision, the lighter ball is traveling 7.25 m/s to the left. What is the velocity of the heavier ball after the collision?
*October 7, 2014*

**Math (money)**

19
*September 28, 2014*

**Match**

justine has 162 red buttons,98 blue buttons,and 284 green buttons. she says she knows she has more than 500 buttons without adding.do you agree? explain.
*September 25, 2014*

**chemistry**

Pure aluminum has density 2.70g/cm^3. If we add a solid aluminum cylinder to a graduated cylinder containing 19.2 of water, and the water level in the cylinder rises to 24.7 ml, what is the mass of the aluminum cylinder?
*September 19, 2014*

**chemistry**

Acetone, a common solvent has a density 0.79g/cm^3 at 20C. What is the volume of 85.1g of acetone at 20C? What is the mass of 125ml of acetone at 20C? Show your calculations.
*September 19, 2014*

**math 6th grade**

Maritza is baking cookies to bring to school that requires 3 eggs and 2 cups of sugar. To have enough for everyone she bought 12 eggs will 6 cups of sugar be enough? I tried multiplying 3 x 4 = 12 so then multiplied 2 x 4 which is 8 so there would not be enough but we are ...
*September 17, 2014*

**4th grade math**

GCM OF 12 and 20. Please explain
*September 17, 2014*

**math**

a living room measure 450 x 330cm. find the dimension of the largest square tile that can be used to tile the floor without cutting
*September 15, 2014*

**maths b**

use the z score table to find the floolwing: a) p(1.2<z<2.4) b) p(z>1.675) please show working out
*September 11, 2014*

**maths a**

us e the formula z=x-u/SD to determine the z score for a score of 34.5 a normal distribution if the mean is 46.5 and the standard deviation is 8.7
*September 11, 2014*

**maths a**

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision. ...
*September 11, 2014*

**BUS**

Please Help! 3. According to the text, today’s public relations firms offer all the following services EXCEPT: executive speech training. research and evaluation. advertising placement. events management. Question 4. 4. All of the following are examples of the public ...
*September 8, 2014*

**Bus**

Please help! Which is not a component of basic public relations practice? counseling employee relations fund-raising networking
*September 8, 2014*

**algebra**

You live under a bridge that goes over a river. the underneath side of the bridge is an arc that can be modeled with the function y=-0.000407x^2+0.658x.Where x and y are in feet. How high is the bridge? How long is the section of bridge above the arc?
*September 5, 2014*

**chemistry**

A sprinter set a high school record in track and field, running 200.0 m in 21.0s . What is the average speed of the sprinter in kilometers per hour?
*September 4, 2014*

**Maths**

A student says that a speed of 50m/s is faster than a speed of 140km/h because the number is bigger.What would you say to them?
*September 3, 2014*

**Math **

•The x-intercepts of the graph of y=f(x) •The real zeros of the function f •The real solutions to the equation f(x)=0 Use the equation f(x)=4x−28 to verify that all three do produce answers that are numerically the same.
*August 28, 2014*

**College Bio **

If two parental organisms of genotype pp and PP were crossed, what percentage of F1 offspring would be homozygous recessive? (Assume simple Mendelian pattern of inheritance and unlinked alleles.)
*July 26, 2014*

**College Algebra**

Give two functions f(x) and g(x) such that (fg)(-1)=4
*July 24, 2014*

**College Algebra**

Thanks
*July 24, 2014*

**College Algebra**

i still don't get it. Thanks
*July 24, 2014*

**College Algebra**

Give two functions f(x) and g(x) such that f(g(2))=7
*July 24, 2014*

**College Algebra**

give a logarithmic function g(x) such that g(49)=2
*July 24, 2014*

**College Algebra**

Give a piece-wise function p(x) where p(2)=5 and p(-1)=3
*July 24, 2014*

**maths**

As compared to its first year of operation, ABC Company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 2-4 was $45,000 over the first year’s sales of $150,000, how much did ABC Company grow in year 2?
*July 22, 2014*

**art history **

A mastaba is:
*July 16, 2014*

**phys**

I got it now. (2c)(450-T) = (c)(T-300) Solve for T
*July 7, 2014*

**phys**

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is: ans is 400 K how?
*July 7, 2014*

**phys**

The coefficient of expansion of a certain steel is 0.000012 per C^(degree) . The coefficient of volume expansion, in (C^(degree))^-1, is: A) (0.000012)^3 B) (4pi/3)(0.000012)^3 C) 3 x 0.000012 D) 0.000012
*July 7, 2014*

**algebra**

Find all zeros of the polynomial P(x)=x^3 - 2 x^2 - 9 x - 30.
*July 6, 2014*

**us hist**

In comprison with John Kennedy, Lyndon Johnson was A. better educated B. more skillful at working the congress C. a better public speaker D. personally more charismatic Ans: D Eisenhower's attempt to develop better soviet-american relations was severely hurt by the A. ...
*July 3, 2014*

**Psychology**

What is Classical Hierarchial Classification?
*June 30, 2014*

**psychology**

Which one of the following statements about intelligence is the most accurate a. Iq is a valid measurement, and environmental factors do not change mental ability b. Intelligence is mostlygenetic has the most variability between groups and is reliable regardless of the ...
*June 21, 2014*

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