Wednesday
March 4, 2015

Posts by jay


Total # Posts: 1,166

math
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
March 4, 2015

math
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
March 4, 2015

math
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
March 3, 2015

maths
A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
March 3, 2015

science
If an object is thrown 60m into the air and it takes the object 6s to get there what's there average speed of the object
February 28, 2015

English
I believe it is B and then C? 1. Examples in writing ________. A. help you concisely tell a reader a story that makes a point B. provide specific illustrations and instances C. help you show your reader what you see, hear, smell, touch or taste D. include sense impressions, ...
February 27, 2015

English
Im going to post a few i want to check over. I think it is B, C, and A 1. In narration, dialogue should ________. A. be used solely to describe conflict B. be used sparingly and at significant moments C. be used in each paragraph D not be used at all 2. Which event would BEST ...
February 27, 2015

English
D? Dialogue
February 27, 2015

English
A successful narrative essay de-emphasizes or omits ________. A. the thesis statement B. unimportant details C. conflict D. dialogue Is it B?
February 27, 2015

maths
If 3•5/9 and 40•1/2 are the 1st and last term of geometric sequence. Determine the value of fifth term if there are seven terms.
February 26, 2015

maths
Three terms of geometric sequence: T1,T2 and T3. If T2=T1+4 and T3=T2+9 determine the values of T1,T2 and T3.
February 26, 2015

maths
1/tan60';sin90',tan60';...form a sequence. Calculate the fourth term.
February 26, 2015

History
Which of the following was not a representation or an example of New Women expressing freedom and independence?
February 22, 2015

Math
"The conjugate of the sum of two complex numbers is equal to the sum of the conjugates of the two complex numbers." This is true right?
February 19, 2015

English
1. To avoid using unnecessary colons, use the colon only after a/an ________. A. coordinating conjunction B. series of items C. main clause D. introduction 2. A(n) ________ introduction establishes your authority on the topic and sets the stage for the discussion contained in ...
February 13, 2015

English
A(n) ________ introduction begins with a point that is more specific than that of your thesis. A. quotation B. contrasting idea C. broad-to-narrow D. narrow-to-broad
February 13, 2015

ENGLISH
I have two questions i need help on. Im pretty bad with colons and semicolons :/ 1. When two main clauses are joined together without the use of a coordinating conjunction, the clauses should be separated by a ____. A. semicolon B. comma C. colon D. subordinate clause Choose ...
February 13, 2015

Physics
A cannon fires projectile (ordinarily called a cannonball) at an angle 85 degrees from the ground. The cannonball has a speed 150 m/s, and it is launched from hill 20 m above the plain where it will land.
February 11, 2015

English
I need some more help with these question. Please. I want to make sure i do well 1. When writing reports and proposals, ________. A. state your reason for writing in the first sentence, as your reader will likely dispose of the document quickly B. research and being well-...
February 6, 2015

English
I need help with these problems 1. Academic writing is defined by conventional forms of writing, such as ________. A. research reports and case studies B. editorials and arguments C. summaries and problems D. prose and poetry 2. Public writing includes ________. A. fliers, ...
February 6, 2015

math
what is the expression for the area of the shaded region in the diagram in factored form? diagram: (shaded) Large circle have diameter of 8x (clear) small circle have diameter of 8y ___ my work: Area of large circle - Area of small circle Pi * 4^2 - pi * 4^2 = pi ( 2x+2y)(2x-...
January 30, 2015

math -factor
factors of 9x^2 - 1/100. = (3x + 1/50)(3x - 1/50) ?
January 30, 2015

English
Thank you Writeacher. Does this sound better? 2.Eggs and bacon make a good protein-based breakfast, so you don’t get hungry. 3. Despite misgivings, Jonah ate the green eggs and ham, for he was a fan of Dr. Seuss. 4. The mighty stallion reared, and bucked, and pitched the ...
January 30, 2015

English
I need to make sure these has the correct punctuation. Ive already done them, i just want to be positive 1.Kenneth scored the winning touchdown, and he was crowned Homecoming King. 2. Eggs and bacon make a good protein-based breakfast so you don’t get hungry. 3. Despite ...
January 30, 2015

math
limit of x approaches -3. (2x^2 + 4x + 1)
January 28, 2015

math
Thank you!
January 28, 2015

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

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