Friday

January 20, 2017
Total # Posts: 982

**math**

the number of blocks has 9 in the ones place. the number in the hundreds place is one more than the number in the tens place. those two numbers equal 11. how many blocks are there?

*January 18, 2017*

**Linear Algebra**

Hello, could anyone help me with this excersise of linear algebra, Please? Well it's about linear transformation defined as T:V--W , the excersices give me a set of linearly independent vectors of V {v1,v2, v3... vk} and then asks : Are {W1, w2, w3, ...wk}, the linear ...

*January 12, 2017*

**Pre-calc Math**

A tree on a hillside casts a shadow c = 210 ft down the hill. If the angle of inclination of the hillside is b = 21° to the horizontal and the angle of elevation of the sun is a = 51°, find the height of the tree. (Round your answer to the nearest foot.) ________ft

*December 23, 2016*

**Pre-calc Math**

The path of a satellite orbiting the earth causes the satellite to pass directly over two tracking stations A and B, which are 95 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°, ...

*December 23, 2016*

**Pre-calc Math**

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ?B1 is smaller than ?B2.) a = 78, b = 109, ?A = 24° Find : ?B1...

*December 23, 2016*

**Science**

It increases the populations because both species have more food supply which allows them to produce more and eat more. Put this into your own words BTW.

*December 12, 2016*

**Math (related rates) help?**

ohh ok this helped me too

*December 8, 2016*

**Thermo Dynamics**

Would like to see the following problem worked out. Having trouble solving. Explanation would be helpful. Given:Water at 20 Degrees C is filled to the top of a 15 m high, 15 m diameter tank. The tank is connected to a 15 m section of 5 cm diameter pipe which contains a fully ...

*December 7, 2016*

**math**

ben is a book that is 48 pages long.

*December 5, 2016*

**SS PLS HELP**

1. How are capital resources used in production? (1 point) They allow producers better access to world markets. They make it possible to employ more skilled laborers. They provide tools that make production more efficient. They purchase the raw materials needed for production...

*November 18, 2016*

**Math**

equivalent expressions that can be used to find the final price of an item costing g dollars that is on sale for 15% off and charged 7% sales tax.?

*November 15, 2016*

**Social Studies**

1. BCD

*November 15, 2016*

**Social Studies**

My answers are 1.B 2.C 3.D 4.C

*November 15, 2016*

**Social Studies**

1. What are the three types of productive resources? Select all that apply. (3 points) the raw materials provided by the planet the planning and work that go into production the markets that sell the results of production the social systems that ensure production is protected ...

*November 15, 2016*

**SS**

Is it 1. BCD 2. C 3. D 4. C

*November 14, 2016*

**Math**

At the same time a 5 foot person cast a 2 foot shadow, a nearby flagpole cast a 10 foot shadow. How tall is the flagpole?

*November 10, 2016*

**algebra**

The volume of a gas varies directly with its temperature and inversely with the pressure. If the volume of a certain gas is 20 cubic feet at a temperature of 350K and a pressure of 35 pounds per square inch, what is the volume of the same gas at 330 K when the pressure is 30 ...

*November 5, 2016*

**algebra**

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 10 inches, how much force is necessary to stretch the same spring 9 inches?

*November 5, 2016*

**Math**

A fence around a square garden is madr up 4 equal-sized pieces that are each 5 1/2 feet long. Matt decided to make the sides 2 1/2 times longer. How much fencing does he need in all?

*November 4, 2016*

**Math**

Pedro spent 2 1/5 hours on his math himework and half as lomg on his science homework one weekend. If his english and social studies homework took 7/8 as long, how much time did he spent on homework that weekend?

*November 4, 2016*

**mathematics**

solve m2+6m+7 using completing the square method

*November 4, 2016*

**Math**

A rocket is launched at t=0 seconds. It's height, in feet, above sea-level, as a function of time, t, is given by h(t)=-16t2+64t+192 When does the rocket hit the ground after it is launched?

*October 30, 2016*

**Math**

A rocket is launched at t=0 seconds. Its height, in feet, above sea-level, as a function of time,t, is given by h(t)=-16t^2+112t+480 When does the rocket hit the ground after it is launched?

*October 27, 2016*

**algebra**

For the following relation, give the domain and range, and indicate whether it is a function. {(1,2),(6,3),(3,1),(8,7)}

*October 1, 2016*

**algebra**

For the following relation, give the domain and range, and indicate whether it is a function. {(1,2),(6,3),(3,1),(8,7)}

*October 1, 2016*

**Math**

Hello everyone! I'm a 10th grader and I scored a 3331 on my math scantron performance series test.... is this good, average or bad? Thanks! -a

*September 15, 2016*

**math**

in a survey, 1000 people were asked what sports they liked best. of that number, 423 said baseball and 95 said tennis. what part of total number surveyed liked baseball? what part liked tennis?

*September 7, 2016*

**Algebra**

Root of 3x-6 = -4 3x-6 is all under a square root

*August 22, 2016*

**math**

use the terms factors,divisor,multiple, product and divisible by to write as many statements as you can about the number sentence. 7×9=63

*August 17, 2016*

**mathematics**

a public ferry travelled 220 km along with current of the wind it's travelled 63 km against the current 24 km/hr at the same time. find the current of the wind?

*August 8, 2016*

**Algebra**

You and 4 friends go out to eat you all split the bill equally each person's share was 6.50 how much was the original bill

*August 2, 2016*

**Chem**

A sealed balloon is filled with 1.00 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 299 torr and the temperature is -31°C. What is the change in the volume of the balloon as it ascends from 1.00 atm to a pressure ...

*July 18, 2016*

**Chemistry**

A student dilutes a solution so that its pH changes from 2.4 to 4.4. 10mL of the original solution was diluted by how many mL?

*July 11, 2016*

**Income tax**

Catherine purchased furniture and fixtures (7-year property) for her shop for $80,000 in May 2013. What AMT depreciation adjustment is required in 2013? A. $0 B. $2,864 C. $8,568 D. $11,432 The answer is A?

*June 30, 2016*

**i-ready mastery check**

Sally has 3 white tennis balls and 4 orange tennis balls. Drag a ratio into each box to represent the relationship between the two quantities. Answer choices may be used more than once. Not all answer choices will be used.

*May 31, 2016*

**Math**

What are the numbers to the median of 38 and mode of 40 minimum of 9 and maximum of 85?

*May 12, 2016*

**Geometry**

A hill slopes down from a building with a grade of one for to five feet measured along the horizontal (slope of 1/5). If a ladder 36 ft. long is set against the building, with its foot 12ft. down the hill. How high will it reach the building?

*April 30, 2016*

**math**

(3 + 4) + 102 × (7 − 6) = how do i do this with the ()?

*April 21, 2016*

**math**

if they have () you do those first right like this problem (3 + 4) + 102 × (7 − 6 you would do 3 + 4 and then 102 or?

*April 21, 2016*

**math**

ok thank you guys this site is good

*April 21, 2016*

**math**

3 + 4 + 102 × 7 − 6 = how would i do this?

*April 21, 2016*

**Geometry**

Please help me with this: Using the definition, describe in words the translation of a triangle y f(x,y)=x-5,y+4)

*April 15, 2016*

**4th grade math**

Ellie and Heather drew floor models of their living rooms. Ellie's model represented 20 feet by 15 feet. Heather's model represented 18 feet by 18 feet. Whose floor model represents the greater area? How much greater?

*April 11, 2016*

**Geometry**

I meant to put S instead of A and I'm trying to find the perimeter of the parallelogram

*April 10, 2016*

**Geometry**

given the parallelogram of the perimeter RATU with vertices R(1,3) S(-2,-2) T(4,0) U(7,4):round to the nearest hundredth Rec1: Rec2: triangle 1: triangle 2: triangle 3: triangle 4:

*April 10, 2016*

**4th grade math**

long jump measurements. Allison jumped 3/8 foot shorter than the farthest jump. How far, in feet, did Allison jump? how to calculate long jump measurements

*March 28, 2016*

**Chemistry**

How many ions does 3 moles of zinc hydroxide have? I believe 1 mole of zinc hydroxide contains 3 ions so do I just multiply it by 3?

*March 17, 2016*

**4th grade math**

The school carnival is divided into sections. The dunk tanks are in 1/10 of the carnival. Games are in 4/10 of the carnival. Student exhibits are in 5/10 of the carnival. what fraction is dunk tanks and games

*March 4, 2016*

**4th grade math**

A shirt costs $15. A pair of sneakers costs four times as much. How much does the pair of sneakers cost? A hat is as much as the sneakers, so how much does the hat cost? If Ken buys one hat, one pair of sneakers, and two shirts, how much has he spent?

*March 3, 2016*

**microeconomics**

If a firm holds a pure monopoly in the market and is able to sell 5 units of output at $4.00 per unit and 6 units of output at $3,90 per unit, it will produce and sell the sixth unit if its marginal cost is 4.00 or less 3.40 or less 3.90 or less

*February 27, 2016*

**Physics**

I am asking and I know I can't but I don't no the answer to the question. So please answer.

*February 9, 2016*

**Physics**

A uniformed lath AB of length 80 cm and mass of 50g is pivoted at a point p,25 cm from one end it is kept horizontal by support at the other end by a vertical string. Calculate the tension in the string.

*February 9, 2016*

**Math**

A flower is 9 3/4 inches tall. In one week, it grew 1 1/8 inches. How tall its the flower at the end of the week? Write in simplest form.

*February 8, 2016*

**US History**

What role did the media play in the development of popular thinking related to the Spanish-American War? What is the correct role of news media in war time?

*February 5, 2016*

**math**

You and your sister work on the weekends at your parents’ store. You receive $4 per hour and your sister gets $5 per hour. On Saturday both of you worked a total of 7 h and together made $32. How much money did each of you earn on Saturday?

*January 27, 2016*

**Grde 12 math**

Angle D is 110 degree.Angle A and B has (5y+10).What is the value for y and the measures of angle C and angle A?

*January 24, 2016*

**chemistry**

If I wanted to make two solutions. In one I will mix Chemical A into 1 Liter of water. In the second I will mix Chemical B into 1 Liter of water. If I want my two solutions to be the same concentration they should contain the same number of PARTICLES. How can I make sure both ...

*January 11, 2016*

**messa secondary school**

If the last term of A.P is 40, what is the number of term.

*December 22, 2015*

**Algebra**

What are integer values for c in the following: 2 x^2 + 5 x + c = 0 What's the logic/method to get c with using a calculator, Excel,... I don't see how to uss outer/inner combo or AC grouping.

*December 15, 2015*

**Geometry**

Write a two-column proof. If point g is the centriod of triangle ABC and BG = 18. Find GE and BE. My work: ge is half so its 9. be equals 18 + 9 = 27 i need help on two column proof part

*November 27, 2015*

**math**

Help

*November 24, 2015*

**chem**

i have several problems i am caught on for my homework. I appreciate any help 1. As milk spoils, rancid components begin to coagulate. This could be interpreted as a: a.a colloid forming a suspension. b.solution forming a colloid. c.solution forming a suspension. d.suspension ...

*November 17, 2015*

**Math**

I don't get it!?

*November 12, 2015*

**Victoria Park**

Algebra: Measurement One of the equal sides of an isosceles triangle is 3 m less than twice its base. The perimeter is 44 m. Find the lengths of the sides.

*November 4, 2015*

**TAX**

Patty and Rich, married filing jointly, have $385,000 in MAGI and $90,000 of net investment income(NII). they will pay a sutax of: A. $0 B. $1,710 C. $3,420 D. $5,130

*October 23, 2015*

**math**

A home owner goes to the hardware store to purchase the letters that make up a number for a sign he is making, (e.g., F-O-U-R, N-I-N-E, etc.). When he arrives, other customers are doing the same thing. The first customer buys the letters to display ONE, and pays $40. The next ...

*October 6, 2015*

**Math**

One table at a bake sale has 75 cookies. Another table has 60 cupcakes. Which table allows for more rectangular arrangements when all the cookies and cupcakes are displayed? Explain

*September 29, 2015*

**fluid mechanics**

a block has a mass of 400kg in air when submerged in seawater it weighs 2943N. what is the specific gravity of the block?

*September 29, 2015*

**English**

Which value is reflected in Heracles ? .

*August 28, 2015*

**algebra**

wright the slope-intercept form of the equation of the line though the given points through:(4,4)and (3,5)

*August 19, 2015*

**math**

what is the word form for34,235,345

*August 14, 2015*

**Accounting**

In the context of determining fair value, the exit price refers to: A. The amount the firm would receive if it sold a given asset. B. Amount the firm would pay if it bought an asset of the same type and condition as the one being valued. C. Sum of the future cash flows ...

*August 12, 2015*

**algebra 1**

someone please help me. The function f(x) is shown below: f(x) = (5)x - 1 The function f(x) is shifted to the right by 13 units. Which of the following best represents the new function? f(x) = (5)x + 13 f(x) = (5)x + 12 f(x) = (5)x - 14 f(x) = (5)x - 13

*August 12, 2015*

**Accounting**

Thanks

*August 11, 2015*

**Accounting**

Revenue is earned when: A. Contract is signed by both parties B. The seller substantially completes performance required by an agreement C. Buyer completes payment required under an agreement D. The buyer accepts delivery and completes required payments. Answer: D

*August 11, 2015*

**MATHS**

the following is an AP 9,X,Y,Z,25 1.find the values of x,y,z.

*August 5, 2015*

**algebra 1**

Gordon is evaluating some stocks he wants to purchase. You can see the function of the stock price below. The variable x represents days. Stock A B C Price f(x) = 25(1.08)x x f(x) 0 22.00 1 21.56 2 21.13 The initial price of this stock is $30, but it has been increasing 4% ...

*August 4, 2015*

**Probability**

wow.wel cases like these we are going to use a permutation formula which is:nPr=n!/(n-r)! nw 26P5=26/(26-5)! were n=26 and r=5 xo nw we ave 26P5=26!/21! 26*25*24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1/21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1=...

*July 30, 2015*

**maths**

A hallow sphere has a volume of xcm^3 and a surface area of ycm^2 if the value of the diameter of the sphere is the radius of the area of a semicircle.what is the radius of a cylinder(P) if the area of the circle is equal to the area of the cylinder when the hight of the ...

*July 30, 2015*

**maths**

A hallow sphere has a volume of kcm^3 and a surface area of kcm^2.what is the value of the diameter of the sphere if it is tripled

*July 30, 2015*

**maths**

(1)differentiates,x^x^10 Question(2),compute each of the following double integral over the rectangles where R=(-2,-1)*(0,1),§x^2y^2+cos(paix)+sin(paiy)dA qustion3:investigate the stationary point of f(x) if y=3x^2+y^3-3x^2-3y^2-2

*July 30, 2015*

**maths**

plz i cerious need help i posted dis qustion bt due 2 my wrong typing it was nt anser plz here it is:x^4+3x-2/(x^2+1)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH? plz it a partial fraction thank yo u and Godbless u

*July 29, 2015*

**maths**

npr=3024 find r (2)dy/dx=secx-tanx/secx+tanx. plz help

*July 28, 2015*

**physics**

A particles of mass 10-2kg is fixed at the tip of a fan blade which rotates at an angular velocity of 100rad-1.if the radius of the blade is 0.2m,then what is the centripetal force?

*July 28, 2015*

**physics**

A stone is thrown horizontally outward from the top of a bridge, the stone is released 19.6meter above the street below.the initial velocity of the stone is 5.0m/s.determine the (a)total time that the stone is in the air (b)magnitude and direction of the velocity"...

*July 28, 2015*

**Maths**

x^4+3x-2/(x^2+1)^3(x-4)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH?xo sori 4 al my numerous erros am jus despirate thankyou Godbless you

*July 28, 2015*

**maths**

A spherical tank of diameter 3m is filled with water from a pipe of radius 30cm at 0.2m/s.calculate an corect to 3s.f the time in minute it take to fill the tank.thankyou godbless

*July 28, 2015*

**maths**

here is another.A spherical tank of diameter 3m is filled wit water from a pipe of radius 30cm to 0.2m/s.calculate an corcet to 3s.f the time in minute it wil take to feel the tank take to be TT=22/7 thankyou

*July 28, 2015*

**maths**

x^4+3x-2/(x^2+1)^3(x-4)=(Ax+B)/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+H/(x-4)+G/(x-4)^2.find ABCDEFGH?plz solve it a partial fraction i serious need the solution urgently

*July 28, 2015*

**mathematics**

x^4+3x-4/(x^2+1)^3(x-4)=Ax+B/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+H/(x-4)^2.? find ABCDEFGH plz it a partial fraction i need the solution urgently

*July 28, 2015*

**government secondary school abuja**

solve the partial fraction.x^4+3x-2/(x^2+1)^3(x-4)=(Ax+B)/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+H/(x-4)^2.Find the value of ABCDEFGH, plz help

*July 28, 2015*

**Math (PLEASE HELP!)**

1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= -2x+b be tangent to the parabola y=3x^2+4x-1?

*June 18, 2015*

**Microeconomics**

Thanks

*May 27, 2015*

**Microeconomics**

Medical doctors earn higher incomes than people who have a Ph.D. in economics. This is partly because A. Medical doctors are more likely to face malpractice lawsuits. B. The costs of receiving necessary medical education are higher. C. A relatively small number of students are...

*May 27, 2015*

**Management**

just check for accuracy please? 3. Which one of the following situations is an example of overall cost leadership? A. A dress manufacturer wants to make its product unique in its category. B. A company that manufactures school desks is looking for ways to make its desks less ...

*May 23, 2015*

**Economics**

Suppose that Erin spends all of her income on two goods: pizza and fiction novels. If the price of pizza rises, then A. The current marginal utility per dollar spent on pizza will rise B. The current marginal utility per dollar spent on pizza will fall C. The current marginal ...

*May 16, 2015*

**Microeconomics**

If a competitive market operates perfectly, it relies on A. The number of people buying goods B. The laws of supply and demand C. How many products can be produced for sale d. how much people are willing to pay for the products. The answer is B?

*May 13, 2015*

**history**

Which of the following was the primary cause of the Balkans wars conducted during the Clinton administration I picked the break up of the former state of Yugoslavia

*May 13, 2015*

**Microeconomics**

If the price elasticity of demand is 2, this means that a _____________ increase in price causes a ____________ decrease in quantity demanded. A. 15%; 100% B. 15%; 10% C. 20%; 40% D. 30%; 20%

*May 8, 2015*