Saturday

December 10, 2016
Total # Posts: 103,287

**elemination**

x=2y-7 8x+5y=7

*December 6, 2016*

**Science. Answer Check**

They both look right

*December 6, 2016*

**math**

the nth team of a progression is 3n+4.is the pattern of number, so formed ,in A.P.?if so, find its 6th term

*December 6, 2016*

**math**

The Curved surface area of the cylinder is 1760cm^2 .and its volume is 12320 cm^3. Find its height

*December 6, 2016*

**Maths**

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

*December 6, 2016*

**physics**

An electron beam is accelerated through 50kv potential difference and then passes through magnetic field produced by coils for 1cm the screen is located 10 cm from end is 50 cm wide.when the field is turned off the beam stikes the centre of screen.what field strength is ...

*December 6, 2016*

**LIT**

two numbers sum to 37 twice the first subtracted from the second is 4 find the numbers

*December 6, 2016*

**Algebra **

Find an equation of a parabola with a vertex at the origin and directrix y =–4

*December 5, 2016*

**chemistry chem check **

Two liquids, 'R' and 'S' form an ideal mixture, what is true about the relation between the mole fraction of R in the liquid phase (X_r) and that of the vapor phase (Y_r) for most mole fractions in the range of 0<X_r<1. A)X_r < Y_r B) X_r > Y_r C)...

*December 5, 2016*

**math**

Ali, Clara, and Shan raised money for new books for the school library. Ali raised 20% more than Clara and $58 more than Shan. Clara raised 1/4 more than Shan. A) How much money did they raise altogether B) What percent of the total money did Clara raise? Thank you, btw five ...

*December 5, 2016*

**PLEASE HELP SOCIAL STUDIES CONNECTIONS ACDEMY 6th**

Damon do you do connections?

*December 5, 2016*

**PLEASE HELP SOCIAL STUDIES CONNECTIONS ACDEMY 6th**

No one asked for extra

*December 5, 2016*

**PLEASE HELP SOCIAL STUDIES CONNECTIONS ACDEMY 6th**

IDk

*December 5, 2016*

**PLEASE HELP SOCIAL STUDIES CONNECTIONS ACDEMY 6th**

Thanks! So Ethiopia is the answer??

*December 5, 2016*

**PLEASE HELP SOCIAL STUDIES CONNECTIONS ACDEMY 6th **

what lands beside egypt does the nile flood

*December 5, 2016*

**math**

On a farm ,the ratio of cows to chickens to horses is 2 to 7 to 3. There are 8 fewer horses than chickens on the farm.How many total animals are on the farm?

*December 5, 2016*

**Algebra **

Find an equation of a parabola with a vertex at the origin and directrix y= -4

*December 5, 2016*

**Algebra **

The reflecting dish of a parabolic microphone has a cross-section in the shape of a parabola. The microphone itself is placed on the focus of the parabola. If the parabola is 60 inches wide and 30 inches deep, how far from the vertex should the microphone be placed?

*December 5, 2016*

**Social studies please help**

What were the answers?

*December 5, 2016*

**URGENT 4TH GRADE MATH**

733.1

*December 5, 2016*

**african american history**

what ways did slave master's exercise "total power" over their slaves?

*December 5, 2016*

**african american history**

name some differences between the historic condition of slaves and that of wives, children and professional athletes

*December 5, 2016*

**MATH URGENT!!!!!**

The graph represents function 1 and the equation represents function 2: A graph with numbers 0 to 4 on the x-axis and y-axis at increments of 1. A horizontal straight line is drawn joining the ordered pairs 0, 3 and 4, 3. Function 2 y = 2x + 1 How much more is the rate of ...

*December 5, 2016*

**precalculs**

Explain what each of the following represents, and how equations (a) and (b) are equivalent. (a) y = a(x - h)2 + k, a ? 0 (b) (x - h)2 = 4p(y - k), p ? 0 (c) (y - k)2 = 4p(x - h), p ? 0 can you check my work and explain how equations (a) and (b) are equivalent. (b)This ...

*December 5, 2016*

**American Government**

Did you get the answers i want to check mine? I need to pass this class.

*December 5, 2016*

**American Government**

Did you get the answers? I wanna check mine.

*December 5, 2016*

**American Government**

Oh cool

*December 5, 2016*

**American Government**

Answering the question

*December 5, 2016*

**precallcuslus **

can you check my work and explain the last question because I do not uderstand. Explain what each of the following represents, and how y = a(x - h)2 + k, a ? 0 and (x - h)2 = 4p(y - k), p ? 0 are equivalent. The equation (x - h)2 = 4p(y - k), p ? 0 is used when the parabola ...

*December 5, 2016*

**africa**

explain the american paradox of freedom and slavery

*December 5, 2016*

**chemistry **

What is the seperation energy ineV for Be3+ in the first excited state in eV?

*December 5, 2016*

**precalculus**

Find the equation of a Parabola with Vertex: (-2,4) and directrix: y=7

*December 5, 2016*

**pre calculus**

Find the equation of a Parabola with Vertex: (2,-1) and directrix: x= -2

*December 5, 2016*

**Maths**

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

*December 5, 2016*

**Maths**

The 5th term of an arithmetic progression is 3times of 2nd term and 12th term exceeds 2times of 6th term by 1. Find the 16th term

*December 5, 2016*

**Math**

The ratio of the number of goats in farm x to the number of goats in farm y was 9:4. After 35 goats were transferred from farm x to farm y,there was an equal number of goats in each farm. how many goats were there in each farm at first?

*December 5, 2016*

**Math**

Given:AD=20 AC=15 Prove:CD=5

*December 5, 2016*

**Math**

TanA VYAPAK SLOVED

*December 5, 2016*

**Math**

1+1=?

*December 5, 2016*

**Math - Coordinate Geometry**

Parallel to 4x-y+1=0, sorry.

*December 5, 2016*

**Math - Coordinate Geometry**

Find the equation of the line which cuts the y-axis at -3 and is parallel to 4x-y+=0. Please show working out, thanks.

*December 5, 2016*

**Linear Algebra**

3

*December 4, 2016*

**Physics **

Kate (m = 50 kg) is swinging on a tire tied by a (light) rope (L = 3 m) to a tree limb. Her twin Ashley comes along and squeezes into the tire with her. Assume that at all times the centre of mass of the person(s) riding the tire is at the end of the rope. a) What was the ...

*December 4, 2016*

**Physics **

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please. What equation should I ...

*December 4, 2016*

**Physics **

A 0.5 kg air-track car is attached to the end of a horizontal spring of constant k = 20 N/m. The car is displaced 15 cm from its equilibrium point and released. a) What is the car's maximum speed? b) What is the car's maximum acceleration? c) What is the frequency f of...

*December 4, 2016*

**Physics**

MOONMAN MOONMAN CANT YOU SEE THIS WEBSItE IS A JOKE

*December 4, 2016*

**Math**

Input 48,24,12,6 Output24,12,6,3 Rule?

*December 4, 2016*

**Algebra**

Whats the domain and range?

*December 4, 2016*

**Algebra **

Identify the type of conic section that has the equation 9x^2 + 25y^2 =225 and identify its domain and range.

*December 4, 2016*

**math**

Theresa has a chose of which pack of pencils to buy. At the store 20 pencils cost $4.00, or 12 pencils for $2,70. A) which is the better buy based on its cost per pencil? B) what is the difference of the cost per pencil between each pack?

*December 4, 2016*

**Physics!!!!!!**

That Answer is wrong

*December 4, 2016*

**Physics!!!!!!**

In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 5.0 m away. After a running start, he leaps at an angle of 10? with respect to the flat roof while traveling at a speed of 5.6 m/s. The acceleration of gravity is 9.81 ...

*December 4, 2016*

**Chemistry**

Molarity x Volume in Liters = moles mass(grams) = moles x formula weight

*December 4, 2016*

**science**

what city goes below sea level first miami or new orleans?

*December 4, 2016*

**English**

it shoes us that meth is bad

*December 4, 2016*

**math**

On May 23, Samantha Best borrowed $4,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method.What was the maturity value of the loan?

*December 4, 2016*

**Physics**

A 52.4 kg pole vaulter running at 10.8 m/s vaults over the bar. The acceleration of gravity is 9.81 m/s2 . If the vaulter’s horizontal component of ve- locity over the bar is 0.60 m/s and air resis- tance is disregarded, how high is the jump? Answer in units of m.

*December 4, 2016*

**pre calculus**

use matrices to solve the system of equations , if possible 2x+3y+z=10 2x-3y-3z=22 4x-2y+3z=-2

*December 4, 2016*

**Maths**

Mari is 3 times older then nandhini after ten years the sum of thare ages will be 80 find the present age???

*December 4, 2016*

**Math**

6 years of the same morning?

*December 4, 2016*

**Physics**

In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 5.0 m away. After a running start, he leaps at an angle of 10? with respect to the flat roof while traveling at a speed of 5.6 m/s. The acceleration of gravity is 9.81 ...

*December 4, 2016*

**Physics**

A daredevil is shot out of a cannon at 44.9? to the horizontal with an initial speed of 27.5 m/s. A net is positioned at a horizontal dis- tance of 41.2 m from the cannon from which the daredevil is shot. The acceleration of gravity is 9.81 m/s2 . At what height above the ...

*December 4, 2016*

**pre calculus**

use matrices to solve the system of equations , if possible. 2x+y+2z=4 2x+2y=5 2x-y+6z=2

*December 4, 2016*

**Maths**

The length and breadth of a rectangular hall are 24m and 18m.what is the largest straight line that can be drawn in the floor of the hall.

*December 4, 2016*

**Propotion**

A taxi cover a distance at the speed of 60 km/hr. How much time it will take to cover the same distance at the speed of 80 km/hr?

*December 4, 2016*

**Physics**

A baseball is thrown at an angle of 20? relative to the ground at a speed of 25.8 m/s. The ball is caught 43.6152 m from the thrower. The acceleration due to gravity is 9.81 m/s2 .

*December 3, 2016*

**chemistry**

Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3 NO2(g) + H2O(?) ?? 2 HNO3(?) + NO(g) If 900 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same conditions. Answer in L.

*December 3, 2016*

**precalculus **

can you please check my work? 7. Find the equation of the parabola y=ax2+bx+c that passes through the points(0,6),(-2,2), and(3,9/2). y=ax2+bx+c 6=a(0)2+b(0)+c 2=a(-2)2+b(-2)+c 9/2=a(3)2+b(3)+c 6=c 2=4a+(-2b)+6 9/2=9a+3b+6 -4=4a-2b -3/2=9a+3b a=-1/2, b=1 y=(-1/2x)-x+6

*December 3, 2016*

**tss**

Find the dimeter of circle if radious is 5

*December 3, 2016*

**Tax Course**

Can you help me with these questions? Can you double check my answers? 1. Which of the following deductions may not be claimed on Form 1040A? Educator expenses. Moving expenses.* Student loan interest deduction. Tuition and fees deduction. 2. Dorothy Fonda is an unmarried head...

*December 3, 2016*

**University **

17. neutralizing 20 ml 5.66% potassium hydroxide solution density of 1.053 g / cm3 matter 12.1 ml sulfuric acid density of 1.052 g / cm3. Determine the concentration (%) sulfuric acid solution.

*December 2, 2016*

**Physics **

A 0.5 kg air-track car is attached to the end of a horizontal spring of constant k = 20 N/m. The car is displaced 15 cm from its equilibrium point and released. a) What is the car's maximum speed? b) What is the car's maximum acceleration? c) What is the frequency f of...

*December 2, 2016*

**Physics **

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please! Do it step by step and ...

*December 2, 2016*

**Physics **

Kate (m = 50 kg) is swinging on a tire tied by a (light) rope (L = 3 m) to a tree limb. Her twin Ashley comes along and squeezes into the tire with her. Assume that at all times the centre of mass of the person(s) riding the tire is at the end of the rope. a) What was the ...

*December 2, 2016*

**Math**

Here's a pattern: 2, 4, 8, 16, 32. What's the nth term?

*December 2, 2016*

**Math**

Here is a number pattern: 1/2, 1/4, 1/6, 1/8, 1/10. Write an expression for the nth term

*December 2, 2016*

**FINANICIAL**

How much should be invested now at 7.55% compounded annually to have $46,000 in 12 years?

*December 2, 2016*

**Calculus**

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=6x^2, x=1, y=0, about the x-axis

*December 2, 2016*

**Calculus**

The region in the first quadrant bounded by y=6x^2 , 2x+y=8, and the y-axis is rotated about the line x=-1. The volume of the resulting solid is:

*December 2, 2016*

**Calculus - Integrals**

The region bounded by y=x^2, x=y^2 is rotated about the line y=-3. The volume of the resulting solid is:

*December 2, 2016*

**Calculus**

Find the volume of the solid obtained by rotating the region enclosed by the graphs of y=18-x, y=3x-6 and x=0 about the y-axis V=

*December 2, 2016*

**Calculus**

The region R is in the first quadrant and bounded by the x-axis, the y axis, and y= 3+2x-x^2. Find the volume of the solid that results when R is revolving about y+1= 0

*December 2, 2016*

** Finite Math**

Wendy wants $15,000 saved in 6 years to make a down payment on a house. How much money should she invest now at 4.65% compounded annually in order to meet her goal?

*December 2, 2016*

**Calculus**

The semicircular region bounded by the curve x=sqrt{9-y^2} and the y-axis is revolved about the line x=-3. The integral that represents its volume is V= âˆ« [a^b] f(y) dy What is f(y)? I've gotten f(y) to: (1+(sqrt(9-y^2)))^2-9 But it's not being ...

*December 2, 2016*

**Calculus - Integrals**

Find the volume of the solid of revolution obtained by revolving region bounded by the parabolas 2y=x^2 and y^2=4x about the x-axis

*December 2, 2016*

**American Government HELP**

Recall the scenario for this lesson’s discussion: You are the CEO of a powerful and politically connected corporation in your area. You have lunch once a month at your club with other business leaders of influential conglomerates to see where your interests might ...

*December 2, 2016*

**Health**

Noo it's d I took the quiz just now it is the last one

*December 2, 2016*

**Health**

Noo it's d I took the quiz just now

*December 2, 2016*

**Health**

Is it really a

*December 2, 2016*

**Science**

A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...

*December 2, 2016*

**MATH**

Taylor surveys students in one grade level who own at least one pet. She finds that 50% of the students surveyed own 2 pets, 3 students own 3 pets each, and 2 students own 4 pets each. Eight of the students in the grade own 1 pet. Considering the number of pets as the random ...

*December 2, 2016*

**Surface areas and volumes**

The inner diameter of a circular well is 3.5m .It is 10m deep (a) find the inner curved surface area (b)the cost of plastering the curved surface at the rate of 40/-per m^2

*December 2, 2016*

**Math**

Given that 9554÷562 = 17 how can you find the quotient 95,540÷562

*December 1, 2016*

**math**

Rodney has four books.She shares it with her two friends for one book each.They give her 14 books back and she spends it with her other 7 friends. How many books did they each get back?

*December 1, 2016*

**math**

How much of the earthâ€™s surface area would a man see if he were raised to the height of a diameter above it?

*December 1, 2016*

**Physics**

A 1.5 kilowatt electric motor on a water well pumps water from 10 meters below the surface. The density of the water is 1 kilogram per liter. How many liters of water does the motor pump in one hour?

*December 1, 2016*

**Physics**

How long would it take a 1.5 x 10^5 kilogram airplane with engines that produce 100 megawatts of power to reach a speed of 250 m/s at an altitude of 12 kilometers is air resistance were negligible? If it actually takes 900 seconds, what is the power? Given this power what is ...

*December 1, 2016*

**Physics**

One of their side jobs is a safe delivery and installation. A pulley system is used to lift the safe 2 meters above the ground. But the rope snaps! To avoid cracking from any drops, a large, stiff spring is placed below the safe while it's lifted. If the 1200 kilograms ...

*December 1, 2016*

**Physics**

On a hot summer day, you've got nothing better to do than play with ice cubes. You are currently sliding a 75 gram Ice Cube up and down a basically frictionless slope. At the bottom of the slope, which is inclined at 30 degrees relative to the horizontal, Is a spring with ...

*December 1, 2016*

**Physics**

You find yourself driving 35 kilometers an hour when you take your foot off the accelerator and descend 18 meters into the valley. Just as you reach the bottom, you see a policeman hiding between a speed limit sign that reads 70 kilometers per hour. Will he issue you a ...

*December 1, 2016*