Saturday

August 2, 2014

August 2, 2014

Total # Posts: 3,157

**grade 12 data management**

Q- 2 cards are drawn without replacement from a deck of 52 cards. What is the probability that the both card are aces given that they are the same color? I am having a hard time with this question. If anyone knows this I would appreciate it very much thanks.

**geometry**

A rectangular rug covers the floor in a living room. One of the walls in the same living room is pained blue. Are the rug and the blue wall parallel?

**ALgebra**

multiply 1) (x-3)^3. 2) (2x+y)^3. 3) (3a-2)^3

**history**

Why would some people find it wrong to have a woman president for to represent their country?

**ALgebra**

multiply. (x+2)(x-2)(x^2+4)

**Physics**

A block attached to a spring with unknown spring constant oscillates with a period of 6.0 s. What is the period if the mass is doubled?

**Interest **

Walter's savings account has a balance of $273. After 5 years, what will the amount of interest be at 5% compounded quarterly?

**Math**

THe total ticket sales for the basketball game were $1,625.00. Adult tickets were $7.00, and student tickets were $3.00. Twice as many students bought tickets as adults. How many student and adult tickets were sold?

**biopsychology**

Explain to little brother or sister how neours and synapses work

**11th grade**

What measures does henry say the colonists have already tried in the dealings with england?

**math**

Evaluate (3 + 4) + 1 in the mod 5 system

**Physics**

One gram of water changes from liquid to solid at a constant pressure of 1.00 atm and a constant temperature of 0°C. In the process, the volume changes from 1.00 cm3 to 1.14 cm3

**Physics**

A man of mass 65.2 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 22.7 kg and is 2.4 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the scaffold. what is th...

**Physics**

So i multiply 0.69 by ?? 0.345?

**Physics**

A square, 0.69 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 17.1 N lies in this plane and is applied to the square. What is the magnitude of the maxim...

**Physics**

How about for the left rope? Would it be the same thing? or negative instead?

**Physics**

A man of mass 65.2 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 22.7 kg and is 2.4 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the scaffold. What is th...

**Chemistry**

Calculate Delta G for the spontaneous cell produced from the following: Al^3+ + 3e^- -> Al (s) Mg^2+ + 2e^- -> Mg (s) In order to solve this, you need to determine the half reactions..ie which is reduced and which is oxidized. How do I know which one is being reduced and...

**ALgebra**

simplify (-2x^-4) (8x^-3)

**ALgebra**

simplify (-2x^3)^2 (3x^-2)

**ALgebra**

simplify 4z-[23-5(3z-2)]

**English quick ?**

yes i believe there is

**Trig**

tan^2t/sect=sect-cost cott^2/csct=csct-sint

**Physics**

A space vehicle is traveling at 5260 km/h relative to Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 89 km/h relative to the command module. The mass of the motor is four times the mass of the module. What is the speed (in km/h) of the co...

**history**

what are some of the ways in which modern culture is "fatalistic" (in the ancient Greek sense of the word?

**ALgebra**

f=m(m/g^2) solve for m

**ALgebra**

solve 3x-8>2x-1

**Physics**

A 25 kg child bounces on a pogo stick. The pogo stick has a spring with spring constant 2.0*10^4 N/m. When the child makes a nice big bounce, he finds that at the bottom of the bounce he is accelerating upwards at 9.8 m/s^2. How much is the spring compressed?

**ALgebra word problem**

monthly credit card interest is charged at a rate of 1.5%. after one month, total purchases plus interest equal $46.69. how much were the purchases?

**ALgebra**

yes they were two different problems and yes i know they're stupid questions in my math book.

**ALgebra**

simplify: (2x^2y)(-5x^-5y^6) (5y)^3

**college**

convert 2(NH4)3PO4+3HgSO4=3(NH4)2SO4+Hg3(PO4)2 into complete ionic equation,then net ionic equation

**algebra**

can you tell me the process of how to simply problems like this so i dont have to keep asking? simplify: (2x^2y)(-5x^-5y^6) (5y)^3

**ALgebra**

a swim club requires a $120 membership, plus $4 each swim. How much would a person pay to swim 35 times?

**math**

whats square root of 16

**Physics**

i tried both ways and both are wrong :s

**Physics**

So tan theta = 20.8/3.7?

**Physics**

What do you mean by convert it to your system?

**Physics**

Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration? What is the direction of the acceleration in degrees? (Take east to be 0 degrees and counterclockwise to b...

**Physics**

A 2.03 kg mass is observed to accelerate at 8.82 m/s2 in a direction 28.8° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?

**ALgebra**

the difference of two numbers is 37. the larger is one more than four times the smaller. what are the numbers?

**ALgebra**

the sum of two numbers is 87 & their difference is 35. find the numbers.

**english**

compare and contrasrt natty bumppo in the prarie and john in the Hospital SKetches.

**ALgebra**

the difference between two numbers is 7. the larger number is 9 less than 3 times the smaller. find the numbers

**ALgebra**

the difference between two numbers is 7. there sum is 25. find the numbers

**Physics**

An object's moment of inertia is 1.8 kg\,m^2. Its angular velocity is increasing at the rate of 3.4 rad/s^2. What is the torque on the object?

**ALgebra**

the difference of two numbers is 7. the larger number is 9 less than 3 times the smaller. find the numbers

**ALgebra**

that didnt work

**ALgebra**

the difference of two numbers is 5. three times the smaller number is two more than twice the larger number. find the numbers

**algebra**

6 burgers and 3 hot dogs cost $27. 5 burgers and one hot dog cost $18.75. what is the price of a hot dog? what is the price of a hamburger?

**math**

asking missing rule? jai... in, rule, out thanks

**math**

ok, jai but what is the rule? thanks

**math**

input 6 10 16 output 3 5 8 2nd grade,what is rule? thanks

**what is rule?**

input 6 10 16 output3 5 8

**physic**

Six roller-coaster carts pass over the same semicircular "bump." The mass M of each cart (including passenger) and the normal force n of the track on the cart at the top of each bump are given in the figures. Iam given the force in N of the cart at the peak of the lo...

**Physics**

The space shuttle is in a 200-mile-high orbit. What is the shuttle's orbital period?

**Physics**

The centers of a 13 kg lead ball and a 130 g lead ball are separated by 5.0 cm. What gravitational force does each exert on the other?

**science**

7. Assuming that there are no other nonconservative forces involved, what impulse was given to each car during the collision? (6 points) A. Car 1 (3 points)

**geometry**

ABCD is a quadrilateral with BC perpendicular to AB and DE is perpindicular to AB. If AB is 38 yard and EB equals 18 yards, BC equals 13 yards, and DE equals 15 yards. Find the area of ABCD

**chemistry**

what volume in Liters of 0.15M KCl solution is required to completely react with 0.150 liter of a 0.175M Pb(NO3)2 solution according to the following balanced equation? 2KCl(aq)+ Pb(NO3)2(aq)-PbCl2(s)+ 2KNO3(aq)

**physics**

Two race cars are speeding around the racetrack at different speeds. One goes around the track in 2 minutes; the other goes around the track in 1½ minutes. How often does the faster car pass the slower car? Is there a formula to figure this out?

**algebra**

use substitution x/3-y=3 2x+y=25

**ALgebra**

use substitution 3x-2y=11 x-y/2=4

**Chemistry**

If 4.0 g of hydrogen and 10.0 g of oxygen are mixed according to the equation 2 H2 + 02 = 2 H20, which is the limiting reagent? 1. none, they are evenly mixed 2. oxygen 3. hydrogen 4. water

**agriculture**

how long does it take to farm an acre if your implement is 42.5 feet wide and you are going 6 mile an hour

**calculus**

use implcit differenciation to find an eqaution of both the tangent line to the ellipse: 2x^2 + 4y^2 = 36 that passes through the points: 14,3

**Physics**

How much work must you do to push a 10 kg block of steel across a steel table friction is 0.6 at a steady speed of 1.3 m/s for 9.8 s?

**Physics**

A 2.9 kg block slides along a frictionless surface at 1.3 m/s. A second block, sliding at a faster 5.0 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.7 m/s. What was the mass of the second block?

**statistics**

Probability = N!/(r![N-r]!) * p^r * q^(n-r) Probability = 200!/(40![200-40]!) * (1/6)^40 * (5/6)^(200-40) Probability = 0.032865

**calculus**

First step, find any vertical asymptotes. 1 + e^(1/x) = 0 e^(1/x) = -1 1/x = ln(-1) Obviously since this is impossible, there are no vertical asymptotes. Since we have a fraction in the function (1/x), and the x is in the denominator, we can conclude that f(x) does not exist a...

**teacher aide curriculum content**

i need help with all the answers on the teacher aide exam 02603800

**teacher aide curriculum content**

what is a good way to motivate elementary students to learn math

**teacher aide**

when are children first developmentally ready to begin learning science

**physics**

In Rutherford's famous scattering experiments that led to the planetary model of the atom, alpha particles (having charges of +2e and masses of 6.64 10-27 kg) were fired toward a gold nucleus with charge +79e. An alpha particle, initially very far from the gold nucleus, is...

**algebra**

15s-14s=18+63 s(15-14)=81 s=81/(15-14) s=81

**3rd grade**

You need to use the strategy of working backwards day 5= 125 hot dogs day 4= 125-7=??? day 3= ???-7 etc. day 2= day 1=

**math**

estimate 15/21 to 15/20 which reduces to 3/4 of a whole. Now look at your second fraction, it is an improper fraction and reduces to 1 2/17. Since it is over one whole, and the other fraction is part of a whole, it is larger.

**algebra**

solving equations -x^2, if x=-1, etc

**Physics**

A 1200 kg sports car accelerates from 0m/s to 27m/s in 10s. What is the average power of the engine?

**math**

can you show me the steps to the problem> x+x+52+2(x-4) = 71+1

**History**

what were the causes and effects during DeValera’s era in ireland that created the belief that evil in literature and journalism came from abroad and that censorship was necessary to preserve Irish identity?

**Chemistry**

What mass of MgSO4 · 7H2O is required to prepare 800 mL of a 0.442MMgSO4 solution? Answer in units of g. Would you use the formula M1V1=M2V2?

**Chemistry PLEASE HELP!**

When 0.042 moles of aluminum sulfate are dissolved in enough water to make 763 milliliters of solution, what is the molarity of sulfate ions? Answer in units of M.

**chemistry**

Protons= atomic # Electrons= the atomic # +/- charge (if its a positive charge u minus if its a negative charge u plus)

**Chemistry**

What mass of MgSO4 · 7H2O is required to prepare 800 mL of a 0.442MMgSO4 solution? Answer in units of g.

**Chemistry**

When 0.016 moles of lead(II) nitrate are dissolved in enough water to make 748 mililiters of solution, what is the molar concentration of nitrate ions? Answer in units of M.

**Chemistry**

Calculate the molality of CsCl in a 18% by mass aqueous solution. Answer in units of m.

**Chemistry**

How many grams of sucrose (C12H22O11) must be dissolved in 200 g water to make a solution in which the mole fraction of sucrose is 0.2? Answer in units of g.

**PHYSICS ---HELP!**

To store the energy produced in 1.5 hour by a 160 MW (160 10^6 W) electric-power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Assume the upper reservoir is 500 m above the lower and we can neglect the small change in depth...

**physics**

A 64 kg hiker climbs to the top of a 3700 m-high mountain. The climb is made in 5.5 h starting at an elevation of 2900 m. Calculate the average power output in watts. Calculate the average power output in horsepower & Calculate assuming the body is 14% efficient, what rate of ...

**FRL**

Ive gotten the answers for Q1 and Q2 but still struggling with the last two.

**FRL**

The Torrey Pine Corporation's purchases from suppliers in a quarter are equal to 75 percent of the next quarter's forecast sales. The payables period is 60 days. Wages, taxes, and other expenses are 18 percent of sales, and interest and dividends are $60 per quarter. N...

**algebra**

31 is 9 more than twice a number

**physics**

A small, 300g cart is moving at 1.60m/s on an air track when it collides with a larger, 2.00kg cart at rest. After the collision, the small cart recoils at 0.820m/s. What is the speed of the large cart after the collision?

**tjc**

12/66 prime factor simplest from

**Maths**

consecutive numbers means one right after the other so if your first number is x, your second number is (x+1), and your third number is (x+2). the equation will be set up like x+(x+1)+(x+2)=51 which then looks like x+x+1+x+2=51 then you combine like terms 3x+3=51 have x on one...

**college**

A farmer planted a field of BT 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 35 ears in 1/1000 of an acre. He determines that each ear has about 500 kernels on average. He also knows that a bushel contains about 97,000 kernels on average. Wha...

**physics**

A startled armadillo leaps upward, rising 0.596 m in the first 0.190 s. (a) What is its initial speed as it leaves the ground? (b) What is its speed at the height of 0.596 m? (c) How much higher does it go?

**math**

well you can separate t so that t(t+36)=0 then you have t=0 and t+36=0 meaning t=-36 so you have two answers for t I hope you got it and it helped.

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