Saturday

April 19, 2014

April 19, 2014

Total # Posts: 3,111

**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.

**6th grade**

where can i find a map for ancient egypt 3100 B.C.?

**PHYSICS**

1.Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. If your arm is 0.99 m long (from shoulder to fist) and the distance from the handle to the surface of the water is 20.5 cm, what minimum speed is required? 2.A 1010 kg c...

**Chemistry**

also is HC2H3O2 soluble or insoluble??

**Chemistry**

Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...

**Chemistry**

Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...

**economics**

P 2 3 4 5 6 7 8 9 10 11 12 13 14 QD 400 380 360 340 320 300 280 260 240 220 200 180 160 QS 40 80 120 160 200 240 280 320 360 400 440 480 520 Suppose the quota is lifted and a price ceiling of 11 is imposed. Find the new market price. How much will be actually be sold?

**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

**calculus**

find the equation of the tangent line to the curve y = 2√2/x+1 at the point p=1,2/3.please show working. i would appreciate if you do it before 12:05pm today

**calculus**

find the equation of the tangent line of the curve y=root x divideed by x+1 at the point p = 2, root 2 divided by 3. show working please.

**calculus**

there are two tangents lines to the curve f(x) = 3x^2 that pass through the point p =0,-1 find the x coordinates of the point where the tangents line intersect the curve, please show working.

**calculus**

there are two tangents lines to the curve f(x) = 3x^2 that pass through the point p =0,1 find the x coordinates of the point where the tangents line intersect the curve

**physics**

I already answered the question. Thanks anyway

**physics**

A small, m = 2.00 g plastic ball is suspended by a L = 25.0 cm long string in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 14.0° angle with the vertical as indicated, what is the net charge on the ball?

**math**

no

**algebra**

how to graph y=x+3

**algebra**

gracias i love you<3 no homo

**algebra**

a 23 foot cable is cut into two pieces, one three times as long as the other. how long are the pieces?

**algebra**

if 7 times a certain number is subtracted from 6, the result is 5 times the number. what is the number?

**algebra**

thanks a lot i really needed that one

**algebra**

if 7 times a certain number is subtracted from 6, the result is 5 times the number. what is the number?

**algebra**

if 7 times a certain number is 7 times the number. what is the number?

**algebra**

if 7 times a certain number is subtracted from 6, the result is five times the number, find the number.

**algebra**

a 28 ft rope is cut into 2 pieces. one is 3 feet longer than the other. how long are the pieces?

**physics**

500

**biology**

Design a way to determine the effects of different concentrations of starch on the mass of dialysis tubing bags when the bags are allowed to sit water for several hours. Plan to put different concentrations of starch solutions in the bags. You may want to use iodine as a visua...

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.97 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

**physics**

Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. In the event of an impact, the passenger compartment decelerates over a distanc...

**11th grade**

How do you solve for x^2 + square root of 6 times x -3 is > or = to 0?

**physics**

Consider the system shown in the figure. Block A has weight 4.91 N and block B has weight 2.94 N. Once block B is set into downward motion, it descends at a constant speed. Assume that the mass and friction of the pulley are negligible. Whats the coefficient of kinetic frictio...

**physics**

A 1600 kg car traveling at a speed of 31 m/s skids to a halt on wet concrete where uk = 0.60. how long are the skid marks?

**Physics**

9.5

**calculus**

find the derivative of the function (6x+1)/(19x+1)^1/2 PLEASE EXPLAIN IM LOST

**japan**

How do the Japanese write 4x + 3y = 17?

**math**

(-21)-(-9)/-21-(-21)How would i find the soultion to this problem

**math**

is it 32?

**calculus**

disregard the 1 from cm/second and 2 from seconds thanks

**calculus**

The position of a particle moving in a straight line during a 2-second trip is given below. s(t) = 2t 2 - 6t + 7 cm (a) What is the average velocity for the entire trip? (Assume the 2 second interval starts at t = 0.) 1 cm/second (b) Find a time at which the instantaneous velo...

**Chemistry**

In trial one the mass of silver oxide is .5g. The mass of silver metal product is .431 grams. In trial two the silver oxide=.498 and silver metal=.388. How do you use this information and the conservation of mass to calculate the mass of oxygen that combined with the silver?

**algebra equation**

How do I find a formula for the area of a circle with a circumference c?

**science**

What is the distance between two neighboring bunches of molecules?

**math**

how to simplify 2x^3-x-3/(x+1)

**math**

how to simplify 2x^3-x-3/(x+1)

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