# Posts by Rony

Total # Posts: 37

Chemistry
45g/36.5g/mol= 1.233mola*1000/1500= 0.822M

chemistry
C1V1=C2V2 law can be applied because the ratio is 1:1

acconting
purchased a machine of Rs. 1000000 on 1/1/13, the service life of the machine is 10 years. The company calculate depreciation on straight line basis, which is = cost of the asset/no.of years

Statistics

marketing
she purchase a lamp for Rs. 900 and sell it for Rs. 1500, determine the following a)rupee markup, b)markup percentage on cost, c)markup percentage of selling price

social study
Z located on the top of the globe X located in the center of the globe U located almost in the bottom of the globe please help

social study
A comparison of the average temperatures on any given day at points z,x, and U on the glove would probably show that the temperature at point X is? 1 warmer than at z and cooler than at U 2 warmer than at z and cooler than at U 3 cooler than at z and warmer than at U 4 cooler ...

Science
it is cool

chemistry 32
Final conc=(Initial volm 1.0mL*initial conc 0.1M)/(Final volm 10mL)= 0.01M Ans=0.01M

Physics
F = MA F = qv*B ma = qvb a = qbv/m m = mass of electron q = charge of electron

math (pre-calc)
Solve for x: 1. 3^2x+3^x+1-4=0 2. log3(x=12)+log3(x+4)=2 3. lnx+ln(x+2)=4 4. 3*4^x+4*2^x+8=0

i know... a^2=b^2+c^2-2bc cos A but i didn't get the correct answer...which is 14 is it like a^2=20^2+14.5^2-2(20)(14.5) cos135

the playground at a daycare center has a triangular-shaped sandbox. Tow of the sides measure 20 feet and 14.5 feet and form and included angle of 45 degree. Find the length and the third side of the sandbox to the nearest tenth of a foot.

The Vietnam Veterans Memorial in Washington, D.C., is made up of two walls, each 246.75 feet long, that meet at an angle of 125.2°. Find, to the nearest foot, the distance between the ends of the walls that do not meet.

If a is an angle in standard position and its terminal side passes through the point (-3,2), find the exact value of csc a. Answer: radical 13/2

math (pre-calc)
Analyzing a Stock. The beta, B of a stock represents the relative risk of a stock compared with a market basket of stocks, such as Standard and poor's 500 Index of stocks. Beta is computed by finding the slope of the line of best fit between the rate of return of the stock...

If θ is an angle in standard position and its terminal side passes through the point (−3,2), find the exact value of cscθ . I know the answer...but i want to know how you get the answer... The answer is radical 13/2

A circle has a radius of 4 inches. In inches, what is the length of the arc intercepted by a central angle of 2 radians? which of the following is the answer: 1) 2 radian 2) 2 3) 8 radian 4) 8

it is cosx thanks

the expression cos4x cos3x + sin4x sin3x is equivalent to which one of the following is the answer: 1) sinx 2) sin7x 3) cosx 4) cos7x

i know the answer...it is 197º40’ but i want to know how you get the answer... some one plz help... thanks

find, to the nearest minute, the angle whose measure is 3.45 radians.

Math
A shoe manufacturer determines that the annual cost of making x pairs of one type of shoe is \$30 per pair plus \$100,000 in fixed overhead costs. Each pair of shoes that is manufactured is sold wholesale for \$50. a. Find the equations that model Revenue and cost and graph each ...

Math
Find the real zeros of f(x)=(x-1)^2 + 5(x-1)+4

Math
Find the zeros of f(x)=(x-1)^2 + 5(x-1)+4

Math
The weekly rental cost of a 20 foor recreational vehicle is \$129.50 plus \$0.15 per mile. -Find a linear function that express the cost C as a function miles driven m. - What is the rental cost if 860 miles are driven? -How many miles were driven if the rental cost is \$213.80?

Math
f(x)=2x^2+1 and g(x)=3x-2 find f(x+h)-f(x)

physics
some one help me with this question..plz.. Thank You.

physics
A potential difference of 0.90 V exists from one side to the other side of a cell membrane that is 5.0 NM thick. What is the electric field across the membrane?

physics
Resistors R1, R2, and R3 have resistances of 15.0 Ohms, 9.0 Ohms and 8.0 Ohms respectively. R1 and R2 are connected in series, and their combination is in parallel with R3 to form a load across a 6.0-V battery. -What is the total resistance of the load? -What is the current in...

physics
A 15.0 Ohms resistor is connected in series to a 120V generator and two 10.0 Ohms resistors that are connected in parallel to each other. -What is the total resistance of the load? -What is the magnitude of the circuit current? -What is the current in one of the 10.0 Ohms ...

physics
i know when its paralle 1/Req= 1/R1 + 1/R2...

physics
Two resistors, one 12Ohms and the other 18 Ohms, are connected in parallel. What is the equivalent resistance of the parallel combination?

physics
r is equal 1.25cm

physics
What is the force between two charged spheres 1.25 cm apart if the charge on one sphere is 2.50 C and the charge on other sphere is 1.75 X 10^-8 C

physics
a potential difference of 0.90 V exists from one side to the other side of a cell membrane that is 5.0 nm thick. What is the electric field across the membrane?

Chemistry
The number of Pb atoms per unit cell

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