04/17/16

Julio is playing a game with a standard 6-sided number cube.
Julio is playing a game with a standard 6-sided number cube. Every time he rolls an even number, he loses $3. Every time he rolls an odd number, he wins the amount of money showing on the face. Is... more
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04/11/16

simplify the expression, if possibel. state the excluded values, if any. 5x-5/10x2-25x+15
Simplify the expression, if possible. State the excluded values, if any.   5x-5/10x2-25x+15  
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04/11/16

A jar contains 3 red marbles, 5 green marbles, and 7 black marbles. First, a marble is taken and put into the jar again. Then another marble is drawn.
 What is the probability of choosing a red marble and a black marble? A. 3/7B. 1/21C. 7/75D. 1/10
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04/10/16

Please explain how to solve this
Chromium metal can be produced from the high temperature reaction Cr2O3 [chromium ||| oxide ] with silicon or aluminum by each of the following reactions2 Cr2O3 + 3Si -> 4 Cr + SiO2Calculate the... more
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04/10/16

integral 3x^3/(7x^4+8)
evaluate the following integrals  
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04/10/16

In triangle abc a=6 b=8 and sinc =1/4 whats the area of triangle abc
None 
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04/10/16

Quadratic word problem
a person standing at the edge of a 32 meter building throws a baseball vertically upward. The quadratic function h(t)= —16t^2 + 64t + 32 models the balls height above the ground , h(t) in meters ,... more
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04/10/16

Redox titration question? Determine the molarity of a solution? PLEASE HELP!!
Q1. Iron is often used to standardize permanganate solutions. A 0.158 g sample of pure iron wire was dissolved in dilute sulfuric acid to form a solution of iron (II) sulfate. This was titrated... more
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04/09/16

Best estimate of the total volume of water used by the factory between 6 am and 9 am
A village wishes to measure the quantity of water that is piped to a factory during a typical morning. A gauge on the water line gives the flow rate (in cubic meters per hour) at any instant. The... more
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04/09/16

General and particular solutions for 3 differential equations
Hello, I've got some problems solving general and particular solutions of differential equations.  I hope to understand how they work, if you could help me with a detailed solution for these 3... more
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04/09/16

Show sin(x) is less than or equal to x
Show that sin(x)≤x for all x≥0 (hint look at the derivative of x-sin(x))
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04/03/16

The current is {? } amperes?
If the Voltage V in an electric circuit is held constant, the current I is inversely proportional to the current R. If the current id 60 amperes when the resistance is 285 ohms,  find the current... more
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03/19/16

Positive/negative angle
Assume the following angle is in standard position. Fnd a positive and negative whose absolute value is less then 360 degrees and is coterminal with the given angle:-485 degrees
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03/19/16

heat of formation
Write the heat of formation equation for: A) NaCl B) NaOH C) C2H6 D) NO2
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03/16/16

Use the Quadratic Formula to solve the equation. x^2+10x+35=0
Please help! 
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03/16/16

chemistry- word problem
A solution is to be standardized by titration KMnO4(aq) against As2O3(s). A 0.1072-g sample of As2O3 requires 24.35 mL of the KMnO4(aq) for its titration.5As2O3+4MnO-4+9H2O+12H+→10H3AsO4+4Mn2+. ... more
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02/27/16

write the logarithm as a single expression logc 4x+3 (logc x-logc y)
Single expression
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02/27/16

Mixture Problem
 How many liters of a 15% NaCl solution should be mixed with 2 L of a 20% NaCl solution to obtain a 16% NaCl solution?
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02/21/16

How far apart will they be from each other (assuming there are no wind conditions) after one hour
There are two airplanes that pass each other, one headed north and the other south. One of the planes is a jet traveling at 563mph, the other a biplane traveling at 118mph. The jet planes consumes... more
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02/15/16

Rhonda added 140 to one third of a number for a result of 216. What is the number?
Rhonda added 140 to one third of a number for a result of 216. What is the number?
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02/15/16

could someone please help me with math?
Apply the distributive property (assume all variables are non zero): ax(1/a+1/x)   i don't know how to distribute monomials. please help me
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02/15/16

chemistry- word problem
There are four naturally occurring isotopes of chromium. Their masses and percent natural abundances are 49.9461 u, 4.35%; 51.9405 u, 83.79%; 52.9407 u, 9.50%; and 53.9389 u, 2.36%.  Calculate the... more
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02/15/16

chemistry- word problem
An isotope of silver has a mass that is 6.68374 times that of oxygen-16. 16O has a mass of 15.994915 u. What is the mass in u of this isotope?Express your answer to six significant figures and... more
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02/15/16

maximum frequency in band limited signal x(t) is 5 khz. Then maximum frequency in x(t)cos(2000*3.14t) will be _________
maximum frequency in band limited signal x(t) is 5 khz. Then maximum frequency in x(t)cos(2000*3.14t) will be _________
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02/13/16

in a parallelogram ABCD ,it is being given that AB=10 CM qnd the altitudes corresponding to the sides AB and AD are DL=6 CM AND BM= 8 cm respectively find AD
the question is not having any more discription                            .  
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