Wednesday

July 29, 2015

July 29, 2015

Total # Posts: 380

**algebra**

simplify z-2/z-4 - z+1/z+4 + z-20/z^2-16
*May 31, 2012*

**algebra**

t^3+6t^2+9t,t^2-6t find Lcm
*May 31, 2012*

**algebra**

find Lcm of y^2-36 and y^2+14y+48
*May 31, 2012*

**algebra**

subtract, simplfy by removing a factor of 1 when possible. 19dc/d^2-c^2 - d-c/d+c
*May 27, 2012*

**ALGEBRA**

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state that has one numeral followed by two letters followed by four numerals? (Round to the nearest whole percent.)
*May 23, 2012*

**ALGEBRA**

A history teacher gives a 20 question T-F exam. In how many different ways can the test be answered if the possible answers are T or F, or possibly to leave the answer blank?
*May 23, 2012*

**ALGEBRA**

What are the odds in favor of drawing face card from an ordinary deck of cards? to
*May 23, 2012*

**ALGEBRA**

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state that has one numeral followed by two letters followed by four numerals? (Round to the nearest whole percent.)
*May 21, 2012*

**ALGEBRA**

Make a 5% offer on a Volkswagen New Beetle that has a sticker price of $22,120 and a dealer cost of $20,862. (Round your answer to the nearest dollar.)
*May 6, 2012*

**ALGEBRA**

Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,800 at 2.4% add-on rate for 5 years. (Round your answers to the nearest cent.)
*May 6, 2012*

**ALGEBRA**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. Assume 365 days in a year. (Round your answer to the nearest cent.) $3,000 balance, 21% ...
*May 6, 2012*

**ALGEBRA**

If the principal P = $500, the interest I = $525, and time t = 7 years, find the following. (a) What is the rate? % (b) What is the future value?
*May 6, 2012*

**ALGEBRA**

Convert the following credit card rate to the APR. Nebraska, 0.02192% daily rate. (Round your answer to the nearest whole number.)
*May 6, 2012*

**ALGEBRA**

Let U = {17, 18, 19, 20, 21, 22, 23}, B = {17, 20, 21, 23}, and C = {19, 20, 22, 23}. List all the members of the sets. (Enter solutions from smallest to largest. If there are any unused answer boxes, enter NONE in the last boxes.) B = C =
*May 6, 2012*

**math**

train A and train B traveling same direction. train A passes station 9:20, train B passes station 9:32, when will train B catch train A
*May 3, 2012*

**math**

y=1777x+27,153 number of y guns after 2000, that is x=0 coorespod to 2000, x=3, 2003 x=4. Predict number of gun deaths in 2004, 2009 and what year of gun deaths will be in 7606.
*May 3, 2012*

**math**

The width of a rectangle is fixed at 18cm. what length will make the perimeter greater than 86cm the lenngth must be greater than cm.
*May 3, 2012*

**algebra**

x+2y=9(1) x=8-2y(2)
*May 1, 2012*

**algebra**

evaluate z+y/9 for z=74 and y=16
*May 1, 2012*

**chemistry**

calculate the volume of 2.27 M Nal that would be needed to precipitate all the of the Hg +2ion from 166mL of a 2.08 M Hg(NO3)2 The equation for the reaction is 2 Nal(aq) + Hg(NO3)2(aq) > HgI2(s) + 2 NaNO3(aq) Please Help I'm really having trouble understanding organic ...
*April 30, 2012*

**chemistry**

calculate the molarity of an acetic acid solution if 83.71 mL of the solutions needed to neutralize103 mL of 1.08 M sodium hydroxide. the equation for the reaction is. HC2H3O2(aq) + NaOH(aq) >Na+(aq) + C2H3)2(aq) +H2O(aq) Please show your work i really don't understand ...
*April 30, 2012*

**chemistry**

how many grams of NaOH would be needed to make 896mL of a 139 M solution
*April 30, 2012*

**chemistry**

how many moles of sodium chloride are in 937 mL of a 1.88 M solution of sodium chloride?
*April 29, 2012*

**chemistry**

calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)
*April 29, 2012*

**chemistry**

calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)
*April 29, 2012*

**chemistry**

a salt solution is evaporated to dryness. If 25.7 g of the solution leaves 1,949 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution
*April 29, 2012*

**Chemistry**

the heat of fusion water is 335J/g,the heat of vaporization of water is 2.26kJ/g, the specific heat of water is 4.184J/deg/g. how many grams of ice at 0 degrees could be converted to steam at 100 degrees C by 9,574J
*April 27, 2012*

**Ashford University**

6 Heavy industry
*April 27, 2012*

**Ashford University**

1 Assassination
*April 27, 2012*

**ALGEBRA**

Find three ordered pairs that satisfy the equation. y = 5 x + 8
*April 26, 2012*

**ALGEBRA**

Fill in the blanks. (Round your answers to the nearest dollar.) Interest Principal Rate Time Future Value $437 $ 5% 8 yr $
*April 25, 2012*

**ALGEBRA**

If the principal P = $700, the interest I = $504, and time t = 6 years, find the following. (a) What is the rate? % (b) What is the future value?
*April 25, 2012*

**ALGEBRA**

If the principal P = $500, the rate r = 5 1 2 %, and time t = 1 year, find the following. (a) What is the amount of interest? $ Incorrect: Your answer is incorrect. (b) What is the future value?
*April 25, 2012*

**ALGEBRA**

Consider the following expression. \(x + 2 y - 2 z\) - (x - 2 y + 2 z) (a) Simplify the expression.
*April 25, 2012*

**ALGEBRA**

Solve the system. $ \left\{ \begin{tabular}{l} $ y = x + {\color{red}-3} $ \\ $ y = -{\color{red}2} x + {\color{red}9} $ \end{tabular} \right. $ x = y =
*April 25, 2012*

**ALGEBRA**

Solve the equations by finding the exact solution. (a) (1)/(3) x - 1 = 1 x = (b) (1)/(3) log\(x\) - log\(10\) = 1
*April 25, 2012*

**ALGEBRA**

A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.5 multiplied by 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.) M =
*April 25, 2012*

**ALGEBRA**

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2+9 x+20
*April 25, 2012*

**ALGEBRA**

Graph the following first-degree inequality in two unknowns. $$ y > {\color{red}2} x - {\color{red}2} $$
*April 25, 2012*

**ALGEBRA**

Find the functional values requested in the problem. h(x)=3 x-1 (a) h(0) = (b) h(-7) =
*April 25, 2012*

**ALGEBRA**

Solve the exponential equation. Give the exact value for x. (Express all logarithmic functions in terms of ln(x) in your answer.) text((a) ) e^x = 10 x = text((b) ) e^x = 2.0 x = text((c) ) e^x = 37.9 x =
*April 25, 2012*

**ALGEBRA**

Graph the equation. x = -6
*April 25, 2012*

**ALGEBRA**

(log\(A\))/(log\(B\)) = (ln\(A\))/(ln\(B\)) (log_b\(A\))/(log_b\(B\))=log_b\((A)/(B)\) text(In )log_b\(N\), text( the exponent is )N. text(If ) log_1.5\(8\)=x, text( then ) x**(1.5) =8. log\(500\) text( is the exponent on ) 10 text( that gives ) 500.
*April 25, 2012*

**ALGEBRA**

The product of two consecutive positive even numbers is 528. What are the numbers? (Enter solutions from smallest to largest.) and
*April 25, 2012*

**ALGEBRA**

Solve the inequality. (Enter INFINITY for infinity and -INFINITY for -infinity as needed.) 6<=5 - y
*April 25, 2012*

**ALGEBRA**

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) x2 - 5x + 5 = 0 x = x =
*April 25, 2012*

**ALGEBRA**

Write the expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). log_(7) \(80\)
*April 25, 2012*

**ALGEBRA**

Contract the expressions. That is, use the properties of logarithms to write each expression as a single logarithm with a coefficient of 1. text((a) ) ln\(3\)-2ln\(4\)+ln\(8\) text((b) )ln\(3\)-2ln\(4+8\) text((c) )ln\(3\)-2(ln\(4\)+ln\(8\))
*April 25, 2012*

**ALGEBRA**

Use the definition of logarithm to simplify each expression. text((a) )log_(3b) \(3b\) text((b) )log_(4b) \((4b)^6\) text((c) )log_(7b) \((7b)^(-11)\)
*April 25, 2012*

**ALGEBRA**

The velocity v (in feet per second) of a rock dropped into a well is related to time (in seconds) by the formula v = 32t. What is the velocity of the rock at the indicated instant? Write your answer in the form (t, v). (a) when the rock is released ( , ) (b) after 9 seconds
*April 25, 2012*

**chemistry**

the heat of fusion water is335 J/g. The heat of evaporization of water is 2.26 kJ/g, the specific heat of ice is 2.05 J/Deg/g, the specific heat of steam is 2.08 J/deg/g and the specific heat of liquid water is 4.184 J/deg/g. How much heat would be needed to convert 12.09 g of...
*April 24, 2012*

**chemistry **

the heat of fusion of water is 335 J/g. How much heat would be required to melt 97.8 g of ice
*April 24, 2012*

**chemistry**

the heat of vaporizaton of water is 2.26kJ/g. How much heat is needed to change 4.2 g of water to steam.
*April 24, 2012*

**chemistry**

the heat of vaporization of water is 2.26kJ/g. how much heat is needed to change 2.55 g of water to steam?
*April 20, 2012*

**Chemistry**

What mass of ammonia is produced when 1.73 L of nitrogen (STP)react completely in the following equation? N2 + H3 > 2NH3
*April 17, 2012*

**Chemistry**

what volume of ammonia gas will be produced when 8.01 L of hydrogen react completely in the following equation. N2 + 3H2 > 2NH3 this stuff is so confusing because one little word seems to change the entire process for solving.
*April 17, 2012*

**Chemistry**

what volume of ammonia gas will be produced when 1.26L of nitrogen react completely in the following equation? N2 + 3H2 > 2NH3 Please if someone can just give me the order of operation it will be much appreciated because chemistry is just not my forte.
*April 16, 2012*

**Chemistry**

What mass of oxygen is consumed when 1.73L of carbon dioxide (STP) are produced in the following equation. C4H8 + 6 O2 > 4 CO2 + 4 H2O please help and show your work. My answer for this problem is 11.12g/O2. I have no confidence in my answer.
*April 16, 2012*

**Chemistry**

What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.
*April 16, 2012*

**ALGEBRA**

3x2 = 17x + 6
*April 16, 2012*

**ALGEBRA**

Solve the equations. ((a) ) (2 L)/(5) = 2 L = ((b) ) 4 = (4 M)/4 + 8 M =
*April 16, 2012*

**ALGEBRA**

Consider the following expression. 3(x - 2) - 9(x**2 + 7 x + 4) - 5(x + 8) (a) Simplify the expression.
*April 16, 2012*

**ALGEBRA**

The Greek God Zeus ordered his blacksmith Hephaestus to create a perpetual water-making machine to fill Zeus' mighty chalice. The volume of Zeus' chalice was reported to hold about one hundred and fifty sextillion gallons (that is a fifteen followed by twenty-two zeros...
*April 16, 2012*

**ALGEBRA**

Evaluate the given expressions (to two decimal places). (a) ) log((23.0) (b) ) log_(2) \(128\) (c) ) log_(9) \(1\)
*April 16, 2012*

**ALGEBRA**

Use the definition of logarithm to simplify each expression. (a) )log_(3b) \(3b\) ((b) )log_(8b) \((8b)^6\) (c) )log_(10b) \((10b)^(-13)\)
*April 16, 2012*

**ALGEBRA**

Evaluate the given expressions (to two decimal places). (a) log((23.0) ((b) log_(2) \(128\) text((c) ) log_(9) \(1\)
*April 16, 2012*

**ALGEBRA**

(a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log_(8.5) \(127\) = Give a calculator approximation (correct to four decimal places). log_(8.5) \(127\) ~=
*April 16, 2012*

**ALGEBRA**

Select all statements that are true. (log_b\(A\))/(log_b\(B\))=log_b\(A-B\) (If ) log_1.5\(8\)=x, text( then ) x**(1.5) =8. log\(500\) text( is the exponent on ) 10 text( that gives ) 500. text (In )log_b\(N\), text( the exponent is )N. text( If ) 2log_3\(81\)=8, text( then ) ...
*April 16, 2012*

**ALGEBRA**

Find a simplified value for x by inspection. Do not use a calculator. (a) log5(25) = x (b) log2(16) = x
*April 16, 2012*

**ALGEBRA**

Contract the expressions. That is, use the properties of logarithms to write each expression as a single logarithm with a coefficient of 1. text ((a) ) ln\(3\)-2ln\(4\)+ln\(8\) ((b) ln\(3\)-2ln\(4+8\) (c) )ln\(3\)-2(ln\(4\)+ln\(8\))
*April 16, 2012*

**ALGEBRA**

Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3
*April 16, 2012*

**ALGEBRA**

Solve the equations by finding the exact solution. (a) 1 = x - 1 (B)
*April 16, 2012*

**ALGEBRA**

ln\(e\) = ln\( sqrt(2)/x \) -ln\(e\)
*April 16, 2012*

**ALGEBRA**

(1)/(2) log\(x\) - log\(10000\) = 4
*April 16, 2012*

**ALGEBRA**

Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3
*April 16, 2012*

**ALGEBRA**

A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.4 multiplied by 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.)
*April 16, 2012*

**ALGEBRA**

Find the number of decibels for the power of the sound. Round to the nearest decibel. A rock concert, 5.21 multiplied by 10-6 watts/cm2
*April 16, 2012*

**ALGEBRA**

6y + 11x = -9 (a) Solve the equation for y. (Do not use mixed numbers in your answer.) y =
*April 12, 2012*

**ALGEBRA**

Solve the inequality. (Enter INFINITY for infinity and -INFINITY for -infinity as needed.) 9-x>=4 x + 34
*April 11, 2012*

**ALGEBRA**

Solve the inequality. (Enter INFINITY for infinity and -INFINITY for -infinity as needed.) 3<=1 - y
*April 11, 2012*

**ALGEBRA**

Factor the expression by using areas. x^2+2 x-8
*April 11, 2012*

**ALGEBRA**

x2 - 5x + 5 = 0
*April 11, 2012*

**ALGEBRA**

Solve the equation. 2(W + 4) - 3(W + 2) = 0
*April 11, 2012*

**ALGEBRA**

text((a) ) (4 L)/(5) = 3 L = Incorrect: Your answer is incorrect. text((b) ) 3 = (4 M)/4 + 11
*April 11, 2012*

**ALGEBRA**

Let x = 1, y = 3. Find the value of the given capital letter. N = x**2 + 2 xy + y**2 + 3
*April 11, 2012*

**ALGEBRA**

6y + 11x = -9 (a) Solve the equation for y. (Do not use mixed numbers in your answer.) y =
*April 11, 2012*

**ALGEBRA**

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2-5 x-6
*April 11, 2012*

**ALGEBRA**

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2+17 x+70
*April 11, 2012*

**Chemistry**

a 3.67L flask is filled with carbon monoxide at 27 degrees C until the pressure is 1.27 atm. Calculate the total pressure after 3.42 moles of carbon dioxide has been added to the flask. (R=0.082 L-atm/K mol)
*April 11, 2012*

**ALGEBRA**

$$ x = \dfrac{1}{{\color{red}2}} y^2 $$
*April 10, 2012*

**ALGEBRA**

Assume f(x) = x2 + 3. Find the functional value requested. f(-7) =
*April 10, 2012*

**ALGEBRA**

Find three ordered pairs that satisfy the equation. y = x + 2
*April 10, 2012*

**Chemistry**

Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles He, Ne, and Ar at a total pressure of 5.26atm
*April 10, 2012*

**chemistry**

Calculate the partial pressure of propane in a mixture that contains equal numbers of of moles of propane (C3H8) and butane (C4H10) at 20 degrees C and 844 mmHg. (R=0.082 L-atm/K mol)
*April 10, 2012*

**ALGEBRA**

Find three ordered pairs that satisfy the equation. y = 5 x - 4 (0, ), (1, ), (2, )
*April 10, 2012*

**ALGEBRA**

Assume f(x) = x2 + 3. Find the functional value requested. f(-7)
*April 10, 2012*

**algebra**

Find three ordered pairs that satisfy the equation. y = x + 2
*April 10, 2012*

**Trig.**

What is the trigonmetric fact for sin 3.14/8?
*April 5, 2012*

**Algebra II**

if y varies directly as x, if y=80 when x=32, find x if y=100
*March 22, 2012*

**math**

A student invests two sums of money at 3% and 4% interest, receiving a total of $110 in interest after 1 year. Twice as much money is invested at 4% than at 3%. Find the amount invested at each interest rate. Where do I even begin with this?
*March 13, 2012*