Monday

September 1, 2014

September 1, 2014

Total # Posts: 342

**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*

**Geometry**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation? 1 mile = 5,280 ft
*February 29, 2012*

**math - integers**

5. Robert, a real estate agent, drove 170 kms north from his home. The following day, he drove 54 kilometers south. How far and in what direction did he have to drive to get back home?
*February 7, 2012*

**math - integers**

4. The temperature is falling 3 degrees per hour. How many degrees has it fallen altogether from 12 noon to 12 midnight?
*February 7, 2012*

**math - integers**

3. Arlan and Bryan started driving from the same place. Arlan drove at an average speed of 55 kph, Bryan drove at an average speed of 65 kph. How far apart were the after 2 hours?
*February 7, 2012*

**math - integers**

2. One Saturday morning, Liza jogged 15 blocks from her house and then decided to go back 5 blocks by the same road. How many blocks away is she from her house?
*February 7, 2012*

**math - integers**

1. Freddy lives 34kms south of Makati City while Misael lives 34kms north of Makati City. How far is Freddy's place from Misael's place?
*February 7, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 28, 2012*

**geometry**

if I want a ramp with a 30 foot length, and a 5 percent up grade starting at 0, how high will the tall end be?
*January 27, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 27, 2012*

**math**

the absolute value of an integer is always greater than the integer. True or False?
*January 27, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 27, 2012*

**geometry**

The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2
*January 17, 2012*

**geometry**

Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees
*January 17, 2012*

**math**

Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees
*January 16, 2012*

**geometry**

The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2
*January 16, 2012*

**math**

find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long.
*January 10, 2012*

**math**

a rectangle has a perimeter of 22cm and an area of 30 cubic meter. what are its dimensions?
*January 8, 2012*

**math**

2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid.
*January 8, 2012*

**math**

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long.
*January 8, 2012*

**math **

the inner circumference of a ring is 1.2pi cm. the outer circumference of the ring is 2pi cm. find the area of the region bounded by the outer and inner circumference.
*January 8, 2012*

**math**

4. the area of a rectangle is 450 m^2. both the length and width of the rectangle are increased by 10%. what is the area of the new rectangle?
*January 8, 2012*

**math**

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long. 2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid. 3. a rectangle has a ...
*January 7, 2012*

**math**

a square pyramid has an altitude measuring 5 cm and a side of its bases measuring 6 cm. find the lateral area of the pyramid.
*January 7, 2012*

**Calc **

Suppose 4y + xy = 2. Evaluate d^2x/d2^y at the point (-3, 2).
*December 28, 2011*

**ALGEBRA**

Suppose the modified quota is 8.57. Fill in the blanks, and round your answers to two decimal places.
*December 18, 2011*

**Chemistry**

:::F-N:-F::: -H
*November 21, 2011*

**physics**

A bat at rest sends out ultrasonic sound waves at 51.1 and receives them returned from an object moving directly away from it at 22.3 .
*November 16, 2011*

**Biology**

the biome with the fewest seasonal changes is?
*October 29, 2011*

**physics**

A jetliner can fly 5.57 hours on a full load of fuel. Without any wind it flies at a speed of 2.43 x 102 m/s. The plane is to make a round-trip by heading due west for a certain distance, turning around, and then heading due east for the return trip. During the entire flight, ...
*October 6, 2011*

**physics**

An airplane with a speed of 85.1 m/s is climbing upward at an angle of 54.4 ° with respect to the horizontal. When the plane's altitude is 759 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...
*October 6, 2011*

**physics**

Relative to the ground, a car has a velocity of 14.4 m/s, directed due north. Relative to this car, a truck has a velocity of 24.8 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
*October 6, 2011*

**physics**

A ball is thrown upward at a speed v0 at an angle of 59.0¢ª above the horizontal. It reaches a maximum height of 8.7 m. How high would this ball go if it were thrown straight upward at speed v0?
*October 6, 2011*

**physics**

A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.8 m/s at an angle of 30.0¢ª above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...
*October 6, 2011*

**math**

Help. I cannot solve this problem.\ 3(a+4)/9 = 2a - 12
*October 4, 2011*

**physics**

A speedboat starts from rest and accelerates at +1.68 m/s2 for 5.43 s. At the end of this time, the boat continues for an additional 8.16 s with an acceleration of +0.475 m/s2. Following this, the boat accelerates at -0.866 m/s2 for 7.54 s. (a) What is the velocity of the boat...
*October 3, 2011*

**physics**

An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 2.03 m/s2. The magnitude of the car's velocity at the end of ...
*October 3, 2011*

**physics**

In an historical movie, two knights on horseback start from rest 72.6 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.280 m/s2, while Sir Alfred's has a magnitude of 0.250 m/s2. Relative to Sir George's ...
*October 3, 2011*

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