Saturday

October 10, 2015
Total # Posts: 1,334

**Math**

- square root of 63 is closest to which integer? I'm thinking it would be -8 but that would be -64 is it okay if it surpasses 63 by one?
*October 6, 2015*

**Chemistry**

A 0.45-g sample of vegetable oil is placed in a calorimeter. When the sample is burned, 18.9 kJ is given off. What is the energy value (kcal/g) for the oil?
*September 30, 2015*

**MATH**

EXPLAIN HOW THE 6 IS IN THE THOUSANDS PLACE IN THE NUMBER 364,021
*September 29, 2015*

**CHEMISTRY**

Suppose a sample of hot iron is dropped in a cup of room temperature water. a) what happens to the temperature of the iron & water? b.) in what direction does heat flow occur? c.) when does heat flow stop? d.) assuming no heat is lost to the environment, compare heat gained ...
*September 29, 2015*

**MATH PROBABILITY**

The probability of a machine producing a defective product is .08. Find the probability that, in a run of 200 products, there are exactly 12 defective products
*September 17, 2015*

**physics**

A sports car, traveling 30 m/s, is 220 meters behind a truck. If the truck is traveling 22 m/s, how much time until the sports car passes the truck.
*September 16, 2015*

**Math**

Cindy and Clyde sold a $450,000 home earning a 15%commission on the sale. As owner of the company Cindy gets 60% of the commission and Clyde gets the rest. How much money does each person get? I'm stuck on this problem!
*September 15, 2015*

**biology**

P1000. The number attached to the P is the number of microliters the micropipettor can hold.
*September 15, 2015*

**ap biology**

It withdraws the sample.
*September 15, 2015*

**Chem**

suppose a balloon is filled with air. How would the volume of the air in the balloon change with an increase in temperature? Can someone help explain this to me and what does the particles of matter have to do with this? 2.) How would the volume of the air in the balloon ...
*September 15, 2015*

**Math**

A swimming pool is 10 m long, 8 m wide, and 1.5 m deep. The interior of the pool will be painted with water resistant paint. How much area will be covered with the paint?
*September 8, 2015*

**English **

I had to read this paragraph to see if there was any puncuation and grammar mistakes and also with the content and correct citations. I found that the person used "this" which is not appropriate because the reader doesn't what "this" is. There seems to ...
*September 8, 2015*

**Math**

My Name is Michael Emmanuel
*September 7, 2015*

**Math**

You and your friend part at an intersection. You drive off north at a constant speed, and your friend drives east at a speed that is 10 mph higher. After 4 hours the distance between you and your friend is 368.78 miles. You have been driving at mph. (Round to the nearest mile).
*September 7, 2015*

**PRE CALCULUS**

1.) The cash flow per share for the Timerland Co. was $0.18 in 1995 and $4.04 in 2003. Write a liner equation that gives the cash flow per share in terms of the year. Let t=5 represent 1995. Then predict the cash flows for the years 2008 and 2010. 5.) The University of ...
*September 4, 2015*

**Pre Calculus**

Rate: $4.50 increase per year
*September 3, 2015*

**Pre Calculus **

In exercise 100, you are given the dollar value of a product in 2005 and the rate at which the value of the product is expected to change during the next 5 years. Use this Info. to write a linear equation that gives the dollar value V of the product in terms of the year t. (...
*September 3, 2015*

**Geometry**

Ms.sue how did you get 9 and 10
*August 26, 2015*

**algebra**

find the slope of each line. y=-1/2x=1
*August 20, 2015*

**AP chem**

if a metal ore contains 12.7% pure metal, how many pounds of pure metal can be obtained from 62 pounds of metal ore
*August 10, 2015*

**Urgent math**

The initial size of a culture of bacteria is 1000. After one hour the bacteria count is 4000. (a) Find a function n(t) = n0ert that models the population after t hours. n(t) = b)Find the population after 1.5 hours. (Round your answer to the nearest whole number.) n(1.5) = ...
*August 3, 2015*

**Urgent math**

i need help with these two homework problems Use the Laws of Logarithms to combine the expression into a single logarithm log2 5 − 5 log2 x + 1/2 log2(x + 1) Solve the logarithmic equation for x log2(x + 2) + log2(x − 1) = 2
*August 3, 2015*

**Urgent math**

g(x) = log3(x + 3) state its domain, range, and asymptote. i am having trouble with this can somebody help me?
*August 3, 2015*

**pre-cal**

Change of Base Formula logb x = loga x/loga b to evaluate log14 41. (Round your answer to three decimal places.) i need a step by step preview please
*August 3, 2015*

**Science**

What are the reasons why human being is considered the most intelligent animal in the earth?
*June 29, 2015*

**Science**

What are the reasons why human being is considered the most intelligent animal in the whole universe?
*June 29, 2015*

**Astronomy**

If you lived on Mars, which of the planets would exhibit retrograde motion? Explain.
*June 3, 2015*

**Physics**

In deep space, a 636 kg space probe, travels with an initial velocity of 19 m/s. Retro-rockets fire, producing a 212 N force in the opposite direction of the probe's initial velocity. How many seconds until the probe has a velocity of 22 m/s in the opposite direction of ...
*May 27, 2015*

**Physics**

In deep space, a 636 kg space probe, travels with an initial velocity of 19 m/s. Retro-rockets fire, producing a 212 N force in the opposite direction of the probe's initial velocity. How many seconds until the probe has a velocity of 22 m/s in the opposite direction of ...
*May 26, 2015*

**chem**

what is the net ionic equation of tin and potassium carbonate: Sn(s) + K2CO3(aq) --> K(s) + SnCO3(aq) show the steps plss
*May 21, 2015*

**math**

Explain how to write a function rule from the table below. Then write a function rule. x 2 4 6 y 1 0 -1
*May 11, 2015*

**chemistry**

In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?
*May 10, 2015*

**History**

1.B 2.C 3.B 4.B 5.C Are these correct? @Ms.Sue
*April 29, 2015*

**History **

1.Which 19th century movements were most associated with each another? A- Socialism and imperialism B- Transcendentalism and utopianism C- abolitionism and manifest destiny D- romanticism and democratic-republicanism 2.The writings of Transcendentalists had the greatest ...
*April 29, 2015*

**Geometry**

The front wheel of a child's tricycle has a 10-inch radius and the rear wheels have a 6-inch radius. The pedals are attached to the front wheels by arms that are 7 inches long. How far does a pedal travel when the rear wheels make one revolution?
*April 28, 2015*

**History**

@Ms.Sue please check this
*April 28, 2015*

**History **

1.Which answer best describes a reason why industries flourished in New England? A- The people in New England had more work experience. B- New England had more lakes to use for water in factories. C- The soil was better than in the South so they could grow better crops. D- The...
*April 28, 2015*

**History**

@Ms.Sue please check
*April 27, 2015*

**History **

Which explains why the Compromise of 1850 intensified the argument about slavery? A- People for and against slavery migrated to Western stats to influence laws. B~Free states in the West added more antislavery votes to Congress. C~The equal division of slave and free ...
*April 27, 2015*

**Calculus**

A particle moves along the curve y = 3x2 + 1 in such a way that the y value is increasing at the rate of 3 units per second. At what rate is x changing when x = 2?
*April 25, 2015*

**calculus**

In the space below, provide the smaller of the two positive integers that add to 40 and have the largest possible product
*April 22, 2015*

**calculus**

If 800 feet of fencing is used to enclose a rectangular plot of land that borders a river, what is the maximum area that can be enclosed? Answer to the nearest square foot without commas. For example, if the answer is 1,000, write 1000.
*April 22, 2015*

**math**

suppose you covered your desktop with small squares.Then you cover your desktop with large squares.Would you use more small squares or large squares?Explain
*April 22, 2015*

**Math**

Victor should say 35, if I am correct
*April 21, 2015*

**calculus**

A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground. Type your answer in the ...
*April 20, 2015*

**History**

@Ms.Sue I fixed it
*April 20, 2015*

**History**

1. How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? A)Both lived in Boston and were Underground Railroad conductors. B)Both printed newspapers with antislavery messages in the North. C)Both used their houses as Underground Railroad stations and risked their ...
*April 20, 2015*

**History**

@Ms.Sue please help
*April 20, 2015*

**History **

How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? Both lived in Boston and were Underground Railroad conductors. Both printed newspapers with antislavery messages in the North. Both used their houses as Underground Railroad stations and risked their lives for ...
*April 20, 2015*

**math**

Gabriel walked 100m around the perimeter playground.How long and how wide could the play ground be? give three different answers.
*April 19, 2015*

**Chemistry**

The heat of fusion of a metal is 5.53 J/g at its freezing (melting) point of 559◦F. How much of this solid metal (already at 559◦F) can be melted if 3382 J of energy are available? Answer in units of g. I don't know how to set up the problem
*April 14, 2015*

**calculus**

A 15-ft ladder rests against a vertical wall. If the top of the ladder slides down the wall at a rate of 0.33 ft/sec, how fast, in ft/sec, is the bottom of the ladder sliding away from the wall, at the instant when the bottom of the ladder is 9 ft from the wall? Answer with 2 ...
*April 13, 2015*

**calculus**

The area A = πr2 of a circular water ripple changes with the radius. At what rate does the area change with respect to the radius when r = 4ft?
*April 13, 2015*

**calculus**

The height of a cylinder with a fixed radius of 4 cm is increasing at the rate of 2 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 14cm.
*April 13, 2015*

**English**

A IS THE ANSWER
*April 7, 2015*

**physics**

60 cubic feet of air at 30 PSIG and 50 degrees F is compressed to 80 PSIG and 110 degrees F. What is the final volume?
*April 2, 2015*

**physics**

A hydraulic cylinder has to overcome a force of 12,600 pounds on the extend stroke and 9,375 pounds on the return stroke. The maximum system pressure available is 2200 PSIG. What is the smallest diameter cylinder required to overcome the load and what is the maximum diameter ...
*April 1, 2015*

**fluids**

An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?
*April 1, 2015*

**fluids**

A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?
*April 1, 2015*

**fluids**

What are the three benefits of a fluid system as the prime mover in a system? Explain each benefit.
*April 1, 2015*

**physics**

A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?
*April 1, 2015*

**physics**

. An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?
*April 1, 2015*

**fluids**

. A nut is frozen on a shaft and it will take a minimum 190 foot pounds to break it free. How long a cheater (extension) will a 120 pound person need to put on to an adjustable wrench with a 6inch handle?
*March 31, 2015*

**fluids**

60 cubic feet of air at 30 PSIG and 50 degrees F is compressed to 80 PSIG and 110 degrees F. What is the final volume?
*March 31, 2015*

**fluids**

A man unloads a truck that has 25 15 pound cinder blocks to a pallet 12 feet away. A. How much work has he done?B. How much power if he finished in 8 minutes?C. How much HP was exerted?
*March 31, 2015*

**history**

@Ms.Sue Please check
*March 25, 2015*

**history **

which of the following was an effect of the assembly line? A) it made workers want to return farms B) it made clothing more expensive to produce C) it increased demands for worker compensation D) it drove down the cost of clothing production Who introduced the idea of ...
*March 25, 2015*

**History**

@Ms.Sue please check
*March 24, 2015*

**History**

1. How did new England's textile industry affect both children and women? a) It allowed them to earn a living wage until the age of 25. b) It gave them opportunities not available on family farms. c) It permitted them to complete their schooling. d) It provided long-term ...
*March 24, 2015*

**Physics**

Mass m1 = 0.5 kg moves with constant velocity v1i = 2.5 m/s along the x-axis and collides with mass m2 = 2.6 kg, which moves with velocity v2i = 3.1 m/s, as sketched below(completely vertical). After the collision, m1 and m2 stick together. a.) Find the angle, θ, between ...
*March 24, 2015*

**L.A**

It is C. I just took a test for an online school I attend. It gave me the answers after I submitted the test. It is C.
*March 24, 2015*

**chemistry**

what is the strongest intermolecular force in nitrogen trifluoride
*March 20, 2015*

**phy**

Which of the following is NOT true? evaporation occurs at any temperature of a liquid boiling takes place only at the surface of the liquid evaporation occurs only at the surface of a liquid boiling of a liquid takes place at a definite temperature and pressure
*March 18, 2015*

**phy**

Calculate the change in internal energy of 2kg of water at 90 degree celcius when it is changed to $3.30m^{3}$ of steam at $100 ^{o}$C. The whole process occurs at atmospheric pressure. The latent heat of vaporization of water is $2.26\times10^{6}$ J/kg.
*March 18, 2015*

**Algebra 2 (DIVIDEPOLYNOMIALS)**

How do you divide this polynomial using long division? (6x^3-17x^2-104x-60) divide by (2x+5)
*March 18, 2015*

**Physics**

A mover pushes a 60 lb box 30 ft along a level floor at constant speed with a force directed 45 degrees below the horizontal. If the coefficient of kinetic friction is 0.20, how much work does the mover do on the box? ...Is this one of those trick questions where the work is 0?
*March 11, 2015*

**Business Math**

Ned’s Sheds purchases building materials from Timbertown Lumber for $3700 with terms of 4/10, 2/15, n/30. The invoice is dated October 17. a) List the time periods, as well as the payment and percent discount for each period. b) On November 1, a partial payment of $2000 ...
*March 8, 2015*

**math**

067degree
*March 2, 2015*

**Math **

What is the combined height of 3 nickels, 2 nickles, and 1 nickle
*February 25, 2015*

**Math**

How many times larger is the area of a square (Length of Sides = A) than the area of an equilateral triangle (Length of Sides = 0.5A)?
*February 21, 2015*

**physics**

If a person weighs 700N on Earth, what force due to gravity would they exert on a 1500kg car they are standing 1.5m from? Assume the distance is between their centres of mass. F=Gm1xm2/r^2?
*February 20, 2015*

**Ap calc**

Use the method of cylindrical shells to find the volume V of the solid obtained by rotating the region bounded by the given curves about the x-axis. x + y = 3, x = 4 − (y − 1)^2
*February 19, 2015*

**AP calc**

Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. y = 8x − x^2, y = 12; about x = 2
*February 19, 2015*

**AP calc**

Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. y = 13 sqr.(x) y = 0, x = 1; about x = −3
*February 19, 2015*

**Science**

1.Infrared radiation has wavelengths ranging from about 800 nm to 1 mm. What is the frequency of radiation of wavelength 970 nm? Answer in units of s−1 . 2.Microwaves, such as those used for radar and to heat food in a microwave oven, have wavelengths greater than about ...
*February 12, 2015*

**math**

Use the line graph to solve. What was the difference in water levels between Week 2 and Week 4? A. 10 m B. 1 m C. 0.10 m D. 0.01 m the water kecvers is 5.3 and 5.4
*February 6, 2015*

**Physics**

In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. Suppose a small boat is at the crest of this wave, 1.8m above the equilibrium position.What will be the vertical position of the boat 3.0s later?
*January 22, 2015*

**math**

divide
*December 7, 2014*

**economics**

Which of the following is most likely to be purchased in the factor market? You will choose two answers for this question. Shampoo and dog food Cement and copper wire Opera tickets and sushi Automobiles and deodorant Dirt and timber I know that dirt and timber is one of the ...
*December 4, 2014*

**math **

write the following square root in the form a root b . where a and b are integers and b has the least value possiable. 3 root 7?
*November 28, 2014*

**math **

find a value for x so that 28/12 = -7/x x=?
*November 25, 2014*

**math**

the number of professors in a collage is P and the number of students is S and there are 15 times as many students as professors. write the answer as an algerbra equation.
*November 25, 2014*

**Math (trigonometry)**

thank you
*November 23, 2014*

**Math (trigonometry)**

Hi, I need help with these problems, I'm not sure where to start. The book's examples are different. Thanks in advance!! 1.) To find the distance AB across a river, a distance BC of 472m is laid off on one side of the river. It is found that B=108.1 degrees and C= 17.9...
*November 23, 2014*

**Maths**

I did miss a bit. The 10 additional balls were all red.
*November 22, 2014*

**Maths**

In a bag there are a number of red and blue balls. The ratio of red to blue balls is 3:7. I add 10 balls and the ratio goes to 6:7 red to blue balls. How many blue balls are there? 3n + 7n = 10n (3n+10) + 7n = 10n + 10 6n + 7n = 10n + 10 13n = 10n + 10 3n = 10 N = 3.333 7n = ...
*November 22, 2014*

**Chemistry**

typo: *not be correct
*November 16, 2014*

**Chemistry**

Thank you DrBob222, could you possibly elaborate why C or D could be correct? (I initially thought C, but I'm not so sure now.)
*November 16, 2014*

**Chemistry**

Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG&...
*November 16, 2014*

**math**

sales tax is 8.2 percent find the sales taxes on a purchase of 273.00.
*November 14, 2014*