Wednesday

August 20, 2014

August 20, 2014

Total # Posts: 164

**physics**

A snail moved 0.14 m between two cabbages in 3.0 minutes. The average speed of the snail is
*July 31, 2014*

**physics**

A bus traveled 10.0 km from the north end of the city to the south in 10.0 minutes. The average speed of the bus was
*July 31, 2014*

**physics**

Written in scientific notation, with three significant digits, the number 0.01050 is_______?______ x 10?
*July 31, 2014*

**physics**

Initial sources of energy used to operate machines were __________ and __________.
*July 31, 2014*

**physics**

A machine loses 600 kJ as waste heat while producing 5,350 kJ of useful energy output. The efficiency of this machine is
*July 31, 2014*

**Ms. Sue,**

Thank you!
*July 30, 2014*

**world history**

Which of the following statements is true of the Gulf of Tonkin affair? A. Johnson told Congress to pass the Gulf of Tonkin Resolution to let him expand the war. B. Congress was divided and only reluctantly passed the Gulf of Tonkin Resolution. C. The destroyer Maddox was sunk...
*July 30, 2014*

**Accounting **

During its first year of operations, Maria Rose set up Roseland Inc. and invested $25,000 in the corporation. The company earned $68,000 of revenues and incurred $32,000 of expenses. At the end of the year, the company owed $24,000 to its creditors. A cash dividend of $5,000 ...
*July 13, 2014*

**precal help asap**

solutions to the equation tan^2x - 3 = 0 ( there can be more than one) 2pi/3 pi -pi/3 5pi/3
*May 28, 2014*

**PRECAL MULTIPLE CHOICE **

If a triangle ABC has A = 52 degrees, side a = 178, and side b = 234, then what is the measure of B? B= 62.3 or 117.7 B = 62.3 B = 117.7 there is no solution
*May 28, 2014*

**precal help asap**

If a triangle ABC has A = 52 degrees, side a = 178, and side b = 234, then what is the measure of B?
*May 28, 2014*

**Precal, TRUE OR FALSE**

TRUE OR FALSE The motion of a pendulum for which the maximum displacement from equilibrium varies is an example of simple harmonic motion.
*May 28, 2014*

**Precal **

An arc of length 30 meters is formed by a central angle A on a circle of radius 15. The measure of A in degrees (to the nearest minute) is
*May 28, 2014*

**Precal, please help asap!**

How many solutions does a triangle with values a = 42, A = 117 degrees, and b = 34 have
*May 28, 2014*

**Precal, please help asap!**

The angles of elevation theta and alpha to an airplane from the airport control tower and from an observation post 2 miles away are being continuously monitored. If theta is 42 degrees when alpha is 81 degrees, how far is the plane from the observation post?
*May 26, 2014*

**Precal **

A distress flare is shot straight up from a ship’s bridge 75 ft above the water with an initial velocity of 76 ft/sec. a) Write a set of parametric equations for the path of the flare. ______________________________ ______________________________ What window gives you ...
*May 26, 2014*

**Precal**

Can someone please help me with the last 4 questions in this paragraph? Suppose that Tiger hit a golf ball with an initial velocity of 150 ft/sec at an angle of elevation of 30°. Write the parametric equations to represent the flight of the ball. How long is the golf ball ...
*May 26, 2014*

**Physics**

A wheel with a weight of 395N comes off a moving truck and rolls without slipping along a highway. At the bottom of a hill it is rotating at an angular velocity of 23.0rad/s . The radius of the wheel is 0.607m and its moment of inertia about its rotation axis is 0.800 MR2. ...
*April 11, 2014*

**algebra**

What is the first step you should take to solve the following expression: 2 – 16 ÷ 4 × (3 + 2)2 + 1 ? A. 16 ÷ 4 B. 2 – 16 C. 3 + 2 D. 22
*November 15, 2013*

**Algebra**

Remove the parentheses from the following expression, and combine like terms: (2x + 3y – 4z) – (x – y – z) A.3x +4y+5z B. 3x + 4y – 3z C.x +4y–3z D. x + 2y – 5z
*November 15, 2013*

**Medical Billing and Coding**

A. 434.91, 438.21, 438.12, 250.00 305.1, 88.91, 93.39, 93.72
*November 1, 2013*

**Medical Billing and Coding**

B. 434.91, 342.91, 784.59, 250.00, 305.1, 88.91, 93.39, 93.74
*November 1, 2013*

**physics**

9.816
*July 28, 2013*

**Physics**

1c please
*June 15, 2013*

**Chemistry **

What is the concentration of the resulting solution when 250 mL of 0.1 M K3PO4 and 300 ml of 0.5 M K3PO4 are mixed?
*June 10, 2013*

**Statistics**

.0288
*March 22, 2013*

**algebra**

In a class of 50 students, the number of women is 2 more than five times the number of men. How many women are in the class?
*March 19, 2013*

**Physical Science**

The transfer of heat that takes place because of the density difference in fluids is
*March 18, 2013*

**Physics**

An object is thrown vertically upward at 18m/s from a window and hits the ground 1.6s later. What is the height of the window above the ground?(air resistance is negligible)
*December 29, 2012*

**math**

Write two expressions that show that increasing a quantity by 4% is the same as multiplying that quantity by 1.04.
*December 5, 2012*

**Statistics**

10.12
*November 14, 2012*

**Math**

A line has a slope of 6/7 and a y-intercept of -5. Which of the following is the equation of the line? 7x - 6y = -35 7x - 6y = -5 6x - 7y = 35 6x - 7y = -35 I'm honestly not sure with this, I'm thinking that it's 7x - 6y = -5.. Not sure though. Also, could you ...
*October 31, 2012*

**Finance**

Here is a forecast of sales by National Bromide for the first 4 months of 2012 (figures in thousands of dollars): Month: 1 2 3 4 Cash sales 19 28 22 18 Sales-on-crdt 140 160 130 110 On average, 40% of credit sales are paid for in the current month, 20% in the next month, and ...
*October 10, 2012*

**trig**

what is 7pi/3 in degree .13pi/3 in degree
*October 10, 2012*

**Calc**

The region bounded by y=2.5x^2 and y=4x is to be rotated about both axes and the volume generated calculated by both the washer and the shell methods. 1)The volume of the region bounded by y=2.5x^2 and y=4x, when rotated about the x-axis is? 2) The volume of the region bounded...
*September 16, 2012*

**Chem**

Great! Thank you!
*September 12, 2012*

**Chem**

thanks! all i did for a was change 2.4 by converting it in the manner they said, from feet to inches, inches to centimeters. same with 19.3. i changes it from grams to pounds.
*September 12, 2012*

**Chemistry**

actually, thats not the right answer. you end up getting .21 which is wrong for some reason.
*September 11, 2012*

**Chemistry**

thanks. i wanted the actual way to get it, but whatever.
*September 11, 2012*

**Chemistry**

A bug is observed to travel 72 cm in 7.5 seconds. What is the bug's speed in miles per hour?
*September 11, 2012*

**science**

does anyone know?
*September 9, 2012*

**science**

I am thinking a, if they mean adaptive radiation...
*September 9, 2012*

**science**

a. Evolution of human and bat forelimbs was adaptive, but not for whales. b. Humans and bats evolved by natural selection and whales evolved by Lamarckian mechanisms. c. Whales are not properly defined as mammals. d. Natural selection in an aquatic environment resulted in ...
*September 9, 2012*

**science**

Analysis of forelimb anatomy of humans, bats, and whales shows that humans and bats have fairly similar skeletal structures, while whales have diverged considerably in the shapes and proportions of their bones. However, analysis of several genes in these species suggests that ...
*September 9, 2012*

**SCIENCE**

Celsius, grams, liters, and meters, if you mean the metric system
*September 9, 2012*

**math**

2.78 (rounded to the nearest 100th)x 10^3
*September 9, 2012*

**Math**

Any help would be appreciated! What is 38.896/5.1 + 509.15 to the correct number of significant figures? 516.78 What is (154+8446.1)/54 to the correct number of significant figures? 159.261 Thanks!
*September 7, 2012*

**Maths-Trigonometry**

a kite is attached to a string that is 15m long. If the string makes an angle of 26 degrees to the horizontal the height of the kite is.
*July 28, 2012*

**Pre-Calc**

Hello! I'm stuck on how to do this problem and would appreciate some help! Choose a non-zero complex number c for f(z) = z2+ c. Find a complex number v that is in the escape set. Find a complex number w that is in the prisoner set. Graph the first five iterations of both v...
*May 17, 2012*

**Art**

Yes, that makes sense. Thank you!
*May 16, 2012*

**Art**

Well if that is not the answer then it would have to be A because C and D kind of go hand and hand.
*May 16, 2012*

**Art**

Can you help with one more thing? The features of mosaic art include the following EXCEPT: A)background is naturalistic B)figures usually have stiff and stylized gestures C)outlines are made clear and bold D)the overlapping of figures is avoided B
*May 16, 2012*

**Art**

Great! Thank you!
*May 16, 2012*

**Art **

Any help is appreciated! What are Pendentives? A)Free standing pillars B)Semicircular arches C)Octagonal lintels D)Hemispherical dome I'm not sure about this one. They are not A because they were not freestanding. D could be right because I've seen them described in ...
*May 16, 2012*

**History**

The new morals and manners of the 1920s were reflected in A. women's fashion B. the great migration C. the new factory jobs D. Politics Americans responded to the Selective Service Act A. with enthusiasm B. with antiwar riots C. by refusing to register D. by becoming ...
*May 7, 2012*

**Chemistry**

Thank You!
*April 26, 2012*

**Chemistry**

The Kp for the following equilibrium system is 4.31 x 10‒4 at 375°C : N2(g) + 3H2(g) ↔ 2NH3(g). If 0.862 atm of N2 and 0.373 atm of H2 were mixed in a constant-volume flask and heated to 375°C, which of the following would be closest to the equilibrium ...
*April 26, 2012*

**language**

does a type sketch always have to be written negatively? Can one write a type sketch from a positive point of view? Instead of pointing out vices or folly, can one point out good attributes? Thanks
*April 21, 2012*

**math**

The length of A'B is '18.12' For sure it's the right answer.
*February 10, 2012*

**chemistry**

Radioactive materials are often used in biological studies. A radiation biologist studies the rate of decomposition of a certain substance and obtains the following data: Time(days) 0 4.0 8.0 12.0 16.0 Mass (μg) 15.50 10.90 7.67 5.39 3.79 Determine the rate constant in ...
*February 4, 2012*

**math**

juanita planted 2 flower gardens in similar square shapes. what are the measures of all the angles in each garden? explain how you know.
*January 3, 2012*

**business math **

Mel’s Furniture received an invoice dated September 27 for five bedroom sets at $3,000 each. The invoice indicated a trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM. Assuming Mel pays on November 2, what amount would ...
*December 27, 2011*

**Chemistry!!**

Calculate the pH of 10.00 mL of 0.40 mol/L of hydrochloric acid.
*November 26, 2011*

**algebra**

Can u traslate the following into words 3+w 8x 40-p
*October 31, 2011*

**Math - 5th grade**

Hmmmmm u better ask your mom for answers!!!!!!!!!!!! cheat cheat cheat!!! use the easy way out!
*October 30, 2011*

**Science**

20 sec
*October 26, 2011*

**social study**

Suppose the president vetoed a bill passed by Congress. According to the information, which of the following? actions by Congress would most likely ensure that the bill will become? 1) let the veto stand 2) reintroduce the same legislation 3) try to override the veto with a ...
*September 10, 2011*

**Physics**

The net external force on the propeller of a 3.6 kg model airplane is 8.4 N forward. What is the acceleration of the airplane? Answer in units of m/s 2
*September 6, 2011*

**chemistry**

What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) --><-- 4 PCL3(l) Given the following at 200 C P4(s)+ 10 Cl2(g) --><-- 4 PCl5(s) Kc=8.12 PCl3(l)+ Cl2(g) --><-- PCl5(s) Kc=0.771 Answer: 6.7*[10^(-9)] not sure ...
*July 20, 2011*

**chemistry**

What is the pressure change for the reaction below at 25 C in the process of reaching equilibrium if there is initially enough ammonium hydrogen sulfide to reach equilibrium? Kp= 4.0*(10^4) NH3(g)+H2S(g) ---><--- NH4HS(s) Answer: 1.0*[10(-2)] Not sure what to do here; I ...
*July 20, 2011*

**pressure change**

What is the pressure change for the reaction below at 25 C in the process of reaching equilibrium if there is initially enough ammonium hydrogen sulfide to reach equilibrium? Kp= 4.0*(10^4) NH3(g)+H2S(g) ---><--- NH4HS(s) Answer: 1.0*[10(-2)] Not sure what to do here; I ...
*July 20, 2011*

**science****

The relationship of algae, moth, and sloth would be classified as?
*July 11, 2011*

**8th grade algebra: radicals**

Answer to number 3 is wrong. (didn't realise it was x+4 to the power of two thirds. Sorry):
*May 6, 2011*

**8th grade algebra: radicals**

Answer to number 3: 2/3(x+4) = 8 2(x+4) = 24 2x+8 = 24 2x = 16 x = 8
*May 6, 2011*

**Math**

1. 8k=6k-26 2k = -26 k = -13 2. 5/8a +6 = 6/8a 6 = 1/8a 48 = a 3. 3/12n +10 = 8/12n 10 = 5/12n 120 = 5n 24 = n 4. 20 - 2/10d = 3/10d +16 4 = 1/2d 8 = d (I think. You should check.)
*May 6, 2011*

**com/220**

when do you normally find information for topics that interest you? how do you know when sources are reliable.
*April 5, 2011*

**calculus**

f(x)=x^2-3x+1/x^2
*February 17, 2011*

**math**

principal is $750.00 rate is 9 1/2% for 200 days using a 360 day calendar year what's the interest?
*February 16, 2011*

**Nursing**

How many calories can 1L of TPN contain?
*February 12, 2011*

**chemistry**

4900
*January 17, 2011*

**calculus**

The number N of bacteria in a culture is given by the model N=250e^kt where t is the time (in hours). If N=280 when t=10 estimate the time for the population to double in size.
*December 20, 2010*

**Precalc**

The number N of bacteria in a culture is given by the model N=250e^kt where t is the time (in hours). If N=280 when t=10 estimate the time for the population to double in size.
*December 20, 2010*

**Chemistry**

6.2%
*December 15, 2010*

**Chemistry**

Okay I'm doing a lab report, and I need to find the average of two trials. Can someone show me step-by-step how do find the uncertainty for this average: (4.32g+4.17g)/2 =4.25 The values I used and their uncertainties: 4.32g +/- 0.02 4.17g +/- 0.02
*December 2, 2010*

**Chemistry**

Okay I'm doing a lab report, and I need to find the average of two trials. Can someone show me step-by-step how do find the uncertainty for this average: (4.32g+4.17g)/2 =4.25 The values I used and their uncertainties: 4.32g +/- 0.02 4.17g +/- 0.02
*December 2, 2010*

**math**

The mean is calculated with this general formula: mean= (sum of numbers in a set)/(# of numbers) You know that for a set of 36: Mean=27 # of numbers=36 So: 27=(sum of numbers in a set)/36 which can be rearranged as: sum of numbers in a set=27*36 sum of numbers in a set=972 ...
*December 2, 2010*

**math**

Make an equation to help you solve! We know that: Side1=16cm Side2=Side3 Let's name Side1 x, and Side2 and Side3 (Because they are the same) y. Perimeter=Side1+Side2+Side3 Perimeter=x+y+y Perimeter=x+2y Sub in your value for x: P=16+2y Now, we also know that: 2P=(Side1+...
*December 2, 2010*

**math**

Hm, it's not clear as to what it means by 'why', but if you calculate what 3 pencils would cost, and do the math as if you didn't buy those three pencils, the change will be 3.58. So perhaps with 'why' you could say that the cashier forgot to include ...
*December 1, 2010*

**Social Studies**

It does charge for complete articles, but it does have a short brief which is free. For a very general idea of what you are looking for, the Encyclopedia Britannica is fine. Sra's suggestions are very good, though.
*December 1, 2010*

**Social Studies**

A lot of these can't really be 'defined', but a very good website where you can find a general idea of what these things are is the Enyclopaedia Britannica website. I hope this helps (:
*December 1, 2010*

**Chemistry**

I'm not entirely sure what you mean, but after a thorough search through notes I think I might get it... correct me if I'm wrong? I need to use relative uncertainties, and then use the relative uncertainty to find the uncertainty? (I know how to do both of those, I ...
*December 1, 2010*

**Chemistry**

When finding uncertainties in measurements, I know that if you are adding or subtracting, you must add the uncertainties of the two values. But what do I do if I multiply/divide?
*December 1, 2010*

**algebra**

For a, you are given the number of minutes, which is represented by x. Simply substitute your value of x (25) into the equation (y=35+0.8x) to find the value of y, which is the distance of the sports car from Flint. For b, you are given the distance of the sports car from ...
*December 1, 2010*

**spanish**

i need 10 interrogative sentences in spanish talking about being on vacation.
*November 23, 2010*

**Calculus - integration**

Integral of (2x+5sin(x))^2 dx i didnt know how to start this question so i expand the squre first and then did the rest but its wrong and i dont think my method is right. thank you.
*November 2, 2010*

**Calculus - integration**

Thank you so much!!!
*November 1, 2010*

**Calculus - integration**

Q. ¡ò(15^x/3^x) dx i know that the ¡ò(a^x) dx = a^x/lna +c but i dont know how to solve this question. thank you
*November 1, 2010*