Wednesday

May 4, 2016
Total # Posts: 655

**Chemistry**

Solution of formic acid (HCOOH) with a pH of 1.98. Find the molarity of the acid.
*April 26, 2016*

**math**

find the area of rhombus if each side measures 5 cm and the shorter diagonal is 6 cm.
*April 6, 2016*

**math**

if the quotient of some number and two is six less than twice that same number, find that number
*March 7, 2016*

**Math**

A rectangular container 30cm by 20cm by 15cm was completely filled with water. The water was poured into another container which measured 25cm by 20cm by 28cm. What was the height of the second container?
*January 25, 2016*

**Calculus**

At time t (in days), the size S of a population of butterflies is given by the formula s= 600/1+49(0.6)^t. When does the maximum growth rate occur?
*December 3, 2015*

**Comm Tech**

is not 4 people i just got 75 percent because i got one wrong and that wa this one the answer is B ) 2
*December 1, 2015*

**Physics**

Consider the 608 N weight held by two cables shown below. The left-hand cable had ten- sion T2 and makes an angle of 44◦ with the ceiling. The right-hand cable had tension T1 and makes an angle of 42◦ with the ceiling. a) What is the tension in the cable labeled T1...
*November 17, 2015*

**Program planning**

Developmentally appropriate curriculum A. teaches children about development. B. provides easy activities. C. allows children to choose the structure for their own experiences. D. requires children to learn academic content.
*November 4, 2015*

**math **

Country A has a growth rate of 2.1% per year. The population is currently 5,747,000 and the land area of Country A is 36,000,000,000 square yards. Assuming this growth rate continues and is exponential, after how long will there be one person for every square yard of land.This...
*July 5, 2015*

**MATH**

Is it possible for the graph of a polynomial function to have no y-intercept? No x-intercept?
*July 3, 2015*

**math**

How is the range of a polynomial function related to the degree of the polynomial?
*July 3, 2015*

**math**

solve 4^(x+2)=2^x
*July 2, 2015*

**math **

If you get mixed nuts with cashews that cost $6.25 lb. and if you get mixed nuts with peanuts @ $2.30 lb. But if I just want 1/2 lb. of mixed nuts for $1.70 how much of each would be included? How many lbs. of cashews and how many lbs of peanuts.
*July 2, 2015*

**math**

is it 0.139 of the cashews
*July 2, 2015*

**math**

How many lbs of cashew and how many of lbs.peanuts
*July 2, 2015*

**math**

If you get mixed nuts with cashews that cost $6.25 lb. and if you get mixed nuts with peanuts @ $2.30 lb. But if I just want 1/2 lb. of mixed nuts for $1.70 how much of each would be included?
*July 2, 2015*

**civics**

Ms. Sue?
*June 1, 2015*

**civics**

are you sure Ms. Sue?
*May 30, 2015*

**Math**

The table shows the actual retail market share of passenger cards from Ford Motor Company as a percentage of the U.S. market. Year Market Share 1975 23.6% 1980 17.2% 1985 18.8% 1990 20.0% 1995 20.7% A mathematical model for this date is given by f(x) = 0.04x^2 - 0.8x + 22 ...
*May 4, 2015*

**Math**

Show that log base b [(x + (sqrt x^2-5))/5] is equal to -log base b (x-(sqrt x^2-5))
*March 18, 2015*

**earth**

When earth is seen from outer space,it looks mainly blue. This is because most of the earth is covered with.
*March 14, 2015*

**pre calcuclus**

find the first five terms of {2n/3 n+1} a1=-2 an+3an-1?
*March 9, 2015*

**chemistry**

If 1500 mg of rubbing alcohol is spilled in abox that measures 4m x 2m x 3m, what is the concentration of alcohol in mg. per cubic meter if it evaporates into gas?
*January 29, 2015*

**history**

Despite the fact that smaller states were worried about being controlled by larger states and larger states wanted representation based on population, the 13 states were able to develop and adopt a constitution. Describe how they did so.
*December 8, 2014*

**Algebra**

Find the values of a, b, and c such that the equation y=ax^2+bx+c has ordered pair solutions (-3,-22), (-1,2) and (3,2) a = 2; b = 8; d = 4 a = -2; b = 4; c = 8 a = 2; b = 4; c = 8 a = -2; b = 8; c = 4
*November 23, 2014*

**Chemistry**

What would be the problem with determining a IR spectrum on a liquid whose boiling point is 30 degrees celcius
*October 19, 2014*

**Organic Chemistry**

Aqueous sodium bicarbonate was used to wash the crude t-pently chloride. What was the purpose of the wash? give equations.
*October 12, 2014*

**finding the interest**

Cesar purchased a room air conditioner for $450 and made a a down payment of $90 and financed the rest over 20 months. If the monthly payment was $22.80, what was the interest?
*October 5, 2014*

**math/help please**

I need heelp
*September 28, 2014*

**Math**

An airplane took off and reached an altitude of 10,000ft in 20min. How many ft per min, on average, did the airplane climb?
*September 17, 2014*

**Science!**

its C i did it and got that one correct
*September 16, 2014*

**Interest**

Mariah purchased a room air conditioner for $450 and made a a down payment of $45 and financed the rest over 14 months. If the monthly payment was $30.28, what was the interest?
*September 14, 2014*

**Math - full question**

Julia purchased a new sofa for $1300 and made a 15% down payment and financed the rest over 12 months. The store charged 11% interest on the amount financed. Find the down payment $ Find the amount financed: $ Find the interest paid: $ Find the monthly payment $
*September 10, 2014*

**What is P?**

Adrianna want to set aside some money for a vacation in 3 years. How much does Adrianna need to set aside today in order to have $8600 in 3 years if it is invested at 5% compounded annually. I am so confused!! Thanks for all your help!!
*September 2, 2014*

**compounded annually**

Adrianna want to set aside some money for a vacation in 3 years. How much does Adrianna need to set aside today in order to have $8600 in 3 years if it is invested at 5% compounded annually. I am so confused!! Thanks for all your help!!
*August 31, 2014*

**Math Compounded daily**

$1450 was invested by Karla at 12% for 1 years compounded daily. How much did Karla have at the end of the investment?
*August 31, 2014*

**Interest Rate**

Devin borrowed $8500 for 7 years. If the interest was $4165, the interest rate is
*August 31, 2014*

**Ordinary Interest**

A loan of $2500 is taken on March 15 and repaid September 15th. The interest rate for the loan was 17.75%. Find the interest using ordinary time and ordinary interest
*August 31, 2014*

**Ordinary Interest**

Find the ordinary interest on a loan of $1500 at 14% for 4 months.
*August 27, 2014*

**5th grade math**

What is the estimate for the product of 289 and7
*August 25, 2014*

**percent markup**

If the markup is $6 on a pair of jeans which cost $22, what is the percent markup based on selling price?
*August 21, 2014*

**math**

If an item that sells for $81.00 has a 50.0% markup on cost, what is the cost?
*August 18, 2014*

**Cost**

If an item that sells for $81.00 has a 50.0% markup on cost, what is the cost?
*August 18, 2014*

**vocabulary-suffixes**

What does the suffix mean in the word logical?Please,please help!!!!!
*July 29, 2014*

**HEALTH**

What is an example of having a poor diet?
*July 21, 2014*

**math 200 statistics**

ADHD a researcher studying ADHD among teenagers obtains a simple random sample of 100 teenagers aged 13 to 17 and asks them whether or not they have ever been prescribed medication for ADHD. To say that the distribution of sample proportion (P cap), the sample proportion of ...
*July 11, 2014*

**chemistry**

Please Help!what will happen if 50mL of 0.022M Na2S2O3, 50mL of 0.010M AgNO3 and 50mL of 0.097m KCl are mixed together? for AgCl, ksp=1.8x10^-10, for Ag(S2O3)2^3-, Kf =2.9x10^13. !
*April 23, 2014*

**Math**

Y-2/24 = -5/4
*February 20, 2014*

**physics**

In a certain right triangle, the two sides that are perpendicular to each other are 3.80 m and 8.10 m long. What is the length of the third side of the triangle?
*January 24, 2014*

**English**

Need help revising this paragraph Some folks don’t mind lots of clutter scattered around the house. Others can’t stand that idea. Even doing dishes can be a point of contention. One roommate might see nothing wrong with placing dirty dishes in the sink and leaving ...
*December 6, 2013*

**Physics **

A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball traveling at 6.25 m/s ...
*November 14, 2013*

**Math**

Multiplying to make 50 it said ways to multiply with two factors:
*October 15, 2013*

**Chemistry**

You mix 200.0 mL of 0.350 M HCl with a 300.0 mL solution of 0.100 M Ba(OH)2. Calculate the concentration of each ion remaining in the solution after the reaction has reached completion.
*September 25, 2013*

**physics**

A 1.54 ×104 N boat experiences a force of 2 000 N from east by the ocean tide and a wind force against its sails with magnitude of 4000 N directed toward the northwest (60° N of W). Find the magnitude and the direction of the resultant acceleration
*September 18, 2013*

** 9th grade Geography **

how were natural resources important in shaping the Midwest's industries?
*August 21, 2013*

**Critical Thinking **

What assumptionss should you be aware of to ensure that they did not interfere with crital analysis.
*July 30, 2013*

**chem**

yes we did.. so the answer is the same? i dont know how to work it out. Thanks
*July 17, 2013*

**chem**

yes we did.. so the answer is the same? i dont know how to work it out. Thanks
*July 17, 2013*

**chem**

no typeo dr bob... the question reads.. 0.788g/cc
*July 17, 2013*

**Chem**

Fingernail polish is mainly acetone (C3H6O) and has a density of 0.788gcc. A. HOW MANY GRAMS OF ACETONE ARE IN A O.5L BOTTLE B HOW MANY MOLECULES OF ACETONE ARE IN THAT SAME BOTTLE
*July 17, 2013*

**math**

a plumber has 12 1/2 feet of plastic pipe he uses 3 2/8 feet for the sink line and 5 3/4 feet for the washing machine . he needs approximately 3 1/2 feet for a disposal. does he have enough pipe left for a disposal?
*July 10, 2013*

**math**

(3/2)(1/3+ 1) (2+7/4)(7/4)(7/4) ---> / that stands for a fraction
*July 10, 2013*

**math**

thank you
*July 10, 2013*

**math**

I think 14
*July 10, 2013*

**math**

-56 + 14(5)
*July 10, 2013*

**math**

-56+14= -42
*July 10, 2013*

**math**

a group of hikers begin their expedition at the grand canyon at an elevation of 56 feet below sea level at 5:00 am .if they climb 14 vertical feet up each hour until 10:00 am ,what is their new elevation ?
*July 10, 2013*

**math**

the temperature in the desert can drop as much as 40'f from noon to midnight .At noon on july 31st the temperature in sahara desert is 3'f .If th temperature drps 39'f by midnight , what is the temperature at midnight ?
*July 10, 2013*

**math**

MS.powell has -$25 in her checking account after withdrawing money from the atm .How much did Ms.Powell withdraw if she had $85 in her checking account before she withdraw the money?
*July 10, 2013*

**math**

nemo is swimming 47 feet below sea level . he ascends 16 feet in the water . what is nemos current position ?
*July 10, 2013*

**Statistics**

A department store is running a promo one Saturday by giving out coupons for $10 of free merchandise. However, one-third of customers spend $40, and one-third spend$75. The remainder of customers who come in the store do not take advantage of the promo at all. A) find expected...
*June 30, 2013*

**Math**

My 30 year mortgage loan is $255,413 with a monthly payment of $1,321.33 at 6%. There are only 8 years remaining. what is the payoff?
*June 17, 2013*

**Calculus**

A rancher wants to build a rectangular pen with an area of 150 m^2? a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen dimensions that require the minimum amount of fencing. Width = ...
*May 29, 2013*

**Calculus**

A rancher wants to build a rectangular pen with an area of 150 m^2? a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen dimensions that require the minimum amount of fencing. Width = ...
*May 29, 2013*

**Chemistry**

Let's say that you are asked to design an airbag for a car. You know that the bag should be filled with gas with a pressure higher than atmospheric pressure, say 828 mmHg at a temperature of 22.0 C . THe bag has a volume of 45.51. What quantity of sodium azide should be ...
*May 28, 2013*

**Calculus**

can you show me the steps for b. pls
*April 26, 2013*

**Calculus**

find an equation of the tanegent line to the curve 3xsquared + 5ysquared=8 at the point (1,1)
*April 20, 2013*

**Chemistry**

Write a net ionic equation to show that quinoline, C9H7N, behaves as a Bronsted-Lowry base in water.
*April 17, 2013*

**Computer Science**

A memory in 64bit architecture has size 1,024Mbytes (note that 1,024 = 2^10). 1)How many 64-bit words is its capacity? How much is this capacity in bits? How much is the same capacity in bytes? 2)How many cells does this memory have? If we want to be able to reference every ...
*April 10, 2013*

**physics**

A train accelarates uniformly in a straight line at 0.3m/s^2 from rest. Calculate the velocity 15 seconds after its departure. Calculate time taken to reach 30km/h and calculate Distance covered by the train
*April 7, 2013*

**science**

A train accelerates uniformly in a straight line at 0.3m/s from from rest. Calculate the velocity 15 seconds after its depature. Calculate the time taken to reach 30km/h and the distance covered by the train.
*April 7, 2013*

**reading**

Has anyone ever read the book tiger rising?
*March 27, 2013*

**social studies!!!**

Thank u!
*March 26, 2013*

**social studies!!!**

Does anyone know ten DIFFERENT physical features of algeria( in africa) !! If anyone can give me them ur aa life saver"!
*March 26, 2013*

**algebra**

volume of cone varies jointly as square of its radius and its height if volume of a cone is 27pie cubic inches when radius is 3 inches and height is 9 inches find volume of a cone when radius is 4 inches and height is 3 inches
*March 12, 2013*

**Math**

Thank you!
*March 6, 2013*

**Math**

Typo. Students.
*March 6, 2013*

**Math**

There are 30 sultry dents in the class. 20% of the students received an A on the last math test. How many students received an A?
*March 6, 2013*

**science**

The driving pulley of a motorbike rotates at 3 r/s and has a diameter of 300mm. The pulley exerts an effective force of 2000N at a point on its periphery. Calculate the turning moment and the power in Kw .
*March 6, 2013*

**physics**

A vehicle with a mass of 2 tons travels on a horizontal road at a speed of 126km/h.The driver notices a donkey at the side of the road and decides to reduce speed. The brakes are applied and the vehicle slows down to 72km/h after 5 seconds. Calculate the distance travelled ...
*March 6, 2013*

**physics**

How do you convert 126km/h to m/s
*March 6, 2013*

**physics**

A vehicle with a mass of 2 tons travels on a horizontal road at a speed of 126km/h.The driver notices a donkey at the side of the road and decides to reduce speed. The brakes are applied and the vehicle slows down to 72km/h after 5 seconds. Calculate the acceleration of the ...
*March 6, 2013*

**social studies!!!**

What does question 7s answer mean???
*March 4, 2013*

**social studies!!!**

Hannah i tryed that before and it didnt work. Thank u damon!!!
*March 4, 2013*

**social studies!!!**

I left my textbook in my locker...again. sorry If u can find me a website to help me...great...if u can answer them...even better!! 1. Would shipping be easier to block in the gibralter or bosporus strait? Why? 2.what countries rely on the strait of hormuz to ship their oil? 3...
*March 4, 2013*

**CHEMISTRY HELP!**

Calculate [Cu2+] in a 0.10 M CuSO4 (aq) solution that is also 6.4 M in free NH3 . Cu2+(aq) + 4NH3(aq) --->[Cu(NH3)4]2+ (aq) kf = 1.1 x 10^13
*March 2, 2013*

**english**

Write a paragraph naming three possible agendas and one example of each that you might find in the media.
*February 21, 2013*

**math**

1/3 =
*February 19, 2013*

**Math**

Referring to the experiment of rolling two fair dice, let A be the event that the total is less than eight and let B be the event that the total is even. Draw a Venn diagram corresponding to this experiment and events A & B (using probabilities). 1
*February 14, 2013*