Saturday

October 1, 2016
Total # Posts: 2,343

**Pre-Calc**

A radioactive isotope has a half life of 8.1 days. If the sample starts with 25 grams, how much will there be after 90 days?

*November 3, 2014*

**Math Please Check**

Please tell me if this are right. Thank you! Find the exact location of all the relative and absolute extrema? h(t) = t^3 - 3t^2 domain: [-1, + infinity) For this one I got x=2 as the minimum, and x=0 as the maximum. g(t) = 3t^4 - 16t^3 + 24t^2 +1 domain: (-infinity, +infinity...

*October 30, 2014*

**Math**

Marginal revenue the weekly revenue from the sale of emeralds at Eduardo’s Emerald Emporium (EEE) is decreasing at a rate of $500 per $1 increase in price and the price is decreasing at a rate of $0.45 per additional emerald sold. What is the marginal revenue? I am not ...

*October 21, 2014*

**chemistry**

Twenty grams of aluminum metal at 83.2 C were mixed with 49.3 g of water at 19.7 C. Assuming no heat loss, what was the final temperature of the Aluminum water metal? specific heat for Al= 0.215 specific heat for H2O=1.00

*October 15, 2014*

**Statistics**

the assets (in billions of dollars) of the four wealthiest people in a particular country are 39, 32, 11, 10. assume that samples of size n = 2 are randomly selected with replacement from this population of four values

*October 10, 2014*

**Math **

find three consecutive positive odd integers such that the sum of the squares of the first and second integers is equal to the square of the third integer minus 7?

*October 9, 2014*

**Math (please check)**

Compute the indicated derivative. d/dt [ ( t^2 + t^0.5 ) ( t^0.5 - t^-0.5 ) ] |t=1 I took the f and g prime then I used the quotient rule my final answer came out to 3t^1.5 - 1.5t^0.5 + t + 0.5t^-1 then I plugged 1 in for t and got 5.196 Please let me know if this is right, if...

*October 9, 2014*

**probability;math**

A card is chosen at random from a deck of 52 cards It is then replaced and then a second card is chosen.What is the probability of choosing a jack and then an eight?

*October 5, 2014*

**chemistry, biotechnology**

The question is: "The molar extinction coefficient of pure antibody is 1.4 absorbance units per milligram antibody @280nm. You have a concentrated antibody solution, so you make a 5-fold dilution and measure @280, getting an absorbance of 0.845. What is the concentration ...

*October 2, 2014*

**science, chemistry, biotechnology**

"You're creating a standard curve for pyruvate. You need to create a standard with 20 micromoles in a cuvette. How much 100 mM pyruvate would you need?" My understanding is to solve for VOLUME using the equation: micromoles = (mM)(volume in ml) 20 micromoles = (...

*October 1, 2014*

**math**

Mr snider is tiling a floor .The floor is 16 tiles long and 5 toles wide.How many tiles are in the border section?

*September 29, 2014*

**math**

The Hernandez family Is going to the beach. They buy sun block for $9.99, 5 snacks for $1.89 each, and 3 beach toys for $1.49 each. Before they leave, they fill up the car with 13.1 gallons of gasoline at a cost of $3.70 per gallon

*September 29, 2014*

**home economics**

Job oportunities

*September 27, 2014*

**CHM 300**

Experiment: Redox titration;determination of ascorbic acid by an iodometric back-titration Why is sodium carbonate added to the thiosulfate solution ? why is the water used for preparing the thiosulfate solution boiled ?

*September 26, 2014*

**algerbra **

I need some help please 7/10 / 1/8+4/5*1/2

*September 23, 2014*

**Math**

5/8-x+x+1/2-x+1/8=1 -x and +x cancel 5/8+1/2+1/8-x lcm 5+4+1 - x= /8 10/8-x=1 10/8-1=x Lcm 10-8 /8=x 2/8=x.

*September 20, 2014*

**understanding motion science**

it takes a runner 10 seconds to run 100 yards. the runners speed is ?

*September 2, 2014*

**Criminal Justice Ethics**

Moral Vices

*September 1, 2014*

**medical billing and coding**

a 12 year old boy presents with his father to er due to open wounds to his arm, hand, and upper leg. the injury occurred when the boy fell on a barbed-wire fence at farm while running in the field. Diagnosis: multiple lacerations to the right forearm, right hand, and left ...

*August 30, 2014*

**Voabulary**

How can we hope to a city that is surrounded by such strong walls and has ample supplies of everything it needs?

*August 21, 2014*

**english**

in general on what stage of the writing process should you spend most of your time a. analyzing your audience b .writing your first draft c prewriting d.revising your material

*August 13, 2014*

**penn foster paralegal**

i need help with the following i need the info to be for OHIO LAWS Participants Sally Bright asked her husband, John, to move out temporarily due to marital difficulties. After a brief separation, Sally filed for divorce and received temporary custody of their 14-year-old ...

*August 4, 2014*

**math**

Five points lie in the same plane with no three points on the same line. A circle can be drawn through any three of the five points. What is the total number of different circle that can be drawn such that each circle passes through three of the five points?

*July 25, 2014*

**Algebra **

You are walking away from home at a constant velocity of 5 km per hour. The first landmark you see is your favorite fountain which happens to be 2 km from your house. Which of the following sequences describes the distances you cover at internals of one hour starting when you ...

*July 15, 2014*

**Geometry**

I need a little more explanation please maybe step by step and the answer

*July 10, 2014*

**statistics**

how much sale tax in due for a payment of 993.91

*July 1, 2014*

**math-Ms Sue please help**

Thanks...that's what I got

*June 24, 2014*

**math-Ms Sue please help**

What is the monthly payment on a 25-year loan of $73,700 if the annual interest rate is 10%?

*June 24, 2014*

**English**

Oh okay, strike my answer:(

*June 24, 2014*

**English**

Shouldn't it say, If you want to feel well rested? Am I wrong?

*June 24, 2014*

**math**

What is the monthly payment on a 25-year loan of $73,700 if the annual interest rate is 10%?

*June 24, 2014*

**math**

ok, thanks anyway

*June 24, 2014*

**math-help please Ms Sue**

I need help on this one please

*June 24, 2014*

**math**

A farmer buys a new tractor for $38,000. He makes a down payment of $10,000 and finances the balance at 8.5% APR over 48 months. Before making the 12th payment, the farmer decides to pay the remaining balance on the loan. How much interest will the farmer save (use the ...

*June 24, 2014*

**math**

A newlywed couple bought a washer and dryer for $800. They paid 5% down and then paid 12 monthly payments of $65.41. Determine the APR of the loan to the nearest tenth of a percent.

*June 24, 2014*

**math**

Thanks...I got it now:) It took me several hours and with a little help from my husband I understand it better.

*June 24, 2014*

**math**

A carpenter spent $4500 to purchase a table saw , a circular saw, and a panel saw. He paid 5% down and financed the balance with a 30-month fixed installment loan with an APR of 5.0%. Determine the total finance charge and monthly payment for the loan.

*June 24, 2014*

**math**

thanks...I got it!

*June 24, 2014*

**math**

James has set up an ordinary annuity to save for his retirement in 18 years. If his monthly payments are $225 and the annuity has an annual interest rate of 8% compounded monthly, what will be the value of the annuity when he retires?

*June 24, 2014*

**math**

Thank you:)

*June 24, 2014*

**math**

Barbara knows that she will need to buy a new car in 3 years. The car will cost $15,000 by then. How much should she invest now at 8%, compounded quarterly, so that she will have enough to buy a new car?

*June 24, 2014*

**math**

Thanks:)

*June 24, 2014*

**math-help**

I got $674.10

*June 24, 2014*

**math**

John Lee's savings account has a balance of $4494. After 3 years, what will the amount of interest be at 5% compounded semiannually?

*June 24, 2014*

**math**

thank you!

*June 24, 2014*

**math**

4800/9=533.33x5%=266.665 4800+240=5040.00

*June 24, 2014*

**math-help **

I think the answer is $5040.00

*June 24, 2014*

**math**

Allan borrowed $4800 from his father to buy a car. He repaid him after 9 months with interest of 5% per year. Find the total amount he repaid.

*June 24, 2014*

**math**

thank you Ms. Sue

*June 24, 2014*

**math**

All 30 of the students in a mathematics class attended class on Monday. On Tuesday only 22 students attended. What was the percent decrease?

*June 24, 2014*

**Criminal Justice - Policing**

Yes, it is C

*June 24, 2014*

**Science**

Yes, C

*June 24, 2014*

**physics**

A 236 kg block is released at a 4.2 m height as shown. The track is frictionless except for a portion of length 6.2 m . The block travels down the track, hits a spring of force constant k = 1483 N/m . The coefficient of kinetic fric- tion between surface and block over the 6.2...

*June 24, 2014*

**english**

Capitalized name: the name of a specific person or thing, normally beginning with a capital letter and not used with the indefinite article or a modifier, e.g. "York," "Sally," or "Henderson"

*June 23, 2014*

**Criminal Justice - Policing**

Either A or B...I'm thinking A

*June 22, 2014*

**Survey of Mathematics**

Thanks Henry!

*June 22, 2014*

**Survey of Mathematics**

On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...

*June 22, 2014*

**math**

A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?

*June 20, 2014*

**Math**

Sorry:(

*June 20, 2014*

**Urgent! Help please!**

Can you help?

*June 20, 2014*

**Urgent! Help please!**

On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...

*June 20, 2014*

**Urgent! Please help!**

Can you help?

*June 20, 2014*

**Urgent! Please help!**

A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?

*June 20, 2014*

**Math**

A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.

*June 20, 2014*

**Please help! Urgent**

Can you help?

*June 20, 2014*

**Please help! Urgent**

A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.

*June 20, 2014*

**Survey of mathematics**

On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...

*June 20, 2014*

**health**

40 million

*June 20, 2014*

**finite math**

I got .03%

*June 20, 2014*

**Survey of Mathematics**

Thank you

*June 20, 2014*

**Survey of Mathematics**

A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?

*June 20, 2014*

**Survey of mathematics**

A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.

*June 20, 2014*

**Survey of Mathamtics**

You want to invest $7500 for 15 years. The local bank offers a rate of 6.5% compounded monthly. The local credit union offers a rate of 6.75% compounded semiannually. Which is the better option? How did you arrive at this conclusion?

*June 20, 2014*

**car insurance?**

It is D

*June 20, 2014*

**health**

D. all the above

*June 20, 2014*

**chemistry**

Respiration is considered as an exothermic reaction because in respiration oxidation of glucose takes place which produces large amount of heat energy.

*June 18, 2014*

**Medical**

Yep C, I took Medical Office Admin

*June 17, 2014*

**math**

Becky works 40 hours each week and makes $320. How much does she make per hour? Use a number line to solve this problem. I have a number line is labeled 0-320 but I cant seem to figure this one out.

*June 16, 2014*

**math**

4 times a number added to 7 times the number equals 33

*June 15, 2014*

**Math**

Thanks so much Reiny.

*June 11, 2014*

**Math**

a newspaper carrier has $1.80 in change. He has two more quarters than dimes but three times as many nickels as quarters. How many coins of each type does he have?

*June 11, 2014*

**Math 8th grade**

In(x):2,10,___,__,__,-3,__,___,x Out(y:4,28,13,-17,10,_,2.5,148,3x-2 What's the answer !!!! Help!! ASAP!

*May 29, 2014*

**algebra 1**

if y varies inversely with x' find the constant of variation and write an equation if y=1/2 and x=-10

*May 26, 2014*

**Science**

What is the force that results from a 3,000kg car accelerating at 20.00 m/s2? a;) 150.0 N b;) 3,000 N c;) 3,020 N d;) 60,000 N

*May 19, 2014*

**Algebra**

What are the foci of the hyperbola with equation 16y^2-9x^2=144

*May 19, 2014*

**Finance**

Determine the present values if $5,000 is received in the future (at the end of each indicated time period) in each of the following situations: a. 5% for 10yrs b. 7% for 7yrs c. 9% for 4yrs

*May 10, 2014*

**social studies**

X-2 roller coaster. The first 4th dimension roller coaster in the world.

*May 5, 2014*

**chemistry**

A beaker with 1.40×102mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.10mL of a 0.370M HCl solution to the beaker. How much will the pH change? The pKa of ...

*April 22, 2014*

**chemistry**

How many grams of dry NH4Cl need to be added to 2.00L of a 0.100M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.86? Kb for ammonia is 1.8×10−5.

*April 22, 2014*

**math**

y - 4x = 8 (t- chart)

*April 15, 2014*

**Chemistry**

If 15.0 mL of a 1.5M HCl solution at 22.5 degrees C is mixed with 25.0mL of a 1.5M NaOH solution at 21.5 degrees C that is in a calorimeter, and the final mixed solution temperature ends up at 28.5 degrees C, 1.)what is the balanced equation for this reaction? 2.) what is the ...

*April 13, 2014*

**Physics**

When a compact disk with a 12.0-cm diameter is rotating at 4.2 rad/s, what is (a) the linear speed and (b) the centripetal acceleration of a point on its outer rim?

*April 10, 2014*

**math**

x/4 +2x =1/3

*March 30, 2014*

**algebra**

x - 1 = x + 5 5 15

*March 30, 2014*

**Math**

Four times a number, diminished by 6, yields the same result as twice the same number increased by 4. Find the number.

*March 30, 2014*

**physics**

Assuming the Earth's magnetic field averages about 0.50×10−4 T near Earth's surface, estimate the total energy stored in this field in the first 15km above Earth's surface. The radius of Earth is 6380 km.

*March 23, 2014*

**math help**

I am a closed shape made of 6 line segments. I have 2 angles less than a right angle and no right angles. What shape am I? Draw an example in the workspace.

*March 19, 2014*

**Language Arts**

What is the simple predicate in this sentence? Branches buried in the mud are food for the winter. a. are b. buried c. for I thought it was buried, but when I submitted the answer for a pre-test it said it was wrong and I'm a little confused.

*March 12, 2014*

**physics**

You must show your work for full credit.) Calculate the circular speed of an object that orbits the Sun at a distance of 0.2 AU (1 AU = 1.5e+11 meters, the distance between the Earth and the Sun)

*March 7, 2014*

**Physics**

A pendulum bob with a mass of 0.4 kg is released from a position in which the bob is 20 cm above the low point in its swing. What’s the speed of the bob as it passes through the low point in its swing?

*March 2, 2014*