Saturday

September 24, 2016
Total # Posts: 212

**math: pre-calculus **

You have 5 grams of carbon-14; whose half-life is 5730 years. a)Write the rule of the function that gives the amount of carbon-14 remaining after x years. b)How much carbon-14 will be left after 4,000 years? c)When will there be just 1 gram left?

*May 8, 2016*

**math: pre-calculus **

Solve the equation. First express your answer in terms of natural logarithms (for instance, z=(2+ln5)/ln3). Then use a calculator to find an approximation for the answer. 3^x+9=2^x.

*May 8, 2016*

**math: pre-calculus **

If current rates of deforestation and fossil fuel consumption continue, then the amount of atmospheric carbon dioxide in parts per million (ppm) will be given by f(x)=375e^0.00609c, where c=0 corresponds to 2000. a)What is the amount of carbon dioxide in 2022? b)In what year ...

*May 8, 2016*

**math: pre-calculus **

Solve the equations. Log(6x-1) = Log(x+1) + log4

*May 8, 2016*

**math: pre-calculus **

Let u=lnx and v=lny. Write the expression ln3√x/2y in terms of u and v. For example, lnx^3y=lnx^3+lny=3lnx +lny= 3u+v.

*May 8, 2016*

**math: pre-calculus **

Write the expression as a single logarithm. Ln(e^3y)+ln(ey)-4

*May 8, 2016*

**math: pre-calculus **

Let u=ln and v=ln y. Write the expression ln(5√(x3√y)) in terms of u and v. for example, lnx^3y = lnx^3+lny = 3lnx+lny = 3u+v

*May 8, 2016*

**math: pre-calculus **

For the log function (h(x)=log(x+3)-8): a) Find the domain. b) Find the asymptotes. c) Find the x-intercepts.

*May 8, 2016*

**math: pre-calculus **

List the transformations that will change the graph of g(x)=lnx into the graph of the given function h(x)=log(x+3)-8 a) Horizontally shift the graph to the right by 3; then vertically shift downward by 8. b) Horizontally shift the graph to the left by 8; then vertically shift ...

*May 8, 2016*

**math: pre-calculus **

Evaluate the expression without using a calculator. Unless stated otherwise, all letters represent positive numbers. e^(ln√x+5)

*May 8, 2016*

**math: pre-calculus **

The Department of Commerce estimated that there were 53 million internet users in the country in 1999 and 90 million in 2002. Find an exponential function that the models the number of Internet users in year x, with x=0 corresponding to 1999.

*May 8, 2016*

**math: pre-calculus **

5. For the log function (h(x)=log(x+3)-8): a) Find the domain. b) Find the asymptotes. c) Find the x-intercepts.

*May 8, 2016*

**Language Arts**

please I need help now

*April 26, 2016*

**Language Arts**

whose attitude toward scrooge is the most severe

*April 26, 2016*

**math HELP**

the graph below was drawn with output on the vertical axis and input on the horzontal axis what does this graph indecate about the relationship between the input and the output

*April 22, 2016*

**math HELP**

you have a savings account that offers an annual simple interest rat of5% you put $350 into the account select the graph showing the total interest you earn after 1,2,3,and 4 years

*April 20, 2016*

**life orientation**

I don't know what to do it

*April 20, 2016*

**math**

yes just answer the question

*April 7, 2016*

**Math**

thanks

*March 29, 2016*

**math**

Joe bought a television for $286.26, including tax. He made a down payment of $20.00 and paid the balance in 6 equal monthly payments. What was Joe's monthly payment for this television?

*February 11, 2016*

**Math**

Mr blackwell tracks sales of ski equipment each week for a month. Complete the table to determine which week had the highest percent of ski euipment sales

*October 29, 2015*

**Pre-Algebra**

The coordinates of quadrilateral VWXY are given below. Find the coordinates of its image after a dilation with the given scale factor. V (6, 2) W (-2, 4) X (-3, -2) Y (3, -5) scale factor of 2

*October 27, 2015*

**Math.**

5. is d

*April 9, 2015*

**Math**

3 lbs and 6 ozs

*April 2, 2015*

**Chemistry **

For the substance SO2F2(g), ΔHºf = -858 kJ mol-1 and the S-F bond, 308.0 kJ mol-1 Determine the average S=O bond energy in SO2F2 in units of kJ. Is my answer right, if so how do I convert this to kJ? x= S=O bond -858= 2(308) + 2(x) -737kJ/mol

*March 29, 2015*

**Florida studies weekly**

How did people write letters before the typewriter was invented?

*March 12, 2015*

**Science**

A B c d A B E A D E 100% good luck

*March 9, 2015*

**physics**

A rocket moves upward, starting from rest with an acceleration of 25.0 m/s2 for 3.77 s. It runs out of fuel at the end of the 3.77 s but does not stop. How high does it rise above the ground I`ve been sick last week, not quite sure where to even start can you give me a formula...

*September 26, 2014*

**english**

Speech

*May 5, 2014*

**English**

I want to write a speech topic traditional africa marriage is an advantage for men only not women

*April 10, 2014*

**statistics**

For each combination of sample size and sample proportion, find the margin of error for the 95% confidence level. (a) n=100 and p-hat=.56 (b) n=400 and p-hat=.56

*April 2, 2014*

**statistics**

An experiment was conducted to determine the abrasion resistance of a new type of automobile paint. Twelve different strips of metal were painted with the new paint. The abrasion resistance of each piece was then tested on a machine. In the sample, the abrasion resistance ...

*April 2, 2014*

**physics**

Simple. The question states that it is a spherical balloon. What is the volume of a sphere? 4/3 x pi x Radius (cube). You already have the radius 0.16m (16 cm). So now volume = 4/3x3.14x0.004096 = 0.01715 cubic meter

*March 26, 2014*

**social stud. quiz --- check my answers!!!**

The answers I just posted are 100% correct but the ones that anonymous put up there are not hard I was not thanks a lot I got 1/10

*February 11, 2014*

**social stud. quiz --- check my answers!!!**

C B A B C D B C A B

*February 11, 2014*

**Science**

a b b c

*November 7, 2013*

**Math**

For what constant value a is the following function continuous at x= -10 ? f(x)= (1/x+1/10)/(x+10) when x is not -10 f(x)= a when x= -10

*September 15, 2013*

**math**

name the lengths of the sides os three rectangles with the perimeters of 12 units. Use only hole numbers

*April 17, 2013*

**social studies**

Anonymous you look up answers to

*March 22, 2013*

**math**

all 4 interior angles of a parallelogram which is not a rectangle are bisected.What shape is always enclosed by the 4 bisectors

*February 10, 2013*

**business**

consider a four year project with the following information: initial fixed asset investment=420,000;staright-line depriciation to zero over the four year life; zero salavage value; price=25; variable cost=16; fixed cost=180,000; quantity sold=75,000 units; tax rate= 34 percent...

*December 2, 2012*

**Correct**

Yes Mrs. Sue you are correct. Nice job guys! :)

*October 25, 2012*

**business**

You want to have $6 million in real dollars in an account when you retire in 40 years. The nominal return on your investment is 13 percent and the inflation rate is 5.1 percent. What real amount must you deposit each year to achieve your goal?

*October 13, 2012*

**business**

You want to have $6 million in real dollars in an account when you retire in 40 years. The nominal return on your investment is 13 percent and the inflation rate is 5.1 percent. What real amount must you deposit each year to achieve your goal?

*October 13, 2012*

**phy**

A stone is thrown upward from the edge of a cliff overlooking the ocean. The initial speed of the stone is 20m/s, and it's thrown up at an angel of 30 degrees with respect to the horizontal. the cliff is 45m above the ocean surface. How long is the stone in flight before ...

*October 12, 2012*

**physics**

a) a car does an emergency stop from 120000m/s in 3s. what was it's deceleration? b) what was the car's average velocity and what was the stopping distance? thank you

*September 19, 2012*

**maths**

whhat is the quadratic formula?

*September 19, 2012*

**phyics**

find the acceleration if the velocity changes from: a) 2m/s to 4m/s in 4s b) 5m/s to 10m/s in 2s c) 100m/s to 120m/s in 5s d) 86m/s to 94m/s in 4s e) 21m/s to 35m/s in 18s thank you!

*September 19, 2012*

**math plz help**

a student earns 3 doller per hour baby sitting if she earned a total of 28.50 how many hours did she baby sit

*February 17, 2012*

**Science**

unscramble the letters rorpsfgnloadeeasi to make a phrase

*December 6, 2011*

**Algebra**

The area of a of trinagle with b and h is a=1/2bh find the area when b=30 and h =38 m

*November 25, 2011*

**medical terminology**

You are asked by the CEO of your hospital to contribute to the annual report. She wants you to write a five-page paper generally describing each of the ten departments in your hospital (Dermatology, Oncology, Gastroenterology, Pulmonary, Cardiology, Endocrinology, Obstetrics ...

*November 12, 2011*

**chemistry**

the combustionof 1.0g of gasoline realises 11kcal of heat (Density of gasoline=0.74g/ml) a)how many megajoules are realised when 1.0 gallon of gasoline burns? b)when a color TV is on for 2 hours 300KJ are used. How long can a color TV runon the energy from 1.0 gallon of ...

*September 26, 2011*

**chemistry**

You diluted a bacterial culture 106, plated out 200 µL and found 38 colonies on the plate. How many bacteria/mL were in the original undiluted culture?

*September 13, 2011*

**chemistry**

You add a pint of STP gas treatment to a 10 gallon fuel tank, and half fill the tank with gas. What is the dilution factor? (Hint: there are 8 pints/gallon)

*September 13, 2011*

**Biology**

1425

*May 16, 2011*

**CALC**

f(x)= −10.4sin(3x)+8.5cos(3x) find max and min on interval ( -0.81, 1.27 )

*April 2, 2011*

**calculus**

i am confused by the bracket.. there is only 1 bracket

*February 25, 2011*

**calculus**

yes, i understand that part but i do not know how to actually solve the problem

*February 25, 2011*

**calculus**

e^(8x^4)

*February 25, 2011*

**calculus**

exp is euler's constant around 2.718.......

*February 25, 2011*

**calculus**

Derivative of: (exp(8x^4))(5x^3+9)^3 ___________________________ (divided by) (22x^2+4x-20)^2

*February 25, 2011*

**third grade hw help**

My third grade is needing help with his science homework please the question is as follow List as many resources as you can that you use during one day? Thanks!

*January 19, 2011*

**Economic**

calculate 250000-375p=15000+212.5p

*November 7, 2010*

**MATH**

The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3 atmospheres, find V when P = 7 atmospheres. Note: Round your answer to the nearest hundredth

*October 12, 2010*

**Geometry**

ok thnx

*September 16, 2010*

**Geometry**

If M is midpoint of line BK, BM = 5x + 9, MK = 3x + 33 then what does x equal. What does BK equal.

*September 16, 2010*

**latin**

Transaltion from Latin to English: Aeneas, dum ex urbe effugit, senem portat. Senex est Anchises, pater Aeneae. Portare Anchisen necesse est quod senex ambulare non potest. Aeneas Anchisen portat; portat Anchisen Penates, deos familiares. Dei Aenean et Anchisen et omnes amicos...

*July 14, 2010*

**medical Terminology **

show a template on how to write a fictitious medical report of about two paragraphs describing a dermatologic condition or disease. Focus the report on the onset, progression, location, and etiology of the condition or disease, and the treatment parameters. All terms must be ...

*July 14, 2010*

**math**

4a -a = A)4 B)3-a C)5a D)4a to the 2 power E) none

*March 23, 2010*

**math**

sorry my name was wrong nicky

*March 23, 2010*

**math**

(1/10 \ 1/2) * 3 + 1/5 for 1/10 \ 1/2 i got 1/5 but i dont know what to do with the rest 1/5 * 3 + 1/2= F)4/5 G)4/15 H)16/25 J)3 2/5 K)none of these what do i do

*March 23, 2010*

**math**

(1/10 \ 1/2) * 3 + 1/5 for 1/10 \ 1/2 i got 1/5 but i dont know what to do with the rest 1/5 * 3 + 1/2= F)4/5 G)4/15 H)16/25 J)3 2/5 K)none of these

*March 23, 2010*

**math **

25% thanks

*March 23, 2010*

**math **

what percent of 12 is 3? i got 0.36% is that the same as 36%

*March 23, 2010*

**math**

49 so it would be E as in none right

*March 23, 2010*

**math**

70% of 70 is A)1 B)10 C)1000 D)100 E)none i got 100

*March 23, 2010*

**math**

2 8\2 ____ 2

*March 23, 2010*

**math**

5 over 9 + 4 over 9 + 2 over 9 = i got 1 and 3 over 9

*March 23, 2010*

**math**

no its a Fraction 11 over 27

*March 23, 2010*

**math**

5 4 2 - + - + - 9 9 9 F) 11 -- 27 G) 2 1 - 9 H) 1 1 - 9 j) 2 - 9 K)none of these i got 11 3 -- or 1 - 9 9

*March 23, 2010*

**math**

25 so its a is it that easy,thanks

*March 23, 2010*

**math**

13+[22-(7+3)] i got 16 A)25 B)21 C)31 D)47 E)none of these

*March 23, 2010*

**language mechanics**

what Writeacher suggested i dont know what you mean by that

*March 23, 2010*

**MATHS**

I am less than 500. I am divisible by 11 and 5. I have three digits. The sum of my digits is 14

*March 21, 2010*

**sicence**

Select all of the answers that apply. A map _____. 1)is a representation of the earth's surface 2)is a portable document describing an area 3)can provide data such as migration trends, directions, and rock composition 4)provides all of the information about a location

*March 18, 2010*

**Geography**

What impact did the dissolution of the Union of Soviet Socialist Republics have? A)affected nations throughout the world B)decreased conflict in eastern Europe C)increased communism throughout the world D)none its B right

*March 10, 2010*

**geography**

thanks again haha

*March 10, 2010*

**geography**

so it would be C then right

*March 10, 2010*

**geography**

no.right

*March 10, 2010*

**geography**

Members of which economic alliance can live, work, even vote in any member nation? A)NAFTA B)OAU C)EU D)ASEAN i think its A or C am i right

*March 10, 2010*

**geography**

thank you this is not like my english class i kind of know this but thanks a lot

*March 10, 2010*

**geography**

Employment opportunities for more than five hundred people will be lost when New Development Solutions, Inc., closes its headquarters in the city of Nowhere, USA. What are effects that the closing of New Development is likely to have on Nowhere? 1)Service industries will close...

*March 10, 2010*

**geography**

lol thanks i was wondering that,i was almost sure that it was

*March 10, 2010*

**geography**

Culture is seldom a factor in world conflict. A)True B)False i think its false

*March 10, 2010*

**Geography **

what a bout 4

*March 10, 2010*

**Geography **

Employment opportunities for more than five hundred people will be lost when New Development Solutions, Inc., closes its headquarters in the city of Nowhere, USA. What are effects that the closing of New Development is likely to have on Nowhere? 1)Service industries will close...

*March 10, 2010*

**geography**

so its a that what i was thinken thanks

*March 10, 2010*

**geography**

Members of which economic alliance can live, work, even vote in any member nation? A)NAFTA B)OAU C)EU D)ASEAN i really dont know this one maybe a but im very unsure

*March 10, 2010*

**Geography **

I'm guessing country.that's all it gives me

*March 10, 2010*