# Posts by ann

Total # Posts: 1,457

**maroeconomics**

GDP=330 Government spending increases by 30 Investment increases by 10 Net Exports decreases by 15 MPC=.2 What is the new equilibrium GDP?

*July 1, 2015*

**Differential Equation**

Find the area of the triangle with the following vertices (0,2,2), (8,8,-2) and (9,12, 16)

*June 23, 2015*

**COLLEGE MATH**

a manufacture of brand A jeans has daily production costs of C =0.2x^2 -96x+12,095 where C is the total cost in dollars and x is the number of jeans produced. How many jeans should be produced each day in order to minimize costs? what is the minimum daily cost .

*June 7, 2015*

**algebra Please help**

.A toy rocket is shot vertically into the air from a launching pad 5 feel above the ground with an initial velocity of 72 feet per second. The height h, in feet, of the rocket above the ground as t seconds after launch is given by the function h(t)=-16t^2+72t+5. How long will ...

*June 2, 2015*

**algebra**

add equation (5x^8 -5z^4+5z^2+3)+(3z^6+4 z^4-9z) simplify answer to sum

*May 29, 2015*

**Finance301**

Suppose your bank account will be worth $15,000.00 in one year. The interest rate (Discounted Rate) that the bank pays is 7%. What is the present value of your bank account today? What would the present value of the account be if the discount rate is only 4%?

*May 20, 2015*

**math help please**

What is the perimeter of a computer graphic with sides measuring? 2√18, 2√32, 2√50, and 3√12 centimeters The perimeter is _______ centimeters.

*May 18, 2015*

**algebra**

The distance D , in miles to the horizon from an obsever's point of view over water or flat earth is given below , where H is the height of the point of view in feet . if a person whose eyes are 5ft above ground level is standing at the top of hill 45 ft above 'flat&...

*May 16, 2015*

**Math**

Jerome claims he can find the area of the composite shape shown by inscribing it in a rectangle and subtracting. Kelly claims that to find the area you need to use addition. Who is correct? Justify your answer.The picture looks like a 2 sided pointed pencil with 6 sides. The ...

*May 16, 2015*

**algebra**

5+ 3/5 ________ 2- 4/7 simplify

*May 15, 2015*

**algebra**

Thank you Ms, sue

*May 15, 2015*

**algebra**

in a recent year a single person could expect to pay 4160 in income taxes on an adjusted gross income of 26,000. how much more tax should the person expect to pay if her adjusted gross income increased by 4,000 knowing that this would not move her into the higher tax bracket.

*May 15, 2015*

**algebra**

The intensity I of light bulb measured in watts per square meter (w/m^2), varies inversely as the square of the distance d from the light bulb . . suppose I is 45 w/m^2 when the distance is 5 m . find the intensity when the distance from the light bulb is 7 m away

*May 15, 2015*

**algebra**

A private plane traveled from Seattle to the rugged wilderness at a average speed of 176 mph. on the return trip the average speed was 308 mph. if the total traveling time was 5 hours. How far is Seattle to the wilderness? please help

*May 14, 2015*

**algebra please help**

9x3+7x2y+5xy2+7y3 find the product of the polynomials

*April 30, 2015*

**Chemistry**

The two chemical equations with the concentration amounts are as listed on the problem. That's what I was trying to figure out normally I can solve if only given one set of concentrations but I don't have a clue as to what to do now that I am given a mother set

*April 26, 2015*

**Chemistry**

I need help, I don't know how to approach this question The free energy generated by ion movement in the cell is used by the cell to do work. Compute the minimum number of millimoles of sodium that would be needed to pump one millimole of calcium ions if the following ...

*April 26, 2015*

**Science**

Johnny left a glass of milk on his bedside table for a week, and it spoiled. At the end of the week, the glass contained a yellow liquid with lumpy white chunks, and there was a terrible odor. What can be concluded? a) The milk has undergone a physical change. b) The mass of ...

*April 16, 2015*

**Algebra**

Find an angle with a positive measure and an angle negative measure that are coterminal with each angle. 1. 370 degrees 2. -3π /4 3. 5 π/2 pi sign = π

*April 14, 2015*

**Algebra**

A tennis player's swing moves along the path of an arc. If the radius of the arc's circle is 4 feet and the power and the angle of rotation is 100 degrees, what is the length of the arc?

*April 11, 2015*

**statistics**

63% of men consider themselves baseball fans. You randomly select 10 and ask if he consider him self a baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly 8, (b) at least (8) less than (8)

*March 30, 2015*

**Chemistry**

a gas is placed in a 3.56L flask at 1.00 atm pressure. If the volume of the flask is reduced by half, what is the new pressure? V-3.56 P-1.00 I don't know what formula to use and how to apply it.

*March 29, 2015*

**math!! HELP PLEASE**

how?

*March 25, 2015*

**math!! HELP PLEASE**

please help!!! 19. Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with ...

*March 25, 2015*

**math**

ACTUALLY i don't know if its 17.. I really need help working this out!!

*March 25, 2015*

**math**

19. Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use ...

*March 25, 2015*

**Math**

Thank you. sorry to bother you again but I had another problem like this. How do I change something to a percent? if I was using 360 degrees. How would I change a number to a percent so i can create a pie graph

*March 16, 2015*

**Math**

I mean B!!

*March 16, 2015*

**Math**

Thank you so much. I think it's C

*March 16, 2015*

**Math**

Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...

*March 16, 2015*

**Health last questions.**

thanks so much!!!

*March 11, 2015*

**Health last questions.**

I was confused for a second when you said "immunity is not white blood cells." I meant to say A.. sorry

*March 11, 2015*

**Health last questions.**

Physical lines of defense include A. skin, cielia, and mucous membranes *** B. hair C. nails D. teeth When a doctor feels for lymph nodes, he is checking for A. inflammation *** B. shrinking C. pain D. sensitivity Your body can get antibodies from A. immunizations *** B. being...

*March 11, 2015*

**health!**

Oh it's True. Are my others answers right? Thank you by the way

*March 11, 2015*

**health!**

True or False. Washing your hands can help protect you from dangerous pathogens True True or False. People die from colds each year True True or False. Infectious diseases are caused by organisms or viruses that enter and multiply within the human body. True True or False. ...

*March 11, 2015*

**Art last question for today.**

Thank you.

*March 9, 2015*

**Art last question for today.**

What does a production designer create that is similar to an architects blueprint for construction A. a map to navigate the movie sets B. cartoons that detail each individual scene C. sketches of set designers to guide construction D. architectural drawings for set ...

*March 9, 2015*

**Art**

Oh sorry I was thinking about the props designer and the graphic designer! And I won't post this question again.

*March 9, 2015*

**Art**

Is it B then?.

*March 9, 2015*

**Art**

Movie professionals such as props desginers and graphic designers work together to create a believable film. Which method of creating a believable screenplay is unique to the job of a screenwriter. A. research of time period architecture and design B. research of time period ...

*March 9, 2015*

**chem**

I have no idea where to start with this one... Calculate the concentration (M) of sodium ions in a solution made by diluting 40.0ml of a 0.474m solution of sodium sulfide to a total volume of 300ml

*March 8, 2015*

**english**

paul was sad when the football burst

*March 7, 2015*

**Algebra**

Joel has twice as many CDs as Mariella has. subtracting seven from the number of CDs Joel has an dividing by three equals the number of CDs Blake has. If Blake has 25 CDs how many CDs does mariella have?

*March 5, 2015*

**L.A**

Okay thank you both for the help and sorry for the confusion I actually get it

*March 2, 2015*

**math(5th grade)**

If 1/2 of the choir are boys, and 1/4 of the boys are fifth graders, then (1/2) x (1/4) = 1/8 of the choir are fifth grade boys

*February 26, 2015*

**Science please help**

Which of the following types of pathogens can only reproduce itself if it takes over host cells? A fungi B bacteria C virus *** D protozoa am i right?

*February 23, 2015*

**Math**

A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 46 ft. Round to the nearest tenth, if necessary. 30 ft3 40 ft3 60 ft3 120 ft3 can someone please help me. I'm having trouble working this out.

*February 23, 2015*

**Algebra**

The current of a river moves at 3 miles per hour. It takes a boat 3 hours to travel 12 miles upstream, against the current, and return the same distance traveling downstream, with the current. What is the boats rate in still water?

*February 23, 2015*

**Algebra 2**

Solve the equation log2(x^2-20) - log2X =3 the two is the base*

*February 22, 2015*

**art last question**

the onion-shaped domes on St. Basil's cathedral may remind Russians of what part of their culture heritage ? A. that their religion originated in the Middle East B. That their religion emphasized unity C. that their religion originated in Russia D. that their religion ...

*February 22, 2015*

**Art**

how could and observer distinguish the home of a rich inca from a regular citizen A. home of the wealthy were made with wood. B. homes of the wealthy had no trapezoid shapes. C. homes of the wealthy had stone roofs. D. Homes of the wealthy had no mortar i think its c or d am i...

*February 22, 2015*

**Health**

ahhh I get it thanks so much

*February 19, 2015*

**Health**

Is it C then?

*February 19, 2015*

**Health**

after neglecting to look before diving into the pool, your friend hits his head on a rock and disrupts his __________ causing him to be paralyzed from his waist down A. cardiovascular system*** B. circulatory system C. nervous system D. endocrine system Please check

*February 19, 2015*

**Geometry**

A secant and a tangent to a circle intersect in a 42 degree angle. The two arcs of the circle intercepted by the secant and tangent have measures in a 7:3 ratio. Find the measure of the third arc. If someone could help me figure out how to do the equations, then that would be ...

*February 11, 2015*

**Geometry**

I know I got the x = 2 -8 correct so I don't understand how you got x = -3±5 or where the 9 came from.

*February 1, 2015*

**Geometry**

Solve each equation below by completing the square: 1) x^2 + 6x = 16 My steps: x^2 + 6x - 16 = 0 (x - 2 )(x + 8) x = 2, -8 I set it to zero and factored it out. But my teacher said not do it that way and do it by dividing by 2 but I don't understand how that works. I got ...

*February 1, 2015*

**math123**

what is the scientific notation of 0.000089956?

*January 27, 2015*

**Psychology**

If science depends on observation of empirical data, how can social scientists study nonobservable phenomena, such as thought patterns or imagery?

*January 16, 2015*

**science**

How much latent heat is needed to completely melt 368 gram ice cube?

*January 14, 2015*

**Maths**

I purchased a product that was listed at RM 2000. If a chain discount of 10%, 5% and a 2% were given and a chain discount of 5% was also given for prompt payment, what was the net price that I paid?

*January 4, 2015*

**ALGEBRA**

if a product that had a cost of rm2000 was sold with a markup percentage of 80% based on retail price, what was the retail price?

*January 3, 2015*

**Math**

Is rotating the point L(4,4) 90° ABOUT THE ORIGIN THE SAME AS REFLECTING THE POINT OVER THE X-AXIS? EXPLAIN. I get that the rule is counter clockwise and you rotate x and y and then change the value of the 1st sign.. becomes -y,x but i don't know how to answer the ...

*December 28, 2014*

**MATH**

a person has 56 brownies to package for bake sale. the brownies will be sold in packs of 3. how many brownies will NOT BE PACKAGED? CHOICES 3, 5, 4, 9

*December 16, 2014*

**statistics**

The scores for math test #3 were normally distributed. If 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students scored above an 85%?

*December 10, 2014*

**Basic Statistics**

The math grades on the final exam varied greatly. Using the scores below, how many scores were within one standard deviation of the mean? How many scores were within two standard deviations of the mean? 99 34 86 57 73 85 91 93 46 96 88 79 68 85 89

*December 9, 2014*

**Biology**

If 320 F2 offspring resulted from this F1 cross, how many would be green?

*December 6, 2014*

**Chemistry**

E=hv E=energy h= Planck's constant =6.626 x 10^-34 v= frequency 1. What is the energy of light having a frequency of 2.28 x 10^12? ( I do have an answer for this but I'm not so sure about it.) 2.What is the energy of light with a wavelength of 2.18 x 10^-5? 3. A photon...

*December 3, 2014*

**English**

What kind of character trait best describes this? Someone who blames someone else for causing their love one's death, they constantly blame them and believe that they are the reason why that person died and they cause their love one to die but they had no actual proof but ...

*December 3, 2014*

**maths**

April has 3 pounds of trail mix. She puts equal of amounts in each of 8 bags. How much trail mix is in each bag?

*November 30, 2014*

**math**

a vertical flagpole casts a shadow of 12ft long at the same time that a nearby vertical past 8ft casts a shadow 3ft long. Find the height of the pole

*November 22, 2014*

**Science Help**

If your question is which one is renewable, then it is corn.

*November 21, 2014*

**Physics**

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7s have elapsed, it has rotated through an angle of 20 radians. What is the angular acceleration of the wheel? What is the angular velocity when the time t = 8.7 s? I got the answer...

*November 21, 2014*

**Physics**

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7s have elapsed, it has rotated through an angle of 20 radians. What is the angular acceleration of the wheel? What is the angular velocity when the time t = 8.7 s? I got the answer...

*November 21, 2014*

**Physics**

α = 1.00 rad/s2

*November 21, 2014*

**Physics**

An iron disk has a radius of 0.625 m and a mass of 217 kg. The disk is mounted on its axis so that it is free to spin. How much force is required if the force is applied at a distance 19.5 cm from the axis of rotation?

*November 21, 2014*

**Physics**

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7 s have elapsed, it has rotated through an angle of 20 radians. I found that the angular velocity at 8.7 s is 4.60 rad/s. What is the angular acceleration of the wheel? What is the...

*November 21, 2014*

**Physics**

A clock has a second hand whose tip rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the second hand is 0.0020 N and the length of the hand is 9.5 cm, what is the minimum torque that must be applied to the second hand ...

*November 21, 2014*

**Physics**

A 30-caliber rifle with a mass of 3.54 kg fires a 7.33- g bullet with a speed of 596 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder that fires the bullet? (Note there is a tolerance 0.1 percent for the answer)

*November 21, 2014*

**Physics**

A distant planet has a mass of 0.6400 ME and a radius of 0.9000 RE. What is the ratio of the escape speed from this planet to the escape speed from the earth?

*November 21, 2014*

**Physics**

A 30-caliber rifle with a mass of 3.54 kg fires a 7.33- g bullet with a speed of 596 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder that fires the bullet? (Note there is a tolerance 0.1 percent for the answer)

*November 20, 2014*

**Physics**

A distant planet has a mass of 0.6400 ME and a radius of 0.9000 RE. What is the ratio of the escape speed from this planet to the escape speed from the earth?

*November 20, 2014*

**College Algebra**

graph linear equation Y=1/2x-3 and -x+2y=-6

*November 11, 2014*

**Physics test review**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the initial velocity of ...

*November 8, 2014*

**statistics**

Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information that you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you ...

*November 5, 2014*

**Technology for Biobased Products**

QA.A bio-PDO production process will also produce microbial biomass. A huge surplus biomass of roughly 10% of the PDO mass should be expected. A good use of this microbial biomass could be food of feed. Which organism properties disqualify their use in food/feed production ...

*November 4, 2014*

**math**

the windshield on an automobile is inclined 42.5 degrees with respect to the horizontal. assuming that the windshield is flat and rectangular, what is its area if it is 1.50m wide and the bottom is 0.48m in front of the top?

*November 3, 2014*

**algebra**

Write a word problem about collecting: 5 + 6x = 21 + 4x

*October 30, 2014*

**algebra**

Julie and two friends babysat for 5 hours yesterday. They divided their total earnings equally. Julie spent $8 from her part of the money and had $11 left. What was the total amount the three friends earned?

*October 30, 2014*

**physics**

John's mass is 86 kg, and Barbara's is 55 kg. He is standing on the x axis at xj = +9.0 m, while she is standing on the x axis at xb = +2.0 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?

*October 29, 2014*

**Dudas**

John's mass is 86 kg, and Barbara's is 55 kg. He is standing on the x axis at xj = +9.0 m, while she is standing on the x axis at xb = +2.0 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?

*October 29, 2014*

**thermochemical equation:**

Given the following thermochemical equation: NO2 (g) + O2 (g) → NO (g) + O3 (g) ΔH = - 212 kJ Which has more enthalpy, the reactants NO2 (g) + O2 (g), or the products NO(g) + O3 (g) ? The reactants have more enthalpy. The products have more enthalpy. The reactants ...

*October 29, 2014*

**math**

Identify the solution of the system of equations if any -2x-4y=1 , 12y=-6x-3 is this no solution or (o,-1) (-1,0) or infinitelt many solution

*October 28, 2014*

**physics**

A toy car in the figure below runs off the edge of a table that is h = 1.150 m high. The car lands d = 0.410 m from the base of the table.

*October 27, 2014*

**physics**

what are the dimensions of power?

*October 15, 2014*

**Physic**

A 1/2 inch diameter piston moves 10 inches when 30 Lbs of force is applied how far will it move a 6 inch diamter piston and how much weight will this piston lift.

*October 13, 2014*

**Physics**

A highway curve with a radius of 800 m is banked properly for a car traveling 100 km/h. If a 1620- kg Porshe 928S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid?

*October 6, 2014*

**Physics**

During 0.19 s, a wheel rotates through an angle of 2.42 rad as a point on the periphery of the wheel moves with a constant speed of 2.88 m/s. What is the radius of the wheel?

*October 6, 2014*

**math**

Max had 4/5 bag of trail mix. He divided the trail mix equally amoung 5 friends. What fraction of the full bag of trail mix did each friend receive?

*October 5, 2014*

**math**

Leah picked 2.6 pounds of blackberries. Ashlyn picked 1.8 times as many pounds of blackberries. How many pounds of blackberries did Ashlyn pick?

*October 5, 2014*