# Dana

Popular questions and responses by Dana-
## Calculus

Find a formula for the fourth degree polynomial p(x) whose graph is symmetric about the y-axis (meaning it has no odd powers of x), and which has a y-intercept of 10, and global maxima at (3,253) and (−3,253).

*asked on April 7, 2013* -
## chemistry

Calcium carbonate CaCO3 reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s)+2HCl(aq)->CaCl2(aq)+H2O(l)+CO2(g) Tums, an antacid, contains CaCO3. If Tums is added to 35.0 mL of 0.300 M HCl,how many grams of CO2 gas

*asked on October 8, 2010* -
## math

Four accounting majors, two economics majors, and three marketing majors have interviewed for five different positions with a large company. Find the number of different ways that five of these could be hired. One accounting major, one economics major, and

*asked on May 4, 2008* -
## chemistry

Calculate the expansion work done when 50 g of water is electrolysed under constant pressure at 25C

*asked on September 5, 2010* -
## Math

Find the probability for the experiment of tossing a six-sided die twice. Put the answer in a/b form. P(the sum is odd or prime)

*asked on April 28, 2015* -
## english 4

Change the italicized clause to a nominative absolute. Rewrite the entire sentence in the box below. As the hurricane season was over, people returned to the cottages on the beach. Change the italicized clause to a nominative absolute. Rewrite the entire

*asked on November 9, 2014* -
## trig

-Find sin(x+y), cos(x-y), tan(x+y) and the quadrant of x+y sinx=-3/5, cosy=-7/25, x and y in Q3

*asked on November 16, 2011* -
## math

Solve the problem. A shirt company has 4 designs that can be made with short or long sleeves. There are 5 color patterns available. How many different types of shirts are available from this company? a. 9 types b. 40 types c. 11 types d. 20 types

*asked on May 4, 2008* -
## Geometry

The point A (3, 4) is reflected over the line x = 2, and then is reflected over the line x = -4. What are the coordinates of A'? (1, 2) (9, 4) (-9, 4) (1, 4)

*asked on January 23, 2012* -
## Geometry

The measures of 6 of the interior angles of a heptagon are: 120°, 150°, 135°, 170°, 90°, and 125°. What is the measure of the largest exterior angle? 90° 80° 75° 85°

*asked on January 23, 2012* -
## geometry

Answer has to be in exact form. Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.

*asked on January 15, 2012* -
## math

How many distinguishable permutations of letters are possible in the word? BASEBALL a. 20,160 b. 10,080 c. 5040 d. 40,320

*asked on May 4, 2008* -
## physics

A 1000-kg space probe is motionless in space. To start moving, its main engine is fired for 5 seconds during which time it ejects exhaust gases at 5000 m/s. At the end of this process it is moving at 20 m/s. The approx. mass of the ejected gas is??

*asked on October 10, 2010* -
## macroeconomics

Which of the problems in the construction of the CPI might be illustrated by each of the following situations? Substitution Bias, Introduction of New Goods, Unmeasured Quality Change 1. The invention of the iPod 2. The introduction of air bags in cars 3.

*asked on September 11, 2013* -
## financial planning

corp had earnings before taxes of $400,000 and sales of $2,000,000. If it is in the 40% tax bracket its after tax profit margin is?

*asked on July 21, 2012* -
## math

To win the World Series, a baseball team must win 4 games out of a maximum of 7 games. To solve the problem, list the possible arrangements of losses and wins. How many ways are there of winning the World Series in exactly 6 games if the winning team wins

*asked on May 4, 2008* -
## Algebra 1

What is the simplest form of following expression -(8n-5v)

*asked on September 22, 2017* -
## maths

you have eight $1coins and five $2 coins in your pocket. What is the smallest number of coins you need to take out of your pocket to be certain of having atleast one of each coin?

*asked on March 30, 2017* -
## science

which of the following cellular organelles is responsible for realising the energy contained in food

*asked on April 27, 2016* -
## ph science

a flight attendant pulls a wheeled suitcase, applying a 64-N force at a 35 degree angle to horizontal. how much work does she do in pulling the suitcase 45m f=d/t=64+35=99/2x45=2227.5

*asked on April 16, 2016* -
## maths

At the party Jade ate less than four jelly beans. Nicole ate twice as many jelly beans as Jade. Kahlee had twice as many as Nicole. Chris had two more than kahlee. Chris ate ten jelly beans. How many jelly beans were eaten at the party?

*asked on September 18, 2015* -
## math

The arrow is spun several times until it stops at a number 4. Find the probability that this happens on the third spin.

*asked on March 21, 2015* -
## math

A flagpole stands at a right angle to the horizontal at the bottom of a slope. The slope has an incline of 8° with the horizontal. The flagpole casts a 20 meter long shadow up the slope. The angle of elevation of the sun is 17°. Determine the height of

*asked on July 21, 2012* -
## Geometry

The quadrilateral with these following vertices is a parallelogram. (-4, -3), (2, -3), (4, -6), (-4, -6) True False

*asked on January 19, 2012* -
## geometry

the means of a proportion are 4 and 17. List all possible oairs of positive integers that could be the extremes of the proportion

*asked on November 15, 2011* -
## CHEMISTRY

4BF3+3H2O=H3BO3+3HBF4 if the reaction vessel contains 0.496 mol BF3 and 5.63g of H2O, which compound is the limiting reactant? how many molesof HBF4 can be produced?

*asked on April 19, 2011* -
## CHEMISTRY

CALCULATE THE MASS OF Na3PO3 PRODUCED AFTER 28.0g OF H3PO3 IS TREATED WITH 42.0g OF NaOH, AND ALSO CALCULATE THE MASS REMAINING OF THE EXCESS REAGENT. H3PO3+ 3NaOH = Na3PO3+ 3H2O

*asked on April 19, 2011* -
## physics

a .105 kg hockey puck moving at 48 m/s is caught by a 75 kg goalie at rest. With what speed does the slide on the ice?

*asked on January 31, 2011* -
## math

Classify each quadrilateral using the best description

*asked on November 14, 2010* -
## physics

what distance does the electromagnetic radiation travel in 50.0 (nu)s?

*asked on October 20, 2010* -
## physics

a car starting from rest is accelerated at 2m/s(square) for 10s, then moves at constant velocity for 20s and then decelerates at 1m/s(square), finally stops. how far does it travel during its trip? please help me! I need in solution for that problem

*asked on September 4, 2010* -
## Algebra

In a class of 50 students, 29 are Democrats, 11 are business majors, and 5 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing: (a) Democrat who is not a business major. (b) A student

*asked on April 27, 2018* -
## maths

Four girls each caught a fish while at the beach. Teri's was double the size of Jane's. Jane's fish was shorter than Lynn's by nine centimetres. Lynn's was 18 centimetres longer than Reina's who caught a fish 30 centimetres long. How long were Teri's

*asked on September 17, 2015* -
## Chem

List several anions, by formula, that contribute to the salinity of a water sample. Is this the answer? : chloride sulfate sodium , Na bicarbonate carbonate bromide fluoride What does it mean by formula? thanks so much !

*asked on September 9, 2015* -
## Math

θ equals the angle in Quadrant II so that cot θ= -3. Find the values for sin θ, cos θ, and tan θ.

*asked on December 4, 2014* -
## physics

Approximately how far will the people have to travel to move the truck 1.5m if |Truck force is 4500N and people are 1200N?

*asked on November 29, 2011* -
## math

write a cosecant function with a period of 4pi, phase shift of 4 pi, and vertical shift of 8. My answer:csc(theta/2-8pi)-8

*asked on August 10, 2011* -
## chemistry

ASSUME THE FORMULA OF GASOLINE AS C8H18 AND ITS DENSITY IS 0.71g/ml. IF A CAR GETS 26.2mi/gal (1GAL=3.785L), WHAT IS THE MASSOF CO2 PRODUCED IN A TRIP OF 225mi.? ASSUME COMPLETE COMBUSTION OF GASOLINE. C8H18+25/2 O2= 8CO2+ 9H2O

*asked on April 19, 2011* -
## statistics

For a sample with a mean of M=45, a score of x=59 corresponds to z=2.00.What is the sample standard deviation?

*asked on January 31, 2011* -
## Statistics for social sciences

For a population with u=50 and o=8, find the z-score for x=54, x=42, x=62 ,x=48 ,x=52 ,x=34

*asked on January 31, 2011* -
## english

Pronouns used as subjects or subject complements are in the nominative case. True or False

*asked on January 4, 2011* -
## chemistry

Balance the following redox reactions assuming a basic solution. Show all the steps. a. MnO2(s) -> MnO4^-2 + H2 (g) b. H2O2 (aq) + Cl2O7 (g) -> ClO2- (aq) + O2 (g) How can you balance these if for example in part a., there is no H on the left side... can I

*asked on November 1, 2010* -
## english

The face of this admired accomplished American papers on postage stamps coins and paper money of the United States. Can you please help me with correct comma placement?

*asked on September 26, 2010* -
## English

Does a SAT essay require a title?

*asked on May 31, 2009* -
## Physics

Four equal masses of 4.0 kg are placed at the vertices of a square of side 8.0 m. Find the force on the mass at the top left vertex.

*asked on October 17, 2018* -
## Physics

Two alpha particles (helium nuclei) are held in place 1.0 nm apart. Describe the motion of the two nuclei when they are released.

*asked on September 29, 2018* -
## Physics

Two alpha particles (helium nuclei) are held in place 1.0 nm apart (use 120 on for the diameter of a helium atom). Compare the electric and gravitational forces acting between the two nuclei.

*asked on September 29, 2018* -
## math

five people are sharing 1 bottle of juice .What fraction of the bottle of juice will each person receive?

*asked on January 30, 2018* -
## Math

There is 40 baskets for $715 and 400 for $5,935. there is a deivery fee. what is the one - time delivery fee?

*asked on September 27, 2017* -
## literature

How is the concept of cultural encounter treated in the short story “One out of Many”?

*asked on April 23, 2017* -
## business

i need to understand this question , i have to write an essay and i don't understand it .There are as many ways to use information technology in business as there are business activities to be pursued. Human Resource management has many activities that are

*asked on April 21, 2017* -
## Science

What volume of a 2.00 M HCL solution can be prepared by diluting 0.350L of 14.0 M HCl solution?

*asked on December 5, 2016* -
## Chemistry

If a 30.pL tank of laughing gas contains 2.74 moles of N2O at 25 degrees C, what is the pressure (atm) in the tank?

*asked on December 5, 2016* -
## Maths

A blue train is 500m long and is travelling at 58km/h. A yellow train is 400m long and is travelling at 32km/h. The trains are travelling towards each other. Ooriginally, the trains are 900km apart. A) how long will it take for the 2 trains to reach each

*asked on October 4, 2016* -
## Maths

Sally and ben are running around a 400m circular track. Sally can run at 8m/s while ban can run at 6m/s. They start at the same time and run in the same direction. How far are they apart after 5 minutes?

*asked on October 4, 2016* -
## Physics

You're driving parallel to train tracks at 52.0 km/h when a train passes you, going a steady 91.0 km/h. A track crossing is up ahead, so you begin to speed up at 8.00 m/s2. How far do you drive before you pass the train?

*asked on September 21, 2016* -
## Fundamental Chemistry

Given the balanced reaction below; write out the balanced ionic equation and the balanced net ionic equation. Include phase labels and charges where appropriate. Cu(s) + Zn(NO3)2 (aq) → Cu(NO3)2 (aq) + Zn(s)

*asked on April 13, 2016* -
## Maths

A plane is flying at an altitude of 880 m. Sarah is standing on the ground and she observes the angle of elevation to the plane as 67'40'. Twenty-five seconds later the angle of elevation had changed to 24'30'. (a) How far has the plane flown in that time?

*asked on February 5, 2016* -
## english

1. It's raining cats and dogs. 2. Hit the sack. 3. You're bouncing off the walls. What is the inferential meaning of all the 3 idioms?

*asked on November 2, 2015* -
## Finite

One coin is fair and one is weighted so that Pr[H]=211. You randomly select one of the two coins, and flip it 5 times, noting the result of each flip. What is the expected number of heads?

*asked on October 13, 2015* -
## pre algebra

1/4 my answer is 0.25 am i correct?

*asked on August 31, 2015* -
## pre algebra

o.12 my answer is x=3/25 an i correct?

*asked on August 31, 2015* -
## pre algebra

is 0 a whole number, integer, rational, and real number?

*asked on August 31, 2015* -
## pre algebra

is 0.75 a rational numbre?

*asked on August 31, 2015* -
## math

1/4 my answer is 0.25 am i correct?

*asked on August 31, 2015* -
## Math Check

Hi! Can someone check my answers for this question? Thanks!! Directions: Look for the probability for an experiment that deals with the drawing of two marbles (without replacement) from a bag containing one green, two yellow, and three red marbles. Put the

*asked on April 28, 2015* -
## Math Check

Hi! Can someone check my answers for this question? Thanks!! Directions: Look for the probability for an experiment that deals with the drawing of two marbles (without replacement) from a bag containing one green, two yellow, and three red marbles. Put the

*asked on April 28, 2015* -
## math

which sets of ordered pairs represents a linear relationship? if the relationship is linear, calculate the rate of change of the dependent variable. 1. (-2,4),(-1,1),(0,0),(1,1),(2,4),(3,9) 2. (5,13),(6,15),(7,17),(8,19),(9,21),(10,23) 3.

*asked on March 4, 2015* -
## Math

provide a table of six values that represent a linear relation? 6 values mean that 6 number on each side x and y value?

*asked on March 3, 2015* -
## statistics

if you earned a 17 on a quiz what would your score indicate the best performance a. x=15 and s=2.4 b. x=15 and s=2.1 c. x=17 and s=2.4 d. x=17 and s=2.1

*asked on February 15, 2015* -
## statistics

A teacher is interested in finding out how many hours a day a college student at Monroe Community College exercises. The teacher randomly chooses 1000 college students and asks them, “How many hours do you exercise?” Explain whether there could be any

*asked on February 15, 2015* -
## Math

I am a parent and need help with this problem so I can show my daughter how to complete. A recipe calls for 8 cups of flour. The amount of flour is 10 cups less than twice the amount of milk. Write and solve an equation to find the amount of milk in the

*asked on February 1, 2015* -
## math

Lin borrowed $950 for a new laptop. She will pay $25.80 each month for the next 48 months. Find the simple interest rate for her loan. (Rounded to the nearest 10th of a percent.)

*asked on January 22, 2015* -
## math

TJ had a car loan for $5800. Over the course of the loan, he paid a total of $1508 in interest at a rate of 6.5%. Over how many months did TJ pay off the car loan?

*asked on January 22, 2015* -
## chemistry

Gasoline sold in Ontario must contain at least 5.00% v/v ethanol? How much gasoline contains 1.50 L of ethanol? my answer is 22.5 ml is this correct

*asked on December 16, 2014* -
## Calculus

Hi! I need help with this problem: For 0(smaller or equal to) t (smaller or equal to) 9, a particle moves along the x-axis. The velocity of the particle is given by v(t)= (sin pi/4 t). The particle is at position x= -4 when t=0. a) For 0 (smaller or equal

*asked on December 11, 2014* -
## math

Jane had 16m of ribbon. She gave 3 2/7of it to Linda and 4 1/3 to Sarah. How much ribbon was left?

*asked on December 9, 2014* -
## Pleaaaaaase help with differential graph question

Suppose further that the population’s rate of change is governed by the differential equation dP/dt = f(P) where f (P) is the function graphed. For which values of the population P does the population increase? (b) For which values of the population P

*asked on December 1, 2014* -
## Geometry

A carpenter is building a staircase using his knowledge of right angles. The steps have a horizontal landing and a vertical rise causing each step to be a right triangle cut out. Depending on the purpose, steps may be adjusted by the angle of elevation

*asked on October 30, 2014* -
## Algebra, math,

A helicopter can fly 120 mph in still air. When flying to a town 700 miles away and returning the helicopter has to fly with a tailwind of x mph when going to the town and with a head wind of x mph when returning. If the return flight takes 2 hours more

*asked on May 20, 2014* -
## Homework helpline?

Is there a homework helpline for college level I can call and ask homework questions through the phone? I know there is one that is available for elementary school and middle school, and it would seem a little ludicrous for one to be available for this

*asked on April 28, 2014* -
## Business management

television is an attractive advertising medium because it A. Offers mass coverage and flexibility B. is relatively expensive C. offers rapidly growing network audience D. provides instant feedback which can be used to measure effectiveness

*asked on March 20, 2014* -
## math

Three boys are sharing a cake. Joey ate 2/5 of the cake, Billy ate 1/3 of it, and Matt ate the remaining piece. What is the ratio of Joey's piece to Billy's piece to Matt's piece?

*asked on March 14, 2014* -
## Physical Science

a rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 381,000 km?

*asked on September 15, 2013* -
## geometry

Al and Harpreet are racing to Wing Stop to get the last batch of fries made for lunch. Al participates in cross country and can cover (write in value) per minute. Harpreet likes to watch TV and play video games. She is out of shape and can only cover 3

*asked on October 6, 2012* -
## business lowercapstone

Assignment Type: Individual Project Deliverable Length: 4-5 body pages, 1 PERT chart, 1 Gantt chart Points Possible: 185 Due Date: 4/22/2012 11:59:59 PM CT Using your current work organization (or an organization of interest) as the subject matter,

*asked on April 16, 2012* -
## Geometry

The point A (3, 4) is reflected over the line x = 2, and then is reflected over the line x = -4. What are the coordinates of A'? (1, 2) (9, 4) (-9, 4) (1, 4)

*asked on January 23, 2012* -
## Geometry

The point A(-2, 3) is translated using T: (x,y) → (x + 4, y + 2). What is the distance from A to A'? square root 6 2 square root 2 5 2 square root 5

*asked on January 19, 2012* -
## geometry

The coordinate of the midpoint of segment AB is (-3, 2). Find the coordinate of A if the coordinate of B is (0, 2). A = (-6,2) (-3/2,2) (3,2)

*asked on January 16, 2012* -
## geometry

Answer has to be in exact form.Find the area of a segment formed by a chord 8" long in a circle with radius of 8".

*asked on January 15, 2012* -
## Physics

A ferry is crossing a river. The ferry is headed due north with a speed of 2.8 m/s relative to the water and the river’s velocity is 4.9 m/s to the east. a) What is magnitude of the boat’s velocity relative to Earth

*asked on October 17, 2011* -
## Physics

A ferry is crossing a river. The ferry is headed due north with a speed of 2.8 m/s relative to the water and the river’s velocity is 4.9 m/s to the east. a) What is magnitude of the boat’s velocity relative to Earth

*asked on October 17, 2011* -
## algebra

Find a formula that expresses the fact that P(x, y) is a distance 9 from the origin.

*asked on October 3, 2011* -
## math

tan(3arc cos3/4)? =3cos3/4 =cos=4 sqrt17/4 = tan

*asked on August 9, 2011* -
## chemistry

2LiOH + Co2 = Li2CO3 +H2O If a cannister absorbed 100.0g of CO2 from the air that resulted in the production of 148.5g of Li2CO3, what was the percent yeild for Li2CO3.

*asked on April 19, 2011* -
## economics

how would you illustrate the impact of each of the following events on a production possibilities curve for factory goods and farm goods? a.) the computer in invented b.)1 million farm workers remain unemployed for six months c.) a drought

*asked on April 7, 2011* -
## Finance

what would happen if i had a credit card with $2000 dollars on it with an interest rate of 10%.the minimum payment is $50 a month how long would it take to pay off

*asked on April 6, 2011* -
## math

A carpenter can make some chairs and stools. All together there are 32 legs. If the carpenter has pieces of wood that can be used to make 9 seats, how many chairs and how many stools can a carpenter make?

*asked on November 9, 2010* -
## Math

At the end of each quarter, a 50-year-old woman puts $3000 in a retirement account that pays 5% interest compounded quarterly. When she reaches 60, she withdraws the entire amount and places it in a mutual fund that pays 6.9% interest compounded monthly.

*asked on November 7, 2010* -
## chemistry

write the formula of the conjugate acid for base H2PO

*asked on October 17, 2010*