# Catherine

Popular questions and responses by Catherine-
## Algebra

Dale invested his savings in two investment funds. The $12,000 that he invested in Fund A returned a 1% profit. The amount that he invested in Fund B returned a 6% profit. How much did he invest in Fund B, if both funds together returned a 3% profit?

*asked on March 20, 2017* -
## Calculus (pleas help!!!)

Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the parameterization

*asked on April 15, 2011* -
## Physics

An Alaskan rescue plane drops a package of emergency rations to a stranded party of explorers. The plane is traveling horizontally at 40.0 m/s at a height of 100 m above the ground. a) How far horizontally from the dropping point does the package strike

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

A trough is 9 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x4 from x=−1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by

*asked on January 29, 2015* -
## Calculus (urgent!!)

A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the

*asked on April 15, 2011* -
## math

in greatest to least what is 0.1 0.125 and 0.12? i cant figure it out i think you need to convert to fractions im just not sure.

*asked on February 22, 2016* -
## Maths

if the bearing of N from M is 500 , what is the bearing of M to N?

*asked on June 9, 2019* -
## Calculus

Given a power function of the form f(x)=ax^n, with f'(3) = 14 and f'(6) = 28, find n and a.

*asked on October 8, 2013* -
## Calculus II

Suppose a cell of volume V cc is surrounded by a homogeneous chemical solution of concentration C g/cc. Let y denote the concentration of the solute inside the cell at any time t and suppose that, initially, the concentration is y0. Fick's law, named after

*asked on October 7, 2017* -
## chemistry

A common laboratory system to study Boyle's law uses a gas trapped in a syringe. The pressure in the system is changed by adding or removing identical weights on the plunger. The original gs volume is 50.0 ml when two weights are present. Predict the new

*asked on March 16, 2010* -
## Calculus II

Assume that the rate of change of the unit price of a commodity is propirtional to the difference between the demand and the supply, so that dp/dt = k(D-S) where k is a constant of proportionality. Suppose that D = 72-5p, S = 9 + 2P, and p(0) = 2. Find a

*asked on October 6, 2017* -
## english

What does this poem mean? (tone, mood, and rhyme scheme) At the Un-National Monument Along the Canadian Border William Stafford This is the field where the battle did not happen, where the unknown soldier did not die. This is the field where grass joined

*asked on May 17, 2012* -
## Basic Algebra

solve. Cx+Hy=M, for x

*asked on July 12, 2011* -
## English

How many adjectives are in this sentence? That glossy, red apple rolled out of the grocery bag and across the smooth table.

*asked on January 27, 2011* -
## Math

Which is a better deal - a 10-inch round pizza or a 9-inch square pizza?

*asked on May 19, 2010* -
## Chemistry

What is the product of the following reaction: Mn(s) + Cu(NO3)2 -> I just want to make sure if it's Mn+2 + Cu(s) or if there's no reaction...

*asked on February 25, 2011* -
## Art

Hi- I have to do an Art analysis on 'Diamond Dust Shoes' by Andy Warhol, and am a bit stuck on the part "what do you think the artist was trying to say?" I am in yr 8, and was wondering if anyone had any suggestions :) Thank you!

*asked on February 21, 2011* -
## Physics

If the fundamental frequency of an 70 cm long guitar string is 470 Hz, what is the speed of the traveling waves?

*asked on February 17, 2014* -
## Business 101

1. Carmen Santiago works for a number of businesses as a “consultant.” She has helped design accounting systems, provided accounting services, and analyzed the financial strength of her clients’ businesses. Carmen is working as a A. public

*asked on November 17, 2013* -
## Basic Algebra

A new cruise ship line has just launched 3 new ships: the Pacific Paradise, The caribbean paradise, and the mediterranean paradise. The carribean paradise has 32 more deluxe stateroooms than the pacific paradise. The Mediterranean paradise has 37 few

*asked on July 16, 2011* -
## physics

If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time?

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

A man standing 20 m from a tower estimates the angle of elavation of the top and bottom of a flagpole on the tower as 58 degrees and 55 degrees. Calculate the height of the flagpole. How would I go about finding the height of the flagpole? Calculate the

*asked on June 2, 2007* -
## science

an arrow is fired directly horizontal off a cliff that is 10.0 meters tall with a velocity of 65.5 m/san arrow is fired directly horizontal off a cliff that is 10.0 meters tall with a velocity of 65.5 m/s. How long is the arrow in the air?

*asked on February 2, 2015* -
## math

This is a floor plan of a building that is 8m tall. It has a flat roof. What is the surface area of the building including the roof. The floor plan is starting from the left the side is 18m the bottom is 27m the right side is 22m. The top looks weird

*asked on September 15, 2014* -
## Chemistry

Calculate the concentration of bromocresol green (BG) indicator It says that Molar absorptivity = Absorbance at a wavelength/ concentration of BG indicator I am having trouble calculating the concentration of BG. Other info: Stock solution of BG = 80.0

*asked on April 25, 2013* -
## physics

The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the springs attached to the axles. Each of the identical springs attached to the front axle supports 294 kg. A person pushes down on the

*asked on October 17, 2012* -
## Math

Ramsay is standing 2906 ft away from the base of the Empire State building that is 1453 ft tall. What is the angle of elevation when she looks at the top of the building? Round to the nearest hundredth.

*asked on July 15, 2012* -
## Calculus

Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).

*asked on September 14, 2011* -
## Physics (please help)

A planet is in circular orbit about a remote star, far from any other object in the universe. Which of the following statements is true? a. None of the other statements are true. b. There is only one force acting on the planet. c. There are two forces

*asked on April 30, 2011* -
## English-CHECK PLEASE

Ok, I figured this out (I think) but can you please check? Don't worry. I can carry the tent all by myself because it is so light. I do not even need a lantern it is so light outside. In these sentences, the word "light" is used as a: A:homophone

*asked on April 15, 2011* -
## Math-CHECK PLEASE

Which of the statements is ALWAYS TRUE? A-A right triangle is a scalene triangle. B-An equilateral triangle is an isosceles triangle. C-An isosceles triangle is an obtuse triangle. D-A right triangle is an acute triangle. I got either A or D. I don't know.

*asked on March 8, 2011* -
## physics

A string is tightly stretched between the point A-G at point C it's lightly pinch and point B it's plucked, at points DEF are light folded tissue paper the segments A to BB to CC to DD to E and EG are all equal in length, what happen to the tissue paper

*asked on February 21, 2011* -
## Art

what is the meaning of "Tango C.1918-24" of Elie Nadelman? why did he make it? I need some information for that work. Please help me!!!

*asked on November 7, 2010* -
## roman numerals

1}The Romen numeral M represents: a.50 b.100 c.500 d.1000 2}The Roman numeral XLIX is written in Arabic numerals as: a.54 b.69 c.44 d.49

*asked on April 1, 2010* -
## chemistry

a 500.0 mL gas sample at STP is compressed to a volume of 300.0 ml and the temperature is increased to 35.0 C. What is the new pressure of the gas in pascals?

*asked on March 16, 2010* -
## Math

To make a profit, the prices of the items sold in a furniture store are marked up pieces each item is put on a sale at a discount of 10% Design an algorithm to find the selling price of an item sold at the furniture store. What information do you need find

*asked on March 6, 2020* -
## Chemistry

What concentration of Ag+ is in equilibrium with 3.0×10−6 M Co(CN)3−6 and Ag3Co(CN)6(s)? Ag3Co(CN)6 --> 3Ag^+3 + Co(CN)6 ^-3 I worked the problem as such: Ksp= 3.9*10^-26 3.9*10^-26= [3x]^3 * [x] 3.9*10^-26= [3x]^3 * [3.0*10^-6] Divided both sides by

*asked on January 17, 2020* -
## Life Orientation

Identify and explain five recommendations to address teenage pregnancy

*asked on August 10, 2019* -
## Math

A small country consists of seven states; there are 189 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown, State A: 1283 State B: 2374 State C: 2725 State D: 2155 State E: 1592 State F:

*asked on March 27, 2017* -
## Math

Use the Hamilton method of Apportionment to make the assignment. In a recent census, Iowa's population in thousands was 4,503, Illinois' was 8,220, and Indiana's was 5,300. Allocate 31 members of the U.S. House of representatives to these three states.

*asked on March 27, 2017* -
## Chemestry

A 5.000g sample of a dry mixture of potassium hydroxide, potassium carboate and potassium chloride is reacted with 0.100 L of 2.00-molar HCl solution. A 249.0 mL sample of dry carbon dioxide gas, measured at 22.0 degree Celsius and 740.0 torr, is obtained

*asked on May 13, 2016* -
## Chemistry

If you reacted 100.0 g of carbon tetrachloride (CCl4) with excess antimony fluoride (SbF3), how many grams of carbon dichloride difluoride would be produced?

*asked on December 11, 2015* -
## Physics - Please Check Answers ASAP

Please check these over and see if any are incorrect? 1. The units of speed are: a) m/s ---> my answer b) m/s^2 and direction c) N d) m/s and direction 2. Which of Newton's Laws says you cannot touch anything without being touched? a) 4th b) 2nd c) 1st d)

*asked on October 25, 2015* -
## math

at the video store where you work the dvd cases are 5/8 of an inch wide. New shelf units are available that have 6 40-inch shelves. How many dvd should fit on a 6-shelf unit?

*asked on August 13, 2015* -
## Chemistry

Suppose 0.500 g of sulfur combines with 1.00 g of copper. What is the empirical formula of the compound? The atomic mass of sulfur is 32.065 g and the atomic mass of copper is 63.546 g.

*asked on March 14, 2015* -
## Chemistry

Consider the decomposition of a metal oxide to its elements where m represents a generic metal. M2O(s)2M(s)+1/2O2(g) the delta G is 10.30 I need to find K and PressureO2 at 298K I know the equations but i keep getting the answer wrong could you please help

*asked on July 12, 2013* -
## Chemistry

What's is the concentration of silver ions in a saturated solution of silver carbonate? The k^sp of Ag2CO3 is 8.1x10^ -12. Is the answer 5.88x10^-8? I have a test tomorrow and I really need to make sure I'm doing these problems right, but I feel like I am

*asked on May 9, 2013* -
## Math

Please help me factor this, I just can't get it to work. -12x^2 - 35x - 18 Thanks!

*asked on March 3, 2013* -
## Custer's Last Stand

I have only been around for two research days for this big project on Custer's Last Stand, and I have some information and a LOT of books, but I need quick, straightforward info that I can work around. Any solid information you know pertaining to details

*asked on December 19, 2012* -
## math

I was wondering if someone could double check my work on a test I'm self correcting. Here's the problem, it has to do with Cramer's Rule. 24x + 6y = 11 24x + 60y = -25 I ended up finding the base determinant (D), and then dividing Dx and Dy by D. My

*asked on December 19, 2012* -
## Physics

When we lauch a space shuttle will it go with Earths rotationor would it go opposite?

*asked on October 31, 2012* -
## Chemistry

Which of the following transition metal ions has a color? Cr3+ , hg2+, v2+ How can you predict that? I don't understand!!

*asked on October 14, 2012* -
## Math

The monthly car payments for Ted Nelson's last eight customers were $266, $285, $285, $285, $285, $315, $325, and $344. Decide whether the mode represents these data well. Explain. Please help, I think yes, because it has a mode and it makes up half of the

*asked on March 5, 2012* -
## statistics

Write the null and alternative hypotheses. Justify which is the claim. A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is less than 900 hours

*asked on December 9, 2011* -
## MATH HELP!!!!!!! :(

This is a riddle, and I'm supposed to find a 5-digit number from it..... My thousand's digit is the first that is perfect, but if you're not happy with that, it's also the product of the first two primes. My units digit is the odd of those two primes, and

*asked on August 24, 2011* -
## Basic Algebra

solve the equation m, and check the solution: 5/6x-1/5x+4=7/10x

*asked on July 16, 2011* -
## Calculus (urgent!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

*asked on April 6, 2011* -
## Math-REALLY CONFUSED

Ok, so this worksheet says that a regular heptagon has 7 sides. So, would it have 7 angles, 4 diagonals, 5 triangles, and that the angle sum of the figure is 900 degrees. Am I right on those? But then it says to find the "Measure of each angle". Wouldn't

*asked on March 21, 2011* -
## Calculus (pleas help!!!)

A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=2. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally, find

*asked on March 16, 2011* -
## Calculus

Find dy/dx in terms of x and y if xlny+y^6= (9)lnx

*asked on March 15, 2011* -
## Writing-Please Help! :(

What is a word that ryhmes with life, but goes with the words: love and life?

*asked on March 7, 2011* -
## MATH

Amtrail trains provide efficient, nonstop transportation between Los Angeles and San Diego. Train A leaves Los Angeles headed toward San Diego at the same time that Train B leaves San Diego headed for Los Angeles, traveling on parallel tracks. Train A

*asked on January 12, 2011* -
## English

What is the adjective in the sentence: It is about the same size as the United States. Also, what are the adjectives and what do they describe in the sentences: The flutes are a third group of instruments. The small keys send a burst of air to large pipes

*asked on January 11, 2011* -
## DRESS DECORATION

A BODKIN IS USED IN MAKING WHICH ONE OF THE FOLLOWING?

*asked on January 3, 2011* -
## physics

A driver is running 3.6 m/s and dives out horizontally from the edge of a vertical cliff and reaches the water below 2.0s later. A) How high was the cliff? B) How far from its base did the driver hit the water?

*asked on December 6, 2010* -
## chemistry

Predict the molecular and bond angle for each molecule or ion given below: SO3, ClO3-, NF3, SO42-

*asked on November 13, 2010* -
## sociology

Are there any gender issues involved (differential treatment of men and women) in the film "Catfish in black bean sauce"?

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

An airplane normally flies at 280 km/h. What is its airspeed if it experiences 80 km/hr headwind?

*asked on October 3, 2010* -
## math

Use the limit definition of the derivative to find f′(x) if 1. f(x) = x^2 + 3x 2. f(x) = 1/x + 1 now what i am confuse with is that there is no value given for x. So how is one suppose to do these problems. please show steps and this is just the 3rd

*asked on September 13, 2010* -
## Maths

Two roots of the equation x^3+px+q are -1and 3.The third root is?

*asked on May 30, 2019* -
## Physics

The equation y=25sin(120t-4x) represent a Wave motion.Determine the frequency and period

*asked on April 27, 2019* -
## Social Studies

Describe the geographical features of tour community por región .How might they hace influenced people to settle there?

*asked on October 11, 2018* -
## Math

The measure of one angle is described as twelve more than four time a number .

*asked on January 16, 2018* -
## Statistics of Psychology

A population of N=6 scores ha EX=12 and Ex squared=54. What is the value of SS for this popluation

*asked on October 28, 2017* -
## Calculus II

Hi, I can't seem to find out how to do this. My textbook has two Q(t) values in the example and I don't know how to interpret this problem. An institute finds that the average student taking Elementary Machine Shorthand will progress at a rate given by

*asked on October 15, 2017* -
## Calculus II

I'm having trouble getting started. Steve said it's similar to another question I asked but I don't know how to begin. Any help? Suppose a cell of volume V cc is surrounded by a homogeneous chemical solution of concentration C g/cc. Let y denote the

*asked on October 8, 2017* -
## Math

A small country consists of seven states; there are 189 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown, State A: 1283 State B: 2374 State C: 2725 State D: 2155 State E: 1592 State F:

*asked on March 26, 2017* -
## Math

Use the Hamilton method of Apportionment to make the assignment. In a recent census, Iowa's population in thousands was 4,503, Illinois' was 8,220, and Indiana's was 5,300. Allocate 31 members of the U.S. House of representatives to these three states.

*asked on March 26, 2017* -
## MAth

Determine when the Hamilton method gives an Alabama paradox and who lost the representative. Increase the committee size by one seat at a time, starting from an 8-member committee. Given: City A, City B, and City C are cooperating to build a community

*asked on March 26, 2017* -
## GEOGRAPHY

ON A JOURNEY FROM NEWYORK TO LAGOS, TO CORRECT STANDARD TIME YOU MUST PUT THE HAND OF YOUR WATCH ......................

*asked on March 26, 2017* -
## MATHS

SIMPLIFY SIN RAISE TO POWER 4 MINUS COS RAISE TO POWER4 DIVIDED BY 1 MINUS 2SIN RAISE TO POWER 2

*asked on March 26, 2017* -
## Algebra

The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line With slope of —0.4. See the figure below. Suppose that the height of the candle after 11 hours is

*asked on March 20, 2017* -
## Economics

In 1997, the price of a particular basket of goods was $2,900. In 1998, the price of the same basket was $3,300. In 1996, the base year, the price of the basket was $2,500. (Hint: price index is price indexed to a base year.) A. Calculate price index for

*asked on March 5, 2017* -
## proportion and percentages problem

in a town of 3375 inhabitants 8/9 per cent are ill with influenza. how many people is that?

*asked on January 31, 2017* -
## Math

Dylan met his goal today of completing 85% of his field goal attempts. He made 51 field goal attempts. How many attempts has he made this season

*asked on December 23, 2016* -
## 6th grade math

During snack time at preschool, the teacher divided 3/5 of a gallon of milk evenly between 2 students. how much milk did each student get?

*asked on October 2, 2016* -
## Social studies

What is one major similarity between judaism and zoroastrianism? A. Both are based on the idea of a covenant with god. B. Both state that each individual has free will to do good or evil C. Both stress of the importance of judgement day and an afterlife D.

*asked on September 30, 2016* -
## CHECK MY WORLD HISTORY ANSWERS

1 star* at the end of each question and multiple stars*** at the end of my answer 1. Which laws called for strict separation of the races in the South? * anti-discrimination laws Plessy v. Ferguson laws Jim Crow laws**** Boycott Laws 2. All of the

*asked on May 24, 2016* -
## Physics

A 0.32 kg box of macaroni is held in place at the front of a 3.31 kg shopping cart only by the force of static friction as the shopping cart accelerates. Determine the minimum acceleration, in m/s 2, that the shopping cart must have if the box is to be

*asked on April 21, 2016* -
## Physics

A particular Ferris wheel takes you through one complete revolution every 25.3 seconds. If the radius of the Ferris wheel is 10.4 m, and your mass is 63.3 kg, calculate: (a) Your apparent weight, in N, when you are at the top of the Ferris wheel. (b) Your

*asked on April 21, 2016* -
## Physics

A 2 kg block is resting on a 37 degree frictionless inclined plane, attached by a string to a frictionless pulley at the top of the plane, over which a second mass of 3.3 kg hangs down. Find the magnitude of the hanging mass’s acceleration.

*asked on April 21, 2016* -
## Physics

A powered model airplane of mass 1.7 kg is tied to a ceiling with string and allowed to fly at speed 0.21 m/s in a circular path of radius 0.86 m while suspended by the string which makes a constant angle with respect to the vertical. (a) What is the

*asked on April 21, 2016* -
## Physics

A 410 kg race car is rounding a curve in the road which is banked at an angle of 23.4 degrees from the horizontal. Assume that there has just been a massive snowfall and the road’s surface is frictionless. What must the radius of the curve be if the car

*asked on April 21, 2016* -
## Physics

A small disc of mass 0.7 kg is attached to a string on a frictionless table top. The string passes through a small hole in the centre of the table and is attached to a mass of 0.68 kg suspended below the table and above the floor. The disc can thus move in

*asked on April 21, 2016* -
## Physics

A 570 kg truck is carrying a large 1.9 kg box on its cargo deck when it starts to accelerate. If the coefficient of static friction between the box and the truck’s deck is 0.26, what is the maximum acceleration, in m/s 2, that the truck can have without

*asked on April 21, 2016* -
## Physics

A wet bar of soap slides down a ramp 9.4 m long inclined at 8.0âˆ˜ . How long does it take to reach the bottom? Assume Î¼k = 0.064.

*asked on October 22, 2015* -
## Maths

If alpha amd beta are zeroes of polynomial x^2+8x-6 form the polynomial whose zeroes are 1 /2alpha and 1/2beta.

*asked on October 2, 2015* -
## Physics

A car is going 18.3 m/s down a road. At time t=0s, a squirrel runs in front of the car 36 meters away. It takes the driver t=0.67s to slam on the brakes, but after that , the brakes offer a frictional force F(fr)=21000N. Her car masses at 1860 kg. a) How

*asked on May 17, 2015* -
## Chemistry

Step 1: A 12.70mL sample of cyanide solution was mixed with 25.00mL of a solution of nickel ions at an appropriate pH to form the Ni-cyanide complex. The resulting solution was titrated cs 0.0130M EDTA and required 10.10mL to reach the end point. Step 2:

*asked on March 24, 2015* -
## Chemistry

Given that 12.25 g of aluminum sulfide is reacted with excess water. How many grams of aluminum hydroxide can be obtained? The molar mass of aluminum sulfide is 150.0 g and the molar mass of aluminum hydroxide is 78.0 g.

*asked on March 14, 2015*