# Carly

Most popular questions and responses by Carly-
## math

A lawyer drives from her home, located 6 miles east and 10 miles north of the town courthouse, to her office, located 4 miles west and 14 miles south of the courthouse. Find the distance between the lawyer's home and her office. I know the answer is 26

*asked on July 19, 2016* -
## Physics

Musicians can use beats to tune their instruments. One flute is properly tuned and plays the musical note A at exactly 440Hz. A second player sounds the same note and hears that her flute is slightly "flat" (that is, at too low of a frequency). Playing at

*asked on December 9, 2014* -
## physics

if you use a horizontal force of 30 N to slide a 12 kg wooden crate across a floor at a constant velocity, what is the coefficient of kinetic friction between the crate and the floor?

*asked on October 12, 2015* -
## science

tom is marking the locations of active volcanoes on a world map. how the locations of the volcanoes are related to earths plats.

*asked on November 20, 2016* -
## math

When a situation can be modeled by a linear equation, what information do you need in order to find an equation?

*asked on October 29, 2016* -
## geometry

in quadrilateral ABCD AC is a diagonol, m

*asked on November 30, 2011* -
## chemistry

Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 10.1 centimeters per second. What is the approximate molar mass of the unknown gas?

*asked on May 26, 2011* -
## finite math

Assume that the student has a cup with 15 writing implements: 8 pencils, 5 ball point pens, and 2 felt-tip pens.In how many ways can the selection be made if no more than one ball point pen is selected?

*asked on September 14, 2010* -
## chemistry

for the list of chemicals below, write complete, balanced equations for all possible reactions that would lead to an insoluable salt. KCl, BaCl2, AgNO3, Pb(NO3)2, K2SO4, HNO3

*asked on October 28, 2011* -
## Science

1. An electric space heater draws 15.0 A from a 120 V source. It is operated, on average, for 5.0h (hours) each day. a) How much power does the heater use and b) At $.10 per kWh, what does it cost to operate the heater for 30 days? 2. Suppose each person

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

One member of the debate team is going to be chosen President. Each member is equally likely to be chosen. The probability that a girl is chosen is 2/3 the probability that a boy is chosen. If the debate team has 20 people, how many girls are there?

*asked on May 19, 2019* -
## math

I need help calculating (a) the total installment price. (b) the carrying charges, and (c) the number of months needed to save the money at the monthly rate to buy the item below for its cash price (remember to round up). A bike with a cash price of $500,

*asked on January 26, 2010* -
## Health

1. In a soccer game, the coach of the home team realizes her players are not as highly skilled as the other team and she wishes to avoid a high scoring game which she believes her team will not win. How can she apply coaching tactics to give her team the

*asked on December 15, 2016* -
## Calculus

Find the largest and smallest values of the given function over the prescribed closed, bounded interval of: f(x)=(3x-1)e^-x for 0

*asked on July 10, 2011* -
## Science

What is an element named after a country in the western hemisphere?

*asked on November 18, 2009* -
## physics

Three blocks on a frictionless surface are connected by massless strings, with M1 = 1.40 kg, M2 = 2.40 kg, and M3 = 3.60 kg. Due to the force F acting on M3, as shown, the system accelerates to the right. Given that T1 is 3.50 N, calculate T2

*asked on February 12, 2014* -
## math

Find the lateral and surface area of the right rectangluar prism whose length is 7 cm, width is 5 cm and height is 1.5 cm. I did 2(7 x 1.5+ 1.5 x 5) and I got 36 as my lateral area. Then I add 36+ 2(7 x5) and I got 106 as my surface area. Is this right?

*asked on November 11, 2007* -
## math

Hi, Would you please check to see if I did this problem correctly? Your distance from lightning varies directly with the time it takes you to hear thunder. If you hear thunder 10 seconds after you see the lightning, you are about 2 miles from the

*asked on April 2, 2019* -
## Math

Mr Barkley has a box of books. He says the number of books in the box is divisible by 2,3,4,5 and 6. How many books could be in the box? Add another condition to the number of so that there is only one possible solution.

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

Two ships leave from the same port. One ship travels on a bearing of 157 degrees at 20 knots. The second ship travels on a bearing of 247 degrees at 35 knots. (1 knot is a speed of 1 nautical mile per hour). Calculate the bearing of the second ship from

*asked on September 30, 2017* -
## math

Write the equation of the line that passes through the points (3, -2) and (-2, 8) using the slope-intercept form. My slope is -2 So if I substitute in one of the points, -2 = -2(3) + b -2 = -6 + b Add 6 to both sides and b = 4 So my equation is: y = -2x +

*asked on October 22, 2018* -
## chemistry

Refer to 3CuCl2 (aq)+2Na3PO4 (aq) = Cu3(PO4)2+6NaCl (aq) If a student started with 18 grams of CuCl2 and enough Na3PO4 to completely react, how many grams of Cu3(PO4)2 will (theoretically) be produced?

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

Hello, I am working on exponential equations of best fit. I have a table numbered from 1-7 with corresponding numbers. I put that into my calculator and came up with the exponential equation of best fit as y = 8.46(1.42)^x Now it wants to know how long it

*asked on April 22, 2019* -
## English

I feel stupid for not knowing these but I can't figure it out! So in the sentence we have "underline the verb be (and its various forms) and decide how it's used. Circle the verb its helping or linking to and Write linking verb or helping verb on the line"

*asked on September 24, 2012* -
## Biology

If bird DNA is more similar to crocodile DNA than turtle DNA is to crocodile DNA, then... A)birds should be included amoung reptiles B)turtles and birds should be excluded from the reptiles C)the reptiles should be replaced by several new classes D)each of

*asked on February 8, 2011* -
## Chemistry

How many moles of magnesium nitride form when 1.0 mole of magnesium reacts completely?

*asked on March 19, 2017* -
## math

The air pressure at sea level is generally about 1013 hPa (hectoPascals). For every kilometer that you go up in elevation, the air pressure decreases by 12%. Write an equation that describes the air pressure when the elevation is x kilmoeters above the sea

*asked on December 14, 2016* -
## math

Suppose a radio active substance decays at a rate of 3.5% per hour. First write an exponential decay function that describes a quantity of radio active substance that starts at 100. Then determine how much is left after 6 hours? Round to the nearest

*asked on April 18, 2019* -
## math

I had to look up a restaurant's nutrition information and pick an entree. Then the question says this: Assume that one serving of fat is approximately 5 g, one serving of protein is approximately 7 g, and one serving of carbohydrates is approximately 15 g.

*asked on March 5, 2019* -
## math

I'm trying to multiply this and keep getting the wrong answer: (x - 5)(-0.025x + 220) I have used the FOIL method and I have multiplied (x - 5) -0.025x and then multiplied (x - 5) 220. Both methods I get the same answer. But... the answer book and the

*asked on November 14, 2018* -
## Math

Given the regular decagon what is the measure of each numbered angle? There is a one in the first triangle, a three in the second, and a two in the sixth triangle in the decagon. Here are the answer choices m1=72, m2=18, m3=36 m1=18, m2=36, m3=72 m1=36,

*asked on May 25, 2018* -
## english

What grammatical structure is the italicized portion of the sentence? We walked along the mountain path looking for unusual flowers.

*asked on May 23, 2012* -
## Math

A rectangular enclosure is to be constructed with 800 feet of fence in order to have four sections. What should be the dimensions in order to maximize the area enclosed? What is the maximum area?

*asked on December 1, 2013* -
## math

Hi, would you please check to see if I did this problem correctly? A recipe for 2 dozen corn muffins calls for 3 cups of flour. The number of muffins varies directly with the amount of flour you use. a. Write a direct variation equation for the

*asked on April 2, 2019* -
## math

I am doing a project for math class and it is asking for the relative change. In our book, the formula is relative change = new value - original value/original value. The project is we look up nutritional values of items at a restaurant and then we have to

*asked on September 13, 2019* -
## social studies

Identify two reasons that explain why Britain and France thought that the policy of appeasement was the best solution as a reaction to Hitler's demands.

*asked on October 27, 2008* -
## math

I am looking at an olympic event that has happened every 4 years (except for when the olympics didn't happen because of the wars). I found a line of best fit for this data and it is y = -0.0101x + 29.809 The questions are a) Does your graph have a

*asked on May 16, 2019* -
## math/stats

A hamburger chain found that 65% of all customers use mustard, when they buy hamburgers. If 5 customers randomly selected, what is the probability that none use mustard?

*asked on June 25, 2016* -
## math

How can you tell if a function is quadratic? Just if the highest power is 2? Are there any other ways?

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

What is the connection between the solutions of the equation ax^2 + bx + c = 0 and the x intercepts of the graph f(x) = ax^2 + bx + c? I'm confused here - aren't they the same thing except one is the equation of a quadratic equation and one is a graph? So

*asked on November 24, 2018* -
## physics

Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a

*asked on October 8, 2015* -
## Geometry

The surface area of the sides of a right cylinder can be found by multiplying twice the number pie by the radius times the height. If a circular cylinder has radius (r) and height (h), write an expression that represents the surface area of its size.

*asked on September 24, 2012* -
## math

I posted the question below last week and while it was answered, thank you, I am still unclear about my original question of how do I know what is considered the NEW value and what is considered the ORIGINAL value. I understand there is a change, yes, but

*asked on September 17, 2019* -
## math

I am learning about lines of best fit and how to do them on my calculator. I found the correct equation and now I need to find predicted values for x. I have all my x values and I have my equation. Do I need to do each of these manually on my calculator,

*asked on October 24, 2018* -
## math

16. Assume that there are 20,000 runners in the New York City Marathon. Each runner runs a distance of 26 miles. If you add together the total number of miles for all the runners, how many times around the globe would the marathon runners have gone?

*asked on September 4, 2018* -
## Mathematics question

A zoo keeper weighed some of the animals at Melbourne Zoo. He found that the lion weighs 90 kg more than the leopard, and the tiger weighs 50 kg less than the lion. Altogether the three animals weigh 310 kg. How much does the lion weigh? (A) 180 kg (B) 150

*asked on June 4, 2017* -
## Math

The producer of a 30 minute tv documentary about world war 1 divided it into two parts. four times as much program time was devoted to the causes of the war as to the outcome. how long is each part of the documentary?

*asked on November 22, 2016* -
## math

If someone asked: what can we learn from analyzing the standard deviation of a set of data that we couldn't learn from just looking at the measures of average, how would I answer? I know that average is the value or number in the middle of the data set and

*asked on November 11, 2016* -
## Chemistry

Calculate the mass of silver metal (Ag) produced from the reaction of 5.58 grams of copper metal (Cu) according to the following reaction: Cu(s) + 2AgNO3(aq) --> Cu(NO3)2(aq) + 2Ag(s)

*asked on February 27, 2011* -
## math

Which equation is NOT an example of a direct variation? a. y = x b. 4x + 3y = 0 c. y = 5/4 x d. 2x + 6y = 0 Direct variation is y = kx The only one that can't be changed to become this is d. Is that correct?

*asked on April 2, 2019* -
## Math

slope and y intercept form of these two problems? Y-5=1/3(x-9) 2y+6a-4x=0

*asked on October 11, 2012* -
## grade 8 math

At the annual Grade 8 ski trip, for every 2 students who skied, 3 snowboarded. Ninety-six students snowboarded. How many students skied? Show your work. Can someone help???

*asked on September 28, 2008* -
## math

Find the x-intercepts of the polynomial y = x^2 - 4x + 3 I'm not sure how to approach this -- do I first factor it and then my x intercepts are (#, 0)? So, for example, factored would be (x - 3)(x - 1) I set those equal to 0 so my x intercepts would be (3,

*asked on April 30, 2019* -
## math

Body mass index (BMI) is essentially a comparison between a person's weight and height. A BMI between 18.5 and 24.9 is considered healthy, over 25 is considered overweight, and over 30 is considered obese. How do you think a person's height varies with

*asked on February 23, 2019* -
## algebra

Given a set of data pairs, how would you decide whether to use interpolation or extrapolation to find a certain value?

*asked on January 14, 2013* -
## Math

Robin cross- stitches bookmarks and wall hangings . A bookmark takes her 1 1/2 days, and a wall hanging takes her 4 days. Robin recently spent 18 days cross- stitching 7 items. Solve the system of equations to find the number of bookmarks b and the number

*asked on February 25, 2012* -
## MATH HELP

Monica stepped outside and began to think how fast she is moving even when she is standing still. Assume that the earth is a sphere with a radius of 3960 miles and Monica is at a latitude of 13∘N. What is Monica's speed due solely to the rotation of the

*asked on October 24, 2016* -
## physics

A vertical tube with a tap at the base is filled with water, and a tuning fork vibrates over its mouth. As the water level is lowered in the tube, resonance is heard when the water level has dropped 18 cm, and again after 54 cm of distance exists from the

*asked on March 28, 2012* -
## math coordinate plane

A rectangle is plotted in the coordinate plane. The vertices (corners) of the rectangle are given as A(–2,3), B(4,3); C(–2, –2) and D(x,y). What is the ordered pair for point D?

*asked on January 21, 2010* -
## math

I have to answer the question: "why are inequalities a more realistic way to model situations than equations" and am having trouble with this. One reason I thought about is because inequalities are more applicable to real life situations. But other than

*asked on October 23, 2018* -
## Calculus

A manufacturer can produce digital recorders at a cost of 60 dollars each. It is estimated that if the recorders are sold for P dollars a piece, consumers will buy q= 150-p recorders each month. What is the average rate of profit obtained as the level of

*asked on July 18, 2011* -
## science (density)

1) mass=100g, volume=10ml,density= 2) volume=7ml, mass=70g, density= 3) mass=50g, volume=10cm3, density= 4) volume=30cm3,mas=90g,density= 5) mass=120,volume=6ml,density= Thanks everyone i apresheate your help.

*asked on October 9, 2008* -
## math

Try as I might, I just don't understand the difference between inductive and deductive reasoning. I have tried reading about it and they keep talking about general and specific things but I just don't get it. Is there an easy, lay way to explain it so I

*asked on November 12, 2018* -
## Maths

A gift box is made from a rectangular piece of cardboard that is three times as long as it is wide. 5 cm squares are cut from each corner and the ends are then folded up to make the box. If the box's volume is 4340 cm^3, find the length and width of the

*asked on September 28, 2017* -
## Math

You have a total of 21 pens and pencils. You have 3 more pens than pencils. Write a system of linear equations that represent this situation. How many of each do you have?

*asked on January 5, 2016* -
## Physics

Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 38 kg, m2 = 37 kg, and m3 = 17 kg. a.) The pulling force is equal

*asked on October 8, 2015* -
## english

14. cat \kat\ n. 1. a carnivorous mammal (Felis catus) long domesticated as a pet and for catching rats and mice; 2. any of a family of carnivorous mammals (as the domestic cat, lion, tiger, leopard, jaguar, cougar, wildcat, lynx, and cheetah) What do the

*asked on January 5, 2012* -
## math

Would someone check this for me please because I'm a little confused. The height of a golf ball in meters can be described by the equation h = -4.9t^2 + 22.7t, where t is the number of seconds after it was hit. a) Find the vertex AND explain what each

*asked on May 9, 2019* -
## math

How do I factor 9x^2 - 49? I believe this is a difference of squares, but I'm not sure how to do it with the 9 in front of the first term.......

*asked on December 4, 2018* -
## math

I'm sorry, but I am asking this question again because the response I received was a question that I could not answer - that's why I am asking here. Thank you. If someone asked: what can we learn from analyzing the standard deviation of a set of data that

*asked on November 13, 2016* -
## physics

A 3.90 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.1N at an angle theta=32.5degrees above the horizontal, as shown. a.) What is the magnitude of the acceleration of the block when the force is applied?

*asked on October 8, 2015* -
## calculus

At age 15, Nan is twice as tall as her 5-year-old brother Dan, but on Dan's 21st birthday, they find that he is 6 inches taller. Explain why there must have been a time when they were exactly the same height

*asked on June 23, 2011* -
## math

hello, I am to calculate a model length of a boat and a car. The boat's true length is 17 feet and the car's true length is 20 feet. The model will be on a 1:16 scale. Could you tell me how I get started with this please?

*asked on September 18, 2016* -
## math

a map is drawn to the scale of 3/4 inch = 50 miles. WHat is the actual distance between two towns that are 1 1/2 inches apart on the map?

*asked on June 22, 2011* -
## math

If you're looking at a set of data, how can you tell whether a linear or exponential line of best fit would be most appropriate for the data?

*asked on November 29, 2018* -
## Math

Suppose that D + E = A, that N/A = 0.18 and that D/A = 0.85 . Solve for N/E.

*asked on February 19, 2018* -
## english

some spectators in the back row of the rodeo jeered at the clowns after the last event.

*asked on September 29, 2016* -
## Math

If each small square on a grand chest board is 2 cm x 2 cm and the diagonal on the whole board measures square root of 800 cm. How many small squares are on the board?

*asked on September 14, 2016* -
## math

How do I find the x intercepts of the function f(x) = -6x^2 + 2700x - 63,750 I know the y has to = 0, but I'm not sure how to solve for x.... Thank you.

*asked on November 8, 2018* -
## math

I have two questions: If I have a table such as: Elevation Temperature in 1000 of ft in degrees Fahrenheit 4 73 5 69.5 6 60 So I have found the slope to be -3.5 and the y-intercept to be (0,87) The equation of my line is y = -3.5x + 87 1) Is the left

*asked on October 17, 2017* -
## calculus

A stone is dropped from a height of 144 feet. a. When will the stone hit the ground? b. With what velocity does it hit the ground?

*asked on June 26, 2011* -
## math probability

there are 3 nickles 2 dimes and 5 quarters in a purse. the three coins are selected in succession at random. find the probability of selecting2 nickles , then a quarter.

*asked on March 31, 2011* -
## math- pre calculus

you are depositing $1000 dollars in a savings account and are given the following options. 6.2% annual interest rate, compounded annually 6.1% annual interest rate, compounded quarterly 6.0% annual interest rate, compounded continuously for each option,

*asked on March 3, 2010* -
## Math

1. What is the distance between the points (1, 4) and (4, 8)? I said Distance = 5 2. Find the slope between (1, 4) and (4, 8) I said 4/3 3. Are the expressions (4x+4)/4 and x+1 equivalent? I said Yes 4. Simplify (x+y)2 x2 + 2xy + y2 5. Is (x – y )2 = x2

*asked on February 12, 2016* -
## Physics

The space shuttle is in a 3e+5 m high orbit over the earth. The radius of the earth is 6.37e+6 m, the mass of the earth is 5.98e+24 kg. What is the distance from the center of the earth to the space shuttle? I don't know whether I would double the radius

*asked on January 31, 2015* -
## chemistry

1. How many grams of P4 will react with 35.0 grams of H2O according to the balanced equation P4+5O2+6H2O=4H3PO4? 2. If you have 50 grams of P4, 40 grams of H2O, and an unlimited supply of O2, which reactant (according to the above balanced equation) is the

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

By the cofunction property, cos 33° = sin _______

*asked on January 21, 2011* -
## science (density)

1) mass=100g, volume=10ml,density= 2) volume=7ml, mass=70g, density= 3) mass=50g, volume=10cm3, density= 4) volume=30cm3,mas=90g,density= 5) mass=120,volume=6ml,density= Thanks everyone i apresheate your help.

*asked on October 9, 2008* -
## math

Peter is reading a 103 page book. He has read three pages more than one fourth of the number of pages he hasn't yet read. How many pages he has bot read? Estimate how many days it will take Peter to finish the book if he reads about 8 pages per day. I'm

*asked on November 1, 2007* -
## AP bio

Explain why adaptations of organisms to interspecific interactions do not necessarily represent coevolution. What would a researcher have to demonstrate about an interaction between two species to make a convincing case for coevolution? i don't understand

*asked on October 4, 2007* -
## math

Describe how the slope of a line relates to a trend line.

*asked on January 13, 2013* -
## English

So for the summer I had to read cat's eye by Margaret Atwood and this happened to be a hard book to understand for me. I need help writing an essay in which I have to write an analytical essay detailing 3 events in the story where the author notably

*asked on August 24, 2012* -
## math

susan, joanne, and diane are triplets. susan has red, blue, green, and yellow sweaters. janne has green, red, purple, and white sweaters. diane's sweaters are red, blue, purple, and mauve. each girl has only one sweater of each color, and will pic a

*asked on May 28, 2012* -
## Math

I posted this question yesterday but did not get a response so am posting again in hopes that I will get a response today. I am asking for someone to check my answers. The table shows the cost of renting a full-size rental car, based on the number of miles

*asked on October 15, 2017* -
## math

I'm wondering if someone could check my work please? I have a table: Distance driven in miles Total Cost 0

*asked on October 14, 2017* -
## Math

1. Use the associative property to rewrite the expression 97 + (3 + 13) I rewrote this as (97 + 3) + 13 since the associative property is about changing the grouping. The answer in the back of the book says 97 + (3 + 13) -- the same as the original

*asked on February 21, 2016* -
## Math

We are adding positive and negative numbers. The question is State positive or negative or it depends along with my answers. Are these correct? Positive + positive: positive Positive + negative: it depends Negative + negative: negative Positive –

*asked on February 12, 2016* -
## Physics

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

*asked on May 22, 2012* -
## Calculus

Find the derivative of: y= 5^x + 15/x^6 I'm assuming I need to take the natural log of each side, but I get stuck after that part.

*asked on July 18, 2011* -
## algebra

I have to find the square footage of my kitchen floor with the length of one side being 8 inches. So, now I know I can make X=8. f(x)=x^2 is the template needed for this solution. If f(8)= the square footage of my kitchen floor, what will my answer be?

*asked on March 2, 2011*