kirk
Most popular questions and responses by kirk
geometry
The Louvre Pyramid in Paris, France, has the same proportions as the Great Pyramid of Giza in Egypt. The width of the Louvre Pyramid is 35.42 meters, and the width of the Great Pyramid of Giza is 0.23033 kilometers. What is the scale factor of the Louvre
asked on August 18, 2016 
math
Four blue socks, four white socks, and four gray socks are mixed in a drawer. You pull out two socks, one at a time, without looking. a. Draw a tree diagram along with the possible outcomes and the probabilities of each branch. b. What is the probability
asked on August 15, 2010 
chemistry
How many moles of magnesium are needed to react with 16 g of O2? 2 MgO (s) + O2 (g) → 2 MgO (s)
asked on October 21, 2014 
math
On a certain exam, Tony corrected 10 papers and found the mean for his group to be 70. Alice corrected the remaining 20 papers and found that the mean for her group was 80. What is the mean of the combined group of 30 students?
asked on August 12, 2010 
geometry
A cylindrical beaker has a height of 5 inches and a volume of 63 cubic inches. A scientist pours a chemical from the beaker to a similar beaker with a height that is 100% greater. What is the volume of the larger beaker?
asked on August 18, 2016 
geometry
A slow cooker is used to cook food slowly. The diameter of a slow cooker is 15 inches, and the volume is 1400 cubic inches. A second slow cooker has a diameter that is 20% greater. What is the volume of the larger pot?
asked on August 18, 2016 
geometry
An artist wants to make a statue of a man who is 6 feet tall. The artist wants the scale of the statue to be 3.2. What is the height of the statue?
asked on August 18, 2016 
Math
What geometric properties make “SOS” a good choice for the international distress symbol?
asked on August 28, 2010 
math
An estimate of the fish population of a certain pond was found by catching 200 fish and marking and returning them to the pond. The next day, 300 fish were caught, of which 50 had been marked the previous day. Estimate the fish population of the pond.
asked on August 12, 2010 
math
Bill got 52 correct answers on an 80question test. What percent of the questions did he answer incorrectly?
asked on March 17, 2010 
geometry
The Statue of Liberty is 3661 inches from the base to the tip of the torch. A New York vendor sells a souvenir model of the statue that is 6 inches tall. What is the scale factor of the model? Round to the nearest thousandth.
asked on August 18, 2016 
math
On a roulette wheel are 36 slots numbered 1 through 36 and 2 slots numbered 0 and 00. You can bet on a single number. If the ball lands on your number, you receive 35 chips plus the chip you played. a. What is the probability that the ball will land on 17?
asked on August 14, 2010 
Physics
An antelope moving with constant acceleration covers the distance between two points 75.0 m apart in 6.20 s. Its speed as it passes the second point is 15.0 m/s. (a) What is its speed at the first point? (b) What is the antelope’s acceleration?
asked on June 9, 2013 
Geometry
The Great Pyramid of Cheops is a right square pyramid with height of 148 m and a square base with a perimeter of 940 m. The Transamerica Building in San Francisco has the basic shape of a right square pyramid that has a square base with a perimeter of 140
asked on September 3, 2010 
geometry
A globe has a diameter of 24 inches. A smaller globe has a diameter of 18 inches. What is the surface area to volume ratio of the smaller globe? Round to the nearest hundredth.
asked on August 18, 2016 
math
Jim rolled a fair die 5 times and obtained a 3 every time. He concluded that on the next roll, a 3 is more likely to occur than the other numbers. Explain whether this is true.
asked on August 12, 2010 
Math
Use the tagging and recapturing technique to estimate the number of fish in a pond. Suppose 140 fish were captured, tagged, and released. Then 50 fish were recaptured and among them 20 were found to be tagged. Estimate the number of fish in the lake.
asked on March 25, 2010 
geometry
A small shipping crate is a cube with a side length of 8 inches and a surface area of 384 square inches. A large shipping crate has a surface area of 864 square inches. What is the side length of the large crate?
asked on August 18, 2016 
math
Bill got 52 correct answers on an 80question test. What percent of the questions did he answer incorrectly?
asked on March 17, 2010 
math
Carlin’s Pizza House offers 3 kinds of salad, 15 kinds of pizza, and 4 kinds of dessert. How many different threecourse meals can be ordered
asked on August 12, 2010 
physics
an ideal fluid in a pipe of diameter 14cm is moving at 6.0m/s. If the incompressible fluid density is 1.05grams/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?
asked on April 19, 2012 
gemoetry
A selfsupporting ladder placed so that the angle between the ladder and the ground is 75.5° can be used to test whether the ladder can support a certain load. The diagram represents a ladder placed next to a window that is 20 feet above the ground. What
asked on April 9, 2016 
physics
A wire of diameter 0.65mm and length 6.0m stretches 10mm when 5.5kg is hung from it. What is the Young's modulus for the wire and what is the effective spring constant for the stretching wire
asked on April 19, 2012 
Math
John claimed he had a garden twice as large as Al’s rectangular shaped garden that measured 15 ft by 30 ft. When they visited John’s rectangularshaped garden, they found it measured 18 ft by 50 ft. Al claimed that it could not be twice as large since
asked on August 30, 2010 
math
On each of four consecutive plays in a football game, a team lost 11 yd. If lost yardage is interpreted as a negative integer, write the information as a product of integers and determine the total number of yards lost.
asked on March 16, 2010 
math
The largest bubble chamber in the world is 15 ft in diameter and contains 7259 gal of liquid hydrogen at a temperature of 2247°C. If the temperature is dropped by 11°C per hour for 2 consecutive hours, what is the new temperature
asked on March 16, 2010 
Geometry
Find the cost of carpeting the following rectangular rooms: a. Dimensions: 6.5 m * 4.5 m; cost = $13.85>m2 b. Dimensions: 15 ft * 11 ft; cost = $30>yd2
asked on September 3, 2010 
math
Sheryl correctly answered 85% of the questions on her 200question biology final. Fernando scored a 90% on his 180question chemistry final. (a) Who answered more questions correctly? ____________________ (b) Who answered more questions incorrectly?
asked on March 26, 2010 
math
The greatest recorded temperature ranges in the world are around the “cold pole” in Siberia. Temperatures in Verkhoyansk have varied from 294°F to 98°F. What is the difference between the high and low temperatures in Verkhoyansk?
asked on March 16, 2010 
math
Give an example of a set of data for which a stem and leaf plot would be more informative than a histogram.
asked on August 12, 2010 
math
Riena has six unmarked CDs in a box, where each is dedicated to exactly one of English, mathematics, French, American history, chemistry, and computer science. Answer the following questions: a. If she chooses a CD at random, what is the probability she
asked on August 12, 2010 
math/hurry
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total students are in the class?
asked on March 26, 2010 
Math
2/5 of 25=
asked on August 28, 2013 
math
a car depreciates in by avalue of $1000 per year. The original value of the car is $30,000. Let V(x) be the value of the car in x years. Write the linear function that represent the value of the car in x years. what will be the value of the car after 7
asked on June 17, 2013 
math
The amount of gold jewelry and other products is measured in karats (K), where 24K represents pure gold. The mark 14K on a chain indicates that the ratio between the mass of the gold in the chain and the mass of the chain is . If a gold ring is marked 18K
asked on March 17, 2010 
math
If Jack Jones lost a total of 66 yd in 11 plays, how many yards, on the average, did he lose on each play?
asked on March 16, 2010 
math
The following are the amounts (to the nearest dollar) paid by 25 students for textbooks during the fall term: a. Draw an ordered stem and leaf plot to illustrate the data. b. Construct a grouped frequency table for the data, starting the first class at
asked on August 14, 2010 
math/hurry
A plumber needs four sections of pipe 2 7/8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?
asked on March 26, 2010 
Math
plumber needs four sections of pipe 2 7 8 feet long. Can this be cut from a 12 foot section? If so, how much pipe will be left over? If not, why not?
asked on March 25, 2010 
Math (bobpursely)
Given that a*b = abb/a Evalute 1)3+4*8 is it 328/4=6? 2)2*(4*8) is the ans 64? it means ab minus B divided by A
asked on June 27, 2009 
Math
A Boeing 747 jet is approximately 230 ft. long and has a wingspan of 195 ft. If a scale model of the plane is about 40 cm long, what is the model’s wingspan?
asked on March 18, 2010 
math
. A Boeing 747 jet is approximately 230 ft long and has a wingspan of 195 ft. If a scale model of the plane is about 40 cm long, what is the model’s wingspan?
asked on March 17, 2010 
Physics
An elevator is lifted up by a thick steel cable. While the elevator is moving upwards with a decreasing velocity, a. the upward force on the elevator by the cable is greater than the downward force of the Earth b. the amount of upward force due to the
asked on February 8, 2013 
physics
A 70g steel bullet moves at 200m/s just before imbedding itself into a thick anchored wood post. If 70% of the initial kinetic energy goes into heating the bullet (steel c = 460 J/kgC)...how hot does the bullet become if it initially is at 26 degrees
asked on April 19, 2012 
math
If the lottery with odds as in exercise 15 has a prize of $13,567,290, is buying a ticket for $1 a fair deal? Explain your answer.
asked on August 14, 2010 
math
On a roulette wheel, the probability of winning when you pick a particular number is . Suppose you bet $1.00 to play the game, and if your number is picked, you get back $36. a. Is this a fair game? b. What would happen if you played this game a large
asked on August 12, 2010 
Physical Science
. A force of 400.0N is exerted on a 1,250N car while moving it a distance of 3.0m. How much work was done on the car?
asked on April 27, 2010 
math/hurry
Round each of the following numbers as specified. (a) 508.576 to the nearest hundredth ________________ (b) 508.576 to the nearest tenth ________________ (c) 508.576 to the nearest hundred
asked on March 26, 2010 
math
A car company is offering car loans at a simple interest rate of 4.7%. Find the interest charged to a customer who finances a car loan of $7200 for 3 yr.
asked on March 17, 2010 
Math
1 2/3 + 2/3 =
asked on September 3, 2013 
Math
Explain how you would find the volume of an irregular shape.
asked on August 30, 2010 
Math
Which of the following properties do not change under a size transformation? Explain how you can be sure of your answers. a. Distance between points b. Angle measure c. Parallelism; that is, if two lines are parallel to each other, then their images are
asked on August 28, 2010 
m
If events A and B are from the same sample space, and if and , can events A and B be mutually exclusive? Explain.
asked on August 14, 2010 
math
From a set of eight marbles, five red and three white, you choose one at random. What are the odds in favor of choosing a red marble
asked on August 12, 2010 
history
Do you think federal government involvement in education is beneficial? Why or why not?
asked on April 28, 2010 
math
Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. (a) What did the bicycle sell for regularly? ______________ (b) What is the amount of the new
asked on March 26, 2010 
Math
Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?
asked on March 25, 2010 
Math
I am not sure about this problem Find four large cities around the world and an approximate percentage rate of population growth for the countries in which the cities are located. Estimate the population in each of the four cities in 25 yr.
asked on March 18, 2010 
maths
Given that a*b = abb/a Evalute 1)3+4*8 is it 328/4=6? 2)2*(4*8) is the ans 64?
asked on June 27, 2009 
Chemistry
Is it possible to have a negative specific heat capacity lf calorimeter?
asked on August 22, 2018 
Algebra
2y8=3y18
asked on January 25, 2016 
geometry
use the midpoint formula to find endpoint c. A = (3, 2) B is midpoint (5, 4). I know AB is I/2 of AC. I tried and got x= 14, y= 11. Correct? and how do you graph it? Thanks
asked on April 6, 2015 
algebra
I need help in identifying a graph. I tried textbook and plugging no. with no luck All numbers on right side of (y) line. Bottom of parabola is on x=4 and y=4, going up f(x) dot is on x=3, y=3 (left line going up); right line going up is x=5, y= 3;
asked on March 25, 2015 
Math
2 4/5 + 1 3/5 =
asked on September 12, 2013 
Math
Ms. Sue can u explain how you got the answer 240 in my post! The one wth PEMDAS!
asked on September 4, 2013 
Math
5 1 1/3= 3/4 + 5=
asked on September 3, 2013 
Math
19+ 25/5  (2+6) = 5+ (83)^2 X (8+1) =
asked on August 29, 2013 
Math
3/101/10+4/10=
asked on August 29, 2013 
Physics
1An object is thrown upward at an initial velocity and caught at the same level as it was thrown. What should the maximum height be if the hang time is 6.4? (please report numerical value to 2 decimal places unit will not be necessary to report) 2An
asked on February 8, 2013 
Physics
Imagine a fender bender between a large truck and a small car. During the impact, Choose one answer. a. the truck exerts a greater amount of force on the car than the car exerts on the truck b. the car exerts a greater amount of force on the truck than the
asked on February 8, 2013 
Physics
The coal car for a train has a mass of 1796 kg when it is empty. The track exerts a friction force of 3132. What force should the be exerted on it by the locomotive, to produce an acceleration of 1.3? (please report the numerical value to 2 decimal places
asked on February 8, 2013 
Math
ok so having trouble with this have tried and trie but can seeem to come up with tthe answer. d/(1d)^2=(d+1)^2  1/d the answer we were given is d^52d^32d^2+3d1=0
asked on August 22, 2012 
MAT101
Suppose you have a cookie stand, and when you charge $3 per cookie box you sell 200 boxes. But when you raise your price to $4 you only sell 120 boxes. Write the equation for the number of boxes you sell as a function of the price you charge. Denote "b"
asked on July 24, 2011 
math
Two automobile dealers, A and B, had the same car which was listed at $18,000. Dealer A offered a $1200 rebate and would negotiate a further 8% discount after rebate. Dealer B offered an 8% discount and would negotiate a further $1200 rebate. (a) Which
asked on March 26, 2010 
Math
Place >,
asked on March 25, 2010 
Math
A student claimed that 9/(11) is an improper fraction. How do you respond?
asked on March 18, 2010 
math
. A realestate broker receives 4% of an $80,000 sale. How much does the broker receive?
asked on March 17, 2010

geometry
no that's how the question is asked
posted on August 18, 2016 
chemistry
what other post sir?
posted on October 22, 2014 
Math
Thank you!!!
posted on September 12, 2013 
Math
5 + (8  3)^2 times (8+1) = in parenthesis (83) is to the second power!
posted on September 4, 2013 
Math
Thank you!!!
posted on August 29, 2013 
Math
Thank you!!!!
posted on August 29, 2013 
Math
Ms.Sue: (83) is to the second power, couldn't actually write it that way....is the answer stil 240???
posted on August 29, 2013 
Algebra
sorry my math is wrong as i didn't put in the right number it should be what ms sue has
posted on August 22, 2012 
Algebra
5n42n16=0 37n=16 n=16/37
posted on August 22, 2012 
9th grade Algebra
Im sorry but you did it wrong. Remember your order of operations. First do whats in parenthasis, so nothing then exponents. catch me first off is you will get this when you substitute in. 3(2)^25*2. so you square your 2 which gives you 4 so now you
posted on August 22, 2012 
math
so basically what your doing is writting that number in a math problem. So if you have 40,689 it would look like this 40,000+600+80+9
posted on August 22, 2012 
Algebra 1
Ok so we the the area A=13.5 units^2 and we know one side is .5 units. The formula for area of a rectangle is A=LW so we put 13.5=L*.5 and this gives us 13.5/.5=L so L=27 and the perimeter P is just the four sides added up P=2L+2W P=2(27)+2(.5)
posted on August 22, 2012 
MAT101
Thank you, I was stuck on this for several hours to how to write this out, thank you again!
posted on July 24, 2011 
American Democracy
is B worked to defeated incumbent members of congress in order to replace them with members who would be more supportive.
posted on April 20, 2011 
social studies
When a society has a formal method by which the people can bring about changes in government policy, then it is the most useful indicator of the degree of democracy reached by it.
posted on March 18, 2010 
computer
The Cd Rom drive or floppy disk is the first one checked depending on if you have a floppy drive
posted on March 16, 2010 
Accounting
Crystal, The basic accounting formula is "What you have" must equal "Where it came from." Use that instead of debits and credits and you can work through almost anything. "What you have" things are pluses, and "Where it came from" are minuses. You got
posted on July 11, 2008