# Nora

Popular questions and responses by Nora-
## Operations management - Business

Determine which shipping alternative would be most economical to ship 80 boxes of parts when each box has a price of $200 and holding costs are 30 percent of price, given this shipping information: overnight, $300, two-day, $260, six-day, $180.

*asked on January 12, 2009* -
## Geometry

A construction crew wants to hoist a heavy beam so that it is standing up straight. They tie a rope to the beam, secure the base, and pull the rope through a pulley to raise one end of the beam from the ground. When the beam makes an angle of 40 degrees

*asked on March 16, 2016* -
## English

Read the following short paragraph. This paragraph is full of short, choppy sentences. Use your knowledge of sentence variety and prepositional phrases to improve the paragraph. Include all of the details in your revised version. The clouds seemed to loom

*asked on August 8, 2014* -
## Math/Statistics

Three hundred twelve viewers were asked if they were satisfied with TV coverage of a recent disaster. Gender Female Male Satisfied 90 53 Not Satisfied 124 45 (a) Find P(satisfied). (Give your answer correct to two decimal places.) (b) Find P(satisfied |

*asked on May 29, 2013* -
## general chemistry

A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the

*asked on October 23, 2010* -
## Math/Statistics

Consider the following. P(A) = 0.27 and P(B) = 0.36, A and B are mutually exclusive events (a) Find the probability P(A). (Give your answer correct to two decimal places.) (b) Find the probability P(B). (Give your answer correct to two decimal places.) (c)

*asked on May 29, 2013* -
## math

One side of the rectangle lies along the line 4x+7y+5=0 , two of its vertices are (-3,1)and (1,1). find (i) the equations of the other three sides. (ii) the angle between the two diagonals of the rectangle . (iii) the area of the rectangle.

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

A group of people was surveyed about whether the council should collect recycling once a week instead of once a fortnight. Two-thirds of the people said ‘Yes’, and one-third said ‘No’. A year later the same group of people was surveyed again and

*asked on April 20, 2019* -
## 7th grade honors math

Which equation represents an inverse variation? A.3x=2y B.2-2x+y=0 C.y squared= x D.xy=5 If you could tell me the anser then explain how you got it that would be awesome!

*asked on March 14, 2011* -
## Algebra 2

Given the arithmetic sequence 11, 5, -1, ..., find . [Show all work.] how to solve?

*asked on May 12, 2020* -
## Science, please help!

Please check my answer! Fill in the blank for below: Resources that cannot be replaced in the environment once they are used are _____. renewable resources compost nonrenewable resources I think the answer is nonrenewable resources.I might be incorrect, so

*asked on January 22, 2018* -
## chimestry

A sample of carbon dioxide occupies a volume of 1.50L at 165kPa pressure. What pressure would the gas exert if the volume was increased to 2.5L?

*asked on May 16, 2017* -
## Calculus

How do you differentiate sin^2(cos t) My work: =2sin(cos)(cost)(-sint)

*asked on July 14, 2016* -
## Physics

The equation of a transverse wave traveling in a string is given by y(x,t) = 10 cos (π/2)(0.0050x - 8.0t + 0.57), in which x and y are expressed in centimeters and t in seconds. Write down the equation of a wave which, when added to the given one, would

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

A uniform cylindrical spool of mass M and radius R unwinds an essentially massless rope under the weight of a mass m. If R = 12 cm, M = 400 gm and m = 50 gm, find the speed of m after it has descended 50 cm starting from rest. Solve the problem twice: once

*asked on March 31, 2015* -
## Science, Physics

Concave mirrors can be used as for shaving or applying make up. The face must be inside the focus. You hold a concave mirror, with a focal length of 40 cm, about 30 cm from your face. Where is your image located? How much bigger than your face is the

*asked on March 19, 2015* -
## Chemistry

Provide the balanced reaction, the value of K, and E(cell) at equilibrium for the for the electrochemical cell created from the two half-cell reactions below Cr^(3+) + e ==> Cr^(2+) Fe^(2+) + 2e ==> Fe Well, I got the balanced reaction: 2Cr^(2+) + Fe^(2+)

*asked on March 18, 2015* -
## Enlgish

I just need an explanation from the instructions. I am a bit confused about it. EITHER use EACH of these nouns in a sentence which shows a human trait or characteristic OR choose one noun and use it in FIVE different sentences showing five human traits for

*asked on November 8, 2014* -
## Math/Statistics

Consider the following. P(A) = 0.27 and P(B) = 0.36, A and B are mutually exclusive events (a) Find the probability P(A). (Give your answer correct to two decimal places.) (b) Find the probability P(B). (Give your answer correct to two decimal places.) (c)

*asked on May 28, 2013* -
## chemsitry

A sample consisting of 0.025 mol of a solid compound is placed inside a metal cylinder. The cylinder was immersed in a water bath consisting of 10.00 kg of water at an original temperature of 25.00 °C. When the compound decomposes, the temperature of the

*asked on October 23, 2010* -
## Finance

What factors determine the value of stock? What do you think is the most important factor and why?

*asked on January 10, 2008* -
## science

a person on roller skates stands next to a wall and pushes the wall with a force of 25 N.if the person has a mass of 50 kg what is the acceleration? a. zero b. 0.5 m/s/s c. 2 m/s/s d. 4 m/s/s

*asked on July 13, 2008* -
## ethnics

Do Asian Americans and Pacific Islanders belong to a single "Asian American" culture? please help

*asked on October 21, 2007* -
## Ethnics

What are three characteristics of Orientalism.

*asked on October 4, 2007* -
## Algebra2

Given the arithmetic sequence 11, 5, -1, ..., find .S(30)- on the bottom

*asked on May 12, 2020* -
## science

3.The vultures would fall to the ground if their feathers did not give them ... 1.The scope 2.The thrust 3.Gravity 4.The propulsi

*asked on April 15, 2020* -
## math

an icecream shop offers 5 different flavors of ice cream and 12 different toppings how many choices are possible for a single serving of icecream with one topping 18 22 46 60

*asked on March 3, 2020* -
## English

Write a composition which ends with " it was all a dream"

*asked on November 5, 2019* -
## Math

Decide whether the numbers are relatively prime. If not, find the greatest common factor. 19, 299

*asked on August 30, 2018* -
## Math, help please

You buy clothing at a sale. You buy sneakers at 2/3 of their original price of $60, a sweater at 7/10 of its original price of $35, and a jacket at 7/10 of its original price of $45. Answer each question and show all your work. a. How much money did you

*asked on January 28, 2018* -
## Math

Trying to solve an equations word problem and can't get the equation in order to solve it. please help. What should the equation be for....Todd wants to hang a picture that is 15 inches wide in the center of a wall that is 32 inches wide. How far from each

*asked on October 29, 2017* -
## chemistry

The chloride at 0, 272g of a sample was precipitated by the addition of 50.00 ml of AgNO3 0.1030 M. The titration of excess silver, it has spent 8.65 ml of KSCN 0.1260 M. Express the outcome of this analysis Percentage of MgCl2

*asked on October 13, 2017* -
## chemistry

In a solution of Fe²+ and Aluminum immersed in a solution of Al³+ knowing that aluminum is more reactive than iron, what metal form the anode?

*asked on October 9, 2017* -
## statistics

Suppose a multiple choice test has 20 questions with each question having 4 choices, only one of which is correct that is %25. suppose an unprepared student writes the answers, each time randomly picking on the 4 choices. what is the probability that the

*asked on July 18, 2017* -
## math

allison is making a 16 inch necklace. the first 41/4 inches are filled with red beads and 8 3/8 inches are filled with blue beads. how many inches are filled with beads?

*asked on February 21, 2017* -
## english

I have to write a metaphor on how someone felt after spending their summer vacation watching quiz shows and soap operas on tv. What would someone feel after that? All I need is the feeling, nothing more.

*asked on January 18, 2017* -
## math

A pancake recipe calls for 0.75 cups of flour.linda is making 5 batches.she already has 2.5 cups of flour. How many more cups does she need?

*asked on January 3, 2017* -
## Home economics

What is consumer education in economics

*asked on October 18, 2016* -
## Math

Assuming there are 4 weeks in a month, how many months are there in d days?

*asked on August 31, 2016* -
## Physics of ice skating

hello! so I know when learning to skate, you should position your skate at a 45 degree angle, but i'm not sure why. is it because if you just position them straight,the low friction of the ice won't allow you to move/ push forward? plus does the 45 angle

*asked on January 2, 2016* -
## Physics

When the motor in the figure below raises the m = 1010kg mass, it produces a tension of 1.04E+4N in the cable on the right side of the pulley. The pulley has a moment of inertia of 78.9kgm^2 and a radius of 0.736m. The cable rides over the pulley without

*asked on October 16, 2015* -
## algebra

Vic buys a car with 10000 miles on it . He drives 100 miles a week. Eva buys a car with 7000 miles on it she drives an average of 400 miles a week. How many miles will the cars have on them when the number of weeks is the same. m= 100w + 10000 m= 400w +

*asked on May 18, 2015* -
## Chemistry

A beam of light with a frequency of 7.61•1015 Hz hits the surface of the metal. What is the velocity of the electron ejected in m/s? (6 pts) How do you find the velocity based only off the frequency?

*asked on April 15, 2015* -
## Chemistry

In an alternate universe, electron energies in an atom are found to obey the following equation where n is the principle quantum number: E = 3.0 x 10^(-19) J * nm * (1/n^2) ..where n is the principle quantum number A gas discharge lamp, like the lamps used

*asked on April 15, 2015* -
## Chemistry

A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold frequency of the metal is

*asked on April 15, 2015* -
## Chemistry

A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold frequency of the metal is

*asked on April 15, 2015* -
## Chemistry

In an alternate universe, electron energies in an atom are found to obey the following equation where n is the principle quantum number: E = 3.0 x 10^(-19) J * nm * (1/n^2) ..where n is the principle quantum number A gas discharge lamp, like the lamps used

*asked on April 15, 2015* -
## Physics

Suppose we had a straight tunnel, through Earth's center, to a point on the opposite side of the planet, and used it to deliver mail to the other side. With what speed would our packages pass through Earth's center. So: ag = (GM)/R2 Mins = (4/3)πR3*ρ So,

*asked on April 4, 2015* -
## Physics

What is the ratio of the wight of a man when he is in a tunnel 1000 km below the surface of the Earth to his weight at the surface? ...I'm not sure how to proceed, not because I don't know how to do it, but because I have no idea how to come up with a(g)

*asked on April 4, 2015* -
## Physics

If you take a pendulum clock from Paris to Cayenne, French Guiana, it loses 2.5 min each day. If the period of a pendulum of given length is proportional to 1/sqrt(g), and if g = 980.9 cm/s^2 in Paris, what is g in Cayenne? ...Um...I'm not entirely sure

*asked on April 1, 2015* -
## Physics

So, "a uniform steel rod of length 1.20 meters and mass 6.40 kg has attached to each end a small ball of mass 1.06 kg. The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint." There's more to the question, but the

*asked on March 30, 2015* -
## Math

What is the inverse of 987x=1 (mod 11)? What I've done so far is: GCD(987, 11) 987 = 89 * 11 + 8 GCD(11, 8) 11 = 1 * 8 + 3 GCD(8,3) 8 = 2 * 3 + 2 GCD(3,2) 3 = 1 * 2 + 1 ...So basically, the GCD(987, 11) is 1. So... 1 = 3 - 2 = 3 - (8 - 2 * 3) = 3 - 8 + 2 *

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

A dog, weighing 10.0 lbs, is standing on a flatboat so that he is 20 ft from the shore. He walks 8.0 ft on the boat toward shore and then halts. The boat weighs 40 lb, and one can assume there is no friction between it and the water. How far is he from the

*asked on March 22, 2015* -
## Physics

So...the question is that a coil spring has a force constant of k = 4.0 lb/in. When the spring's axis is inclined at an angle 30 degrees form horizontal, a Weight = 2.0 oz ball is propelled to a height of 6.0 ft. By how much must the spring have been

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

A pendulum string has a length l = 4.0 ft. When the pendulum ball is released at 90 degrees to the vertical, it will swing down. A nail is located distance d below the point of suspension of the pendulum. Show that d must be at least 0.6l if the ball is to

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

A 2.0 lb block is given an initial speed of 4.0 ft/sec up an inclined plane starting from a point 2.0 feet from the bottom as measured along the plane. If the plane makes an angle (theta = 30 degrees) with the horizontal and the coefficient of friction is

*asked on March 12, 2015* -
## Math

When Mrs Lee was 44 years old, her son was twice her daughter's age. Mrs Lee would be twice her son's age when her daughter was 26 years old. How old would Mrs lee be when her daughter was 20 years old?

*asked on January 30, 2015* -
## math

Summers garden is rectangle.4m long &2m wide she wants to put a fence around it.the fence post should be 2 m apart.How many fence post will Summer needs?

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

Yancey collects plastic banks. He has three different banks: a pig, a cow, and a horse. How many ways can Yancey arrange his banks on a shelf

*asked on January 10, 2015* -
## Chemistry

Calculate the mass (in grams) of sugar, C12H22O11, in 142.4 mL of a 1.39 M solution of sugar. (atomic weights: C = 12.01, H = 1.008, O = 16.00)

*asked on November 7, 2014* -
## English

Read the following short paragraph. This paragraph is full of short, choppy sentences. Use your knowledge of sentence variety and prepositional phrases to improve the paragraph. Include all of the details in your revised version. The clouds seemed to loom

*asked on August 9, 2014* -
## math

how to convert 5/8 to a decimal

*asked on November 17, 2013* -
## Math

Is there anyway of checking to see if anyone else has posted a question that may help you without going through the entire list for your subject???????

*asked on May 30, 2013* -
## Math

If you roll a die 48 times and 8 of the rolls result in a "5," what empirical probability was observed for the event "5"? (Give your answer correct to three decimal places.)

*asked on May 30, 2013* -
## Math/Statistics

A and B are events defined on a sample space, with the given probabilities. Find P(A and B). (Give your answer correct to two decimal places.) P(A | B) = 0.43 and P(B) = 0.75

*asked on May 29, 2013* -
## Math/Statistics

Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24

*asked on May 29, 2013* -
## Math/Statistics

Consider the following. P(A) = 0.31 and P(B) = 0.41, and P(A and B) = 0.1271 (a) What is P(A | B)? (Give your answer correct to two decimal places.) (b) What is P(B | A)? (Give your answer correct to two decimal places.) (c) Are A and B independent? yes no

*asked on May 29, 2013* -
## Math/Statistics

Consider the following. P(A) = 0.31 and P(B) = 0.41, and P(A and B) = 0.1271 (a) What is P(A | B)? (Give your answer correct to two decimal places.) (b) What is P(B | A)? (Give your answer correct to two decimal places.) (c) Are A and B independent? yes no

*asked on May 28, 2013* -
## Math/Statistics

Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24

*asked on May 28, 2013* -
## 3rd Grade Identify polygons

Tim wants to make a polygon. He draws six straight line segments. Each line segment connects to two other line segments. Is Tim's shape a polygon? Explain.

*asked on January 23, 2013* -
## c++

The distance between two cities is 500 miles. Let us call these cities as CityA and CityB. Employees live in the CityA and travel to the CityB every day in the morning and come back in the evening on the same day except on Saturday and Sunday. They do not

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

Assume a perfectly elastic collision between a 916g bat and a 145g baseball. Initially, the ball was moving at 32 m/s toward the ball and afterward it's heading away at 40 m/s. Find bat's speed before and after collision.

*asked on October 10, 2012* -
## Math

Logan wants to determine the distance across the river from points B to C. If she is able to determine the measures given on the map using surveyors’ tools, what is the distance between points B and C? Round the answer to the nearest tenth of a foot

*asked on July 17, 2012* -
## trig

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)

*asked on February 8, 2012* -
## trig

Find sin t ,cos t and tan t when the terminal side of an angle of t radians passes through (2 , 7)

*asked on February 8, 2012* -
## trig

Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line y=x+4 on ,find the measure of theta in degrees.

*asked on February 8, 2012* -
## Math

The clothing stor had a sale for 75% off most of its shoes.Malik selected a pair of shoes that regulary sell for 80. What is the sale of Malik's new shoes.

*asked on February 6, 2012* -
## statistics

using excel find the variance of a sample of 30 observations selected randomly. Given that the median is 14.7, the mode is 11 and the coefficientof variation is 45%.

*asked on January 7, 2012* -
## math

If the adjacent vertices of a square ABCD are A ( -2 , 0 ) , find - The equation of the two diagonals AC and BD - The point of intersection O of the two diagonals AC and BD - The equation of the altitude from O to the side CD - The centroid of the triangle

*asked on December 27, 2011* -
## geomerty

two sides of a triangle have lengths 45 inches and 50 inches. How long can the third side be?

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

A car travelling at 27 m/s2 hits a wall with 48,600 N of force. What was the car's mass?

*asked on November 4, 2011* -
## Science

A 0.2 kg falcon hits a mouse with a force of 5 N. What was its acceleration?

*asked on November 4, 2011* -
## Science

The force of a 0.001 kg penny falling at 70 m/s2

*asked on November 4, 2011* -
## Science

The force of a 4 kg bowling ball to accelerate to 6 m/s2

*asked on November 4, 2011* -
## Science

Force of a 1500 kg rhino to accelerate to 4m/s2 How do I figure this out?

*asked on November 4, 2011* -
## math

The number of cases for a disease has reduced by half every 10 years: 1970 - 21,168 1980 - 10,584 1990 - 5,292 Assume N is the number of reported cases t years after 1970. Which is a good model for N(t)? a) 21,168 (2)^t b) 21,168 (1/2)^t c) 21,168

*asked on October 31, 2011* -
## programming

develop a program that converts inches to centimeters(1 inch=2.54 cm). The program when runs should prompt the user to enter an inch value

*asked on October 16, 2011* -
## AP US History

Did Thomas Jefferson change his policy after becoming president and how? (i.e. he was for strict interpretation of the constitution and etc.) Thank you :)

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

the cost of living last year went up 3% fortunately alice swanson got a 3% rais in her salery from last year. This year she is earning $22,660 how much did she make last year

*asked on November 22, 2010* -
## algebra

don williams invested some money st 9% simple interest. At the end of the year, the total amount of his original principal and the interest was $6.540. How much did he originally invest

*asked on November 22, 2010* -
## chemsitry

c. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following values: The standard enthalpy of formation of gaseous carbon dioxide is

*asked on October 23, 2010* -
## chemsitry

b. The decomposition reaction may be written in this form: C12O36H20N12 (s) → 12CO2 (g) + O2 (g) + 6N2 (g) + 10H2O (l) In the enthalpy diagram below, the arrows represent standard enthalpy reactions. (3) denotes the standard enthalpy of decomposition of

*asked on October 23, 2010* -
## essay

can you help me to do my essay?

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

How many uranium atoms are there in 8.2 g of pure uranium? The mass of one uranium atom is 4 × 10^−26 kg.

*asked on September 29, 2010* -
## dress making

I need help with Dress making (sewing machines) 04201501 and (introduction to sewing) 04201400. If anybody can help, thank you....

*asked on June 1, 2010* -
## Math 032 Algebra

how to get the answer 16 1/9 2 3/15

*asked on May 18, 2010* -
## English

Can anyone tell me a quote about Myrtle in the Great Gatsby which proves: She is shown to be an attention seeker who tries to make an appearance of being in the upper class by criticizing the lower classes.

*asked on March 22, 2010* -
## Math

Two cards are drawn at random from a standard deck of 52 cards. What is the probability that both cards are queens?

*asked on March 10, 2010* -
## Math

Find the first three iterates of the function f(x)=x^2-2,if the initial value is -2.

*asked on March 10, 2010* -
## statistics

survey revealed two percent of students did not select stat. for biz. suppose we select a sample of 10 students. -what is the probability that 3 students selected stat. for biz? -how many students would you expect to select stat.for biz?

*asked on March 8, 2010*

## Pages

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