# Posts by Lisa

Total # Posts: 3,425

**Quantitative methods**

the mean and standard deviation of the grades of 500 students who took an maths exam were 69 and 7 respectively. if the grades have a bell shaped distribution, how many of these students received a grade of more than 83 marks?

**statistics**

the mean and the standard deviation of the wages of 1000 factory workers are $20,600 and $2,400 respectively. if a worker's annual wage is $20,000, find and interpret the worker's sample z-score.

**statistics**

Suppose that M and S are two events such that; P(S)=4/32, P(MnS)==3/32 and P(MuS) = 25/32. evaluate P(M)

**Quantitative methods**

the mean and standard deviation of the grades of 500 students who took an maths exam were 69 and 7 respectively. if the grades have a bell shaped distribution, how many of these students received a grade of more than 83 marks?

**math**

A person hired a firm to build a CB radio tower. The firm charges $100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. That is, the next 10 feet will cost $125, the next 10 feet will cost $...

**Chemistry**

If 80.0 grams of methane were reacted with 368 grams of oxygen, how many grams of water would be formed (find limiter first).

**Chemistry**

A student reacts 20.0 grams of sodium hydroxide with hydrochloric acid and obtains 25.0 grams of sodium chloride. What is the percent yield?

**Early Childhood Education**

The question that my friend have is that federal laws that provided services for people with disabilities were first passed in the: a. 1990s. b. 1970s. c. 1960s. d. 1980s. The first law that guaranteed that all children would receive a free and appropriate education is call ...

**Early Childhood Education**

Thats not a nice question to ask. Every one needs help.

**Algebra**

36^2-36x+9=0

**english**

Explain what is wrong with the following sentence and make any corrections if necessary: “Neither the mouse nor the rats could find its way through the maze.”

**english**

obesity in middle schools

**physics**

george mason

**math**

write an expression for the area of a triangle with a base of b inches and a hei9ght of 12 inches

**physics**

find the mean free path of the molecule of oxygen at normal pressure, if the coefficient of diffusion of oxygen at the same pressure and temperature of 0 ° C is equal to 0,19 cm ² / sec. найти средню&#...

**physics**

determine the most probable velocity of the gas molecules, whose density is ρ = 0,35 kg / m³ at a pressure of ρ = 40 kPa.

**English - Native speakers**

the correct way is: Are you going to apply for a job soon or are you going to apply for any job soon. for example in the case where you can use to: Did you apply to any university yet?

**physics**

определить кинетическую энергию, приходящую...

**physics**

determine the kinetic energy of falling by an average of one degree of freedom of the nitrogen molecule at temperature T = 1000 K, as well as the kinetic energy of rotational motion.

**Science**

They are important to the survival of humans because they have abiotic compounds such as Oxygen, water, nutrients, light, and soil which humans and other biotic compounds need to survive.

**english**

Could you take out some words? Because you have two definitions of displacement, I would take out the first one. That is a really lengthy sentence.

**english**

Say if you were to read a book...that made no sense to you, what would you say to the author? Something that "I" would say, would be negative regarding the book.

**physics (Science)**

Speed = Distance divided by Time 27 centimeters is your distance 10 seconds is your time 27/10 = ?

**Mcdonalds**

Except the P/E ratio right? That should be lower.

**Mcdonalds**

How do you determine which one is financially better? If the Profit margin is high that indicates its better? High sales --better earnings per share - higher So all of them have to be high?

**Mcdonalds**

Ok. Between KFC and Mcdonalds, which one would you say is financially better? Would it be Mcdonalds, because its nonstop, people go there everyday.

**Mcdonalds**

What company is related to mcdonalds?

**english**

Obviously, the whole essay would not seem to make sense then. That would just confuse those readers, and they’d be getting wrong information. Therefore, their reaction is justified because they want to be able to read an essay that has proper topic sentences and ...

**Science**

The force would get weaker.

**trig**

In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of the sector to the nearest hundredth of a square inch.

**English**

My ? is what would be a good thesis statement for me being against America accommodating the languages of immigrants that they should learn English before being eligible for citizenship. U no I have to do the thesis statement along with 2-3 topic sentences. Please help me I ...

**English**

I am writing an argumentative essay on Why I think America should not have to accommodate the languages of immigrants that come to America that they should learn English before being eligible to become a US citizen.

**Chemistry**

the type of reaction in a voltaic cell is best described as 1.spontaneous oxidation reaction only 2.nonspontaneous oxidation reaction only 3.spontaneous oxidation-reduction reaction 4.nonspontaneous oxidation-reduction reaction i know its spontaneous, but what else?

**a and p 2**

What is the most dramatic metabolic change that occurs with fasting?

**Physics (please help!!)**

before opening her chute, what force of air resistance will she encounter when she reaches terminal velocity

**business**

If an audience is opposed to what you have to say or resistant to a change you are suggesting, a good approach is to

**business**

which of the following is NOT one of the three steps to take when audience benefits are hard to identify or develop

**Math**

Thank you so much! This definitely helped! =)

**Math**

A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?

**Language Arts**

Neither forward could be stopped. These two lit up the scoreboard with 54 points. In fact, the Rockets scored so many points that the scoreboard shorted out trying to keep up. The Rockets were just too hot to handle. The best play of the game came in the fourth quarter. Stokes...

**Language Arts**

can you identify all the figurative language in the paragraph?

**Language Arts**

The Fairfield Rockets were true to their name last night. They blasted off early in the first quarter and didn't slow down until the final buzzer in the fourth.

**Math**

A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?

**physicals science**

20 grams

**Grammar**

If you want to wait, Ms Hobson will meet with you in a few minutes. What is the infinitive "to wait" in this sentence? Is it a noun, adjective or an adverb?

**Physics**

What would be the orbital speed and period of a satellite in orbit 0.88 multiplied by 108 m above the Earth? Orbital Speed___m/s Period___s Thanks!

**inequality**

Janice and Leonard together would like to save more than $3,500. They have saved $425 saved so far. Janice can save $120 more than twice what Leonard can save each month. How much money will they each need to save to reach their goal?

**finance**

What makes up a company's capital structure? Explain the purpose of determining the weighted average cost of capital for a company.

**writing**

papers that are inadequately developed often contain repetition and wordy generalities

**psycology**

If psychological needs have presumptive brain or physiological correlates, are they still psychological needs? Why or why not?

**stats**

in major league baseball there are two leagues that compete to make the play offs the american league has three divisions the east and cental divisions with 5 teams each ad the west division with 4 teams the national league is made up of the east and west divisions which have ...

**math**

14/51 * 3/4

**MATH**

6.4/84

**CHM 101**

The food dyes contain propylene glycol in addition to the dyes and water. The candy shells contain sucrose, corn syrup, corn starch and gum acacia. Do you think this affects the movement of the dyes on the chromatography paper?

**chemistry**

Calculate the mass of kl in grams required to prepare 5.00x10power 2mL of 2.80M solution

**English, please help**

Hello, i just wanted to first ask is this free>?

**organic bio chemistry**

how many mL of a 0.20M KOH solution is needed to neutralize 25 mL of 0.25 M H2SO4?

**Scocial Studies**

Who was the leader of China during WW2?

**Chemistry**

how much sulfur dioxide is needed to decrease the pH of 1L of water from 9.8 to 8.0?

**Science**

What is a Wordsplash?

**math**

Complete the following: (2 points per answer) Celestial Body Equatorial Diameter (km) Scientific Notation Earth 12,700 Moon 3.48 X 103 Sun 1,390,000 Jupiter 1.34 X 105 Mercury 4800 2. Theater ticket prices (in dollars) x years after 1997 are described by the polynomial -0....

**Chemistry**

1.278 mL of water at 10°C was placed in a 3.0 L container that was sealed and evacuated. Then, 3440 J of heat was added to the water. Determine the pressure inside the container after heating. (Assume all of the heat goes into the water.) d (H2O(s)) 1.00 g/cm3 Csp(H2O(s)) ...

**Psychology**

?? plz

**Psychology**

"It all happened for the best," "I would never have left that dreadful job if they had not laid me off," and "Yes, I miss mom's home cooking, but I am going to school and building my future." These are examples of: (Points: 5) avoidant coping...

**chemistry**

no its Charles' Law

**chemistry**

A high-altitude balloon contains 97.5 L of helium gas at 95.8 kPa. What is the volume when the balloon rises to an altitude where the pressure is only 21.5 kPa? (Assume that the temperature remains constant.)

**geometry**

A right triangle because 6^2 + 8^2 = 100 and the square root of 100 is 10 :)

**Calculus**

find the inflection points of x^4+5x^3-9x^2+6

**chemistry**

It's supposed to be 105 mL of H2O. SH of water: 4.18 J/g deg C SH of steel: 0.452 J/g deg C

**3rd grade math**

Ramon weighs 46 kilograms. Trentweighs 37,000 grams. Who weighs more<

**Chemistry**

How many moles are there in 80.0g of C2H5Cl? leave answer in significant figures. please help and explain how to get the answer.

**Psychology**

I thinks its A

**Psychology**

Evaluations of a particular belief, person, object, or idea describe a person’s: (Points: 5) attitudes. motivation. predispositions. biases. was thinking D im not sure can someone help please?

**Calculus**

Find the tangent approximation for sqrt(5+x) near 3

**Psychology**

thank you very much

**Psychology**

Carl Jung’s idea of the collective unconscious states that we share: (Points: 5) inherited universal ideas, wishes, and memories. common learning experiences in childhood or infancy. tendencies to sacrifice ourselves individually for the group. ideas that arise from, and ...

**accounting**

a mutual fund has total assets of $57000000 and liabilities of $ 8550000. if 15960000 shares are outstanding, what is the net asset value of the fund?

**Calculus**

Find the slope of the tangent line to the ellipse (x^2)/4 + (y^2)/9 = 1 at the point (x,y)

**Calc**

find the slope of the tangent to the curve: y^2=x^3/xy

**Psychology**

ok thanks

**Psychology**

can i get some help please?

**Psychology**

"I just can't make myself study ahead for a test. I work better under pressure. Perhaps it is the fear associated with waiting until the last minute that gets me going." This approach to motivation is best explained by: (Points: 5) incentive approaches. drive-...

**maths**

Michelle is making a scale drawing of a building. The scale for the drawing is 1 inch = 6 feet. The height of the building in the drawing is 7 1/4 inches. Determine the height of the actual building.

**Math**

Joe has a collection of nickels and dimes that is worth $6.05 if the number of dimes was double and the number of nickels was decreased by 10 the value of the coins would be $9.85 how many nickels and dimes does he have?

**algebra**

Solve using qaudractic formula.Then use a calculator to approximate to three decimal places, the solution as rational numbers. X^2-4x+1=0

**algebra**

Solve using qaudractic formula.Then use a calculator to approximate to three decimal places, the onlution as rational numbers. X^2-4x+1=0

**Physics**

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 56 km/h (35mph ). A new model of mass 1900 kg takes 0.15 s from the time of impact until it is brought to rest. 1. Calculate ...

**A U**

Answers: 1:4 2:4 3:4 4:2 5:1 6:3 7:4 8:4 9:1 10:4 11:3 12:1 13:2 14:4 15:3 16:2 17:3 18:3 19:4 20:3 21:1 22:2 23:2 24:3 25:2

**A U**

<11{1[4(17)17]}> Mrs. Orlof teaches two history classes, one in the morning and one in the afternoon. Yesterday she gave the same test to both classes. Anyone who failed the test must take a retest. Since a greater percentage of students who took the morning test failed ...

**algebra**

completetly factors the followin expression 4a^2-12ab+9b^2

**statistics**

It is well known that the heights of individual American men are normally distributed with mean 70 inches and standard deviation 2.8 inches. The Central Limit Theorem states that if n men are randomly chosen, then their average height will also be normally distributed with ...

**chem**

which of the following is insoluble (1)calcium chloride (2)ammonium phosphate (3)barium sulfate (4)potassium chromate

**Geometry**

If the perimeter of the first triangle is 21 m, what is the perimeter of the second?

**Science**

in a true solution, the dissolved particles (1)are visible to the eye (2)will settle out on standing (3)are always solids (4)cannot be removed by filtration

**Math**

The following is a list of 11 measurements: -2,82,87,-1,-51,-2,53,87,-20,32,35 Suppose that these 11 measurements are respectively labeled . (Thus, is labeled , is labeled , and so on.) Round your answer to at least two decimal places.

**pre-algebra-is my answer right**

Today only, a desk is being sold at a 27% discount. The sale price is $219.00 . What was the price yesterday? Is it $300.00

**Thanks**

Thank You

**pre-algebra-is my answer right**

Graph -3x+4 My points are at (0,4) and (1,1)

**statisics**

A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.

**statisics**

I got 0.0001500