# Posts by sandra

Total # Posts: 1,148

math
7x9=63

chemistry
What is the approximate thermal energy in kJ/mol of molecules at 275° C

applied statistics
Discuss how the General Linear Model assigns the optimal “weights” to predictor variables that allow us to maximize prediction accuracy. How are discriminant functions the optimal weighted linear composites for predicting “membership” regarding the ...

Science
If the moon rotated on its axis just as quickly as Earth's, would we always see the same side of the moon? Explain. -thanks, Sandra

Office Management
One taxicab charges 75 cents for the first quarter-mile and 15 cents for each additional mile. The competing taxi company charges \$1.00 for the first quarter-mile and 10 cents for each additional mile. 1. what distance would produce the same fare for the two taxi companies? 2...

Science

Science
when comparing the force that is required to climb a mountain walking up a trail that slopes gently upward to the top verses getting there by scaling a sheer vertical face, which of the following is true? (a) you use more force for a giving movement on the walk than on the ...

math
a small mail order company earns a 15% profit on all sales. if the company earned \$5250 one month, how much were the total sales.?

ap chemisrty
Kp for the following reaction is 0.16 at 25°C. 2 NOBr(g) 2 NO(g) + Br2(g) The enthalpy change for the reaction at standard conditions is +16.3 kJ. Predict the effect of the following changes on the position of the equilibrium; that is, state which way the equilibrium will ...

math
width=w length=4w P=2(l+w) =2(4w+w) =10w

math
Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that her answer is not correct?

Chem 262
What solvents would you use to isolate these compounds? Malonic Acid Salicylic acid Ethyl4-aminobenzoate

Algebra
I cant write the sign for square root so I will just write it out. The problem says to simplify square root 5w^8v square root 20xu^2 I don't know how to figure out this problem.

ap chemisrty
When heated, cyclopropane is converted to propene. Rate constants for this reaction at 470°C and 510°C are k = 1.10 10-4 s-1 and k = 1.02 10-3 s-1, respectively. Determine the activation energy, Ea, from these data.

chemistry
he decomposition of nitrogen dioxide at a high temperature is second order in this reactant. NO2(g) NO(g) + 1/2 O2(g) The rate constant for this reaction is 3.40 L/mol·min. Determine the time needed for the concentration of NO2 to decrease from 2.30 mol/L to 1.30 mol/L.

science
Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?

A bag contains 3 green marbles and 6 blue marbles. What is the probability of drawing a blue marble, then another blue marble, then a green marble, replacing the marble after each draw?

economics
Suppose the USA and Canada are considering to trade. Assume there are only two goods in the economy: wheat and corn. The table below illustrates what each country can produce in a given year. Wheat Corn USA 4 2 Canada 5 8 In this case, which country should produce wheat? Why? ...

world issues
Identify at least two issues in developing countries that make changing to democracy easier or more difficult. Provide at least one real world example of one of the issues that you identify.

Philosophy
What ideas and events in Europe influence philosophy in the USA. How are these philosophies similar and different?

algebra
sorry about the mix up of 2001 and 2002, but the process is still the same

algebra
the difference between 1995 and 2001 is 6 years, so you add 6 to 73.7 and you get 0.6t+73.7, that's the first set of answers. Next, you replace the t with the 11 to represent the difference between the next set of years (1995 to 2006) so the next set of answers is E(11)= ...

practical nurse
in a 150 words state how you can contribute quality service to health care

algebra
it john 4 hours to mow a lawn it takes maria 3 hours to mow the same lawn, how long would it take if they worked together?

C Chemisty
What mass of hyudrogen peroxide should result when 1.50 g of barium peroxide is reacted with 25.0 mL of 0.50 M of hydrochloric acid?

Algebra
If Dale can paint a room in 5 hours alone and Chip can paint the same room in 7 hours alone. How long would it take them together to pain the room?

math
what type of math problems exemplify the different purposes of variable, and in what way do these different uses of variable can be confusing?

math
P=4xL or P=4L

statistics
given variables list them as independent (x) or as a dependent (y) I weight of child; prescription dosage II monthly commision; monthly sales II ability to concerntrate; level of fatique IV crop yield; rainfall

the president and the bureaucracy
yes there are acts of congress, regulatory rulings, court rulings, the will of the people

the president and the bureaucracy
legally, the bureaucracy derives the general authority for its programs from

Algebra
5x+2y=-11, 7x-3y=13, find x and y

math
How would I setup the equation for the perimeter and area of a similar (6inch width, and 8 inch length)rectangle that is increased by a ratio of 1:n?

Thank you I came to the same conclusion I just wanted to see if I was going in the right direction

using ratio 1:2 find the perimeter of rectangle that has a width of 6 inches and a length of 8 inches? need answer asap

College Chemistry
Stuck on plugging info into formula, please show set up-At 10 degrees C carbon dioide gas has volume of 25.5 mL under pressure of 758 mmHg, what would volume of CO2 be at STP?

Chemistry
Dr. Bob get the use PV=nRT just stuck on setting up the problem help!

Chemistry
Amber, Too funny i have this same question for ec College Chem at Terra! In book page 303, 35 b. Answer back of text lol!!!

Chemistry
If 20.0 g of N2 has a volume of 4.00 L and a pressure of 6.0 atm, what is its temperature?

Chemistry
A mixture of hydrogen and oxygen gas has pressure of 1.60 atm. Partial pressure of oxygen is 304 mmHg atm, what is the partial pressure of hydrogen?

chemistry
what is the net ionic equation for manganese sulfide and hydrobromic acid?

in the order of operations equation 8-(24/8)^2 I Alex answered with 24/8= 3 3^2 = 9 8 - 9 = answer You cannot subtract 9 from 8. So how do you get the answer?

how do you solve the math order of operations problem 8-(24/8)^2

Algebra
Help please-I'm doing something wrong- Solve 8x^2 + 6x + 5 = 0 I'm doing square roots and all the steps but it's not working out I come up with -0.38 + 0.5 and -0.38 - 0.5 But it's not right when I go to put it back in. Could you please show the steps-these ...

what major landform is west of the west amazon basin?

Physics
A disconcerted dog of a mass 7.80 kg is sliding down a frictionless plank which is inclined at an angle of 48.0 degrees to the horizontal. Calculate the force which accelerates the dog down the plank.

french
what does arrondis le nombre 160 795 a la dizaine de mille pres mean ?? and answer plzz

Math
25,000 @ 6% 15,000 @ 7%

Calculate the simple interest and maturity valve for the following problems. Round to the nearest cent as needed. 18,000,4 1/2%,18mo.

math
sixty seven thousand or six hundred seventy hundreds

Math
Rewrite rational exponent 3sqrt22

COM156
Identify three challenges that may arise when writing a paper. Explain the strategies you will use to overcome those challenges.

Statistics
You are shown a coin that its owner says is fair in the sense that it will produce the same number of heads and tails when flipped a very large number of times. a. Describe an experiment to test this claim. b. What is the population in your experiment? c. What is the parameter...

statistics
the quality control inspector of a production plant will reject a batch of syringes it two or more defective syringes are found in a random sample of ten syringes taken from the batch. suppose the batch contains 2% defective syringes. What is the probability that the batch ...

algebra
1/16 basically you just solve 4^-2

hardware
What types of computer hardware would make your work life more efficient?

COM 156
Identify three challenges that might arise when writing a paper. Explain the strategies you will use to overcome those challenges.

statistics
Why am I stuck? How do I figure I must be really stressed because I cannot figure this out. you exmple 9.408^2 =88.51046? How do you get it? I have squared 9.408 on calculator and get 3.08 what am I missing?

geometry
in diagram below ab parallel to cd what is the value of x

arithmetic
what is the decimal of 7/20 how do u figure it out i need step by step break down

psychology
How might a person’s self-guides affect his or her perspective of the world?

college psychology
HELP WTHE A THESIS STATEMENT ABOUT MY PAST PRESENT FUTURE

yes thank you

The purose of loaded words in advertisement is to 1 create an image 2 compare two unlike things 3 influence the reader 4 illustrate bias

king high school
in poetry and ficition, the main reason for using vivid words is to 1 explain an idea 2 create a mental image 3 keep the reader gussing 4 illustrate the writer's bias

personal finance
A.After a protracted legal case, Joe won a settlement that will pay him \$11,000 each year at the end of the year for the next ten years. If the market interest rates are currently 5%, exactly how much should the court invest today, assuming end of year payments, so there will ...

physics
a car of height H could negotiate a bend on a banked road of certain degree and of radius r with a maximum speed. is it possible for a truck of height 3H to negotiate that same bend with same speed at that same angle.show proof to back the condition

chem
The label on a one-pint bottle of water lists the following components. If the density is the same as pure water and you drink 2 bottles of water in one day, how many milligrams of each component will you obtain? calcium 28 ppm, fluoride 9ppm, magnesium 14 ppm, potassium3.0ppm...

history
how many children work at factories and how many get hurt

How would I put this question into power point presentation.

statistics
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you ...

math
rate in simplest form 261 miles in 29 minutes

math
surface area formula for room measurements 23ft 6in length, width 14ft 8in and height 30 feet

social studies: psychology
A conditioned response is one that occurs without regard to the original conditioned stimulus. It is now a learned behavior. A. a gun-shy dog cowers when he sees a shotgun would be the best answer because the dog is reacting to the gun in anticipation of it doing something ...

accounting
is it 1200 loss?

accounting
Bonds Payable has a balance of \$900,000 and Premium on Bonds Payable has a balance of \$10,000. If the issuing corporation redeems the bonds at 103, what is the amount of gain or loss on redemption?

accounting
Bonds Payable has a balance of \$900,000 and Premium on Bonds Payable has a balance of \$10,000. If the issuing corporation redeems the bonds at 103, what is the amount of gain or loss on redemption?

Poeple who settled the west

Financial Management
Debreu Beverages has an optimal capital structure that is 50% common equity,40% debt, 10% preferred stock. Debreu's pretax cost of equity is 12%, pretax cost of preferred equity is 7%, pretax cost of debt is also 7%. If the corporate tax rate is 35%. What is the weighted ...

Financial Management
A 10 year bond pays 11% interest on a \$1000 face value annually. If it currently sells for \$1,195, What is its approximate yield to maturity? a)9.33% b)7.94% c)12.66% d)8.10%

Financial Management
A firm's stock is selling for \$85, Dividend yield=5%. A 7% growth rate is expected for the common stock. The firm's tax rate is 32%. (question) What is the firm's cost of retained earnings? a)8.16% b)12.00% c)12.35% d)cannot be determined

physics
A 50 g ball of clay traveling east at 3.5 m/s collides and sticks together with a 50 g ball of clay traveling north at 2.0 m/s. What is the speed of the resulting ball of clay?

physics
An 75 kg quarterback jumps straight up in the air right before throwing a 0.43 kg football horizontally at 11 m/s. How fast will he be moving backward just after releasing the ball?

college,stats/ PLZ HELP:( need it within nxt 6hrs
never mind i got it lol

college,stats/ PLZ HELP:( need it within nxt 6hrs
Among Canadian households, 24% have telephone answering machines. If a telemarketing company contacts 2500 households find the probability that between 625 and 650 households, inclusive, have answering machines.

management
What steps would you recommend your manager take to implement the planning technique in scenario planning

Physics
Would the answer be b.. What I did was figured out the relationship between KE and speed. If KE quadruples, speed would only double. I am not sure about the next step though, I just used the following equation: mvr = nk; this gives me that r and v are inversely related so if v...

Physics
In the absence of external torques, the angular momentum of a system is conserved. An artificial satellite orbiting the Earth quadruples its kinetic energy. Assuming no external torques act on the system, the radius of the orbit will ... a. Decrease by a factor of 4 b. ...

Physics
The allowed orbits for the electron around the nucleus of the hydrogen atom are explained by de Broglie as ... a. Quantized values for the total energy of the electron in the atom b. Quantized values for the angular momentum of the electron in the atom c. Standing waves for ...

Physics
You meet a person with prescription glasses of +0.55 dpt. What is the near point of this person? Express the result as a positive number! Hint: the near point of a healthy person is 25 cm. An object placed at this distance will form an image at the near point of the person.

Physics
The refractive index of a material is different for different wavelengths and colours of light. For most materials in the visible range of the electromagnetic spectrum, shorter wavelengths have larger refractive index compared to longer wavelengths. The effect of this on ...

Physics
A small fish is inside a spherical bowl filled with water (n=1.33). The bowl has a diameter of 30cm and the fish is at a distance of 5cm from the surface that separates water and air (ignore the effects of the glass of the bowl). The image of the fish is ... a. Real (forms in...

social studies
How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course ofthe 20th century?

MARIJUANA AND PRESCRIPTION DRUGS OXYCONDONE
WRITE AND INTRODUCTION AND CONCLUSION ON MARIJUANA AND PRESCRIPTION DRUG OXYCODONE

HCA220
How does blood clotting, immune response, allergic and hormone release interelate?

Physics
I don't know if this might help to visualize: A's loop follows the way the greek letter gamma makes a loop, while B 's loop is in the shape of an upside down omega( Ω )...

Physics
Consider the current-carrying wires in the figure. I can try to describe the figure here.. - Diagram A has the wire coming from the left, it forms a loop in the centre in a clockwise direction and leaves going to the right. - Diagram B has the wire also coming from the left, ...

cjs 230
Isn;t true that back in the 1700's and `800's rehilitation was nabuse to the inmates?

4gr math
School

heath
what is one strenght you see in the current U.S heath system

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