Tuesday
July 22, 2014

Posts by Betty


Total # Posts: 305

Math
How do I simplify -4(-5x-u)-2(3u-2x)

Math
what is -4 (-w+4x-2)?

Math
what is 5 - / 8 6

statistics
in a positive skewed distrubtion with a mean (average) of 100 and median of 90 is What?

Stats
Need help finding the area under the normal curve between z = -1.0 and z = -2.0?

chemistry
I don't know I copied the question word for word. He wants to know what was produced and percentage changes. I'm sorry

chemistry
There are two different oxides of copper produced as a result of this reaction. They are copper(I) and copper(II) oxide. If copper is changed to copper(I) oxide the percentage changed in mass is 12%. If copper is changed to copper(II) oxide the percentage change in mass is 25%...

math
3/8 of a box contains 18 crackers how many crackers are in a box

Statistics
If a company’s total fixed costs increased by $20,000 and its contribution margin decreased by $12,000, net income would be?

math
3x+2x+y+2y

physics
A 45.4 kg sign is hanging in two wires as illustrated below. If angle A is 53.5 degrees and angle B is 29.6 degrees, what is the tension in the left wire? Give your answer in newtons

Math
is zero

math
A die is tossed twice. What is the probability of obtaining 6 dots both times?

statistics
A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?

algebra 2
if a system of equations has no solution then it is what?

fin
As part of a new labor contract, Acme has agreed to make a one-time contribution of Euros 1,000,000 to the construction of a new physical fitness facility for its employees. This amount will be placed in an account earning E% (E = the fifth digit of SUN). When the account grow...

business
Access: When importing and linking data, what program is used to store data and what program is used to analyze it?

geometry
A flagpole has a height of 10 yards. It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top and attached to the ground at a point that is 8 yards from the base of the pole. Find the total number of feet of cable that wi...

math
How do I factor non-traditional math problems that contain symbols? The examples given were: $q + $8 - $~ and 7* - x* + 2*.

anatomy
the lungs are lateral to the heart?

algebra
A parallelogram is 22 inches long and 14 inches wide. How do you find the height of the parallelogram? How do you find the area of the parallelogram ?

Algebra, HELP!
SOLVE FOR p: 5T = 6D + 6pm

Algebra
Got it! Y= x(x-2)

Algebra
What is the rule for the function x= 4, 5, 6, 7, 8 y= 8, 15, 24, 35, 48

Math
Sam is making 3 picture frames with dimensions seven and seven-eights and five and three quarters. What length of wood does he need for all 3 picture frames? Please answer as soon as possible; need it for tomorrow. Thanks

life orientation
recommendations on how to address pollution

Algebra
X^2(y-7)-14x(y-7)+45(y-7)

Statistics and Probability
Why is a normal distribution called "normal"?

Statistics and Probability
Why is a normal distribution called "normal"?

biology
−C−H−− −N−−−H −O−H−−

Math Word Problem
Tristen mixes nuts that cost $2.00 per pond with nuts that cost $4.00 per pound. He buys triple as much of the $2.00 per pound nut than he buys of the $4.00 per pound nut. If he spent a total of $32.00, how many pounds of the $2.00 per pound nut did he buy?

MATH
A camping store put in an order for flashlights and sleeping bags. The number of flashlights ordered was 3 times the number of sleeping bags. The flashlights cost $12.00 each, and the sleeping bags cost $45.00 each. If the total cost for the flashlights and the sleeping bags w...

Statistics- HELP!
2. The Rathburn Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electric contractors purchase wire from Rathburn annually. Rathburn's director of marketing wants to determine electric contractors...

mATH
First graders who misbehave in school may be more likely to be regular smokers as young adults according to a new study presented in the July 2004 issue of the American Journal of Epidemiology. After following a group of U.S. first graders for 15 years, it was found that among...

Probability Help!!!
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

Math-Statistics
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

Math Probability
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

Statistics
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

Statistics
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

Probability
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

Probability
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

Probability
An Adviser has 9 products he wants to tell a client about, but only has time to tell him about 4. How many different ways can he give the details on 4 different products to the customer?

Probability
A woman at the mall sees flats, 2’heels, and 3’ heels. The shoes come in two shades of beige(light and dark) and black. What is the probability that she will pick the following combinations? shoe has a heel and black- no heal and beige shoe has a heel and is beige

Venn Diagrams
P(Z)= .40, P(Y)=.30, P(Z ⋃Y)=.58 Find the following: P(Z’ ⋂Z’) P(Z’⋃ Y’) P(Z’⋃ Y) P(Z⋂ Y’)

Statistics
An Adviser has 9 products he wants to tell a client about, but only has time to tell him about 4. How many different ways can he give the details on 4 different products to the customer?

Math
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

Trigonometry
What is the period and asymptote in y= tan(2x-pi)

trigonometry
what is the graph of y= arccos(x-2)

trigonometry
what is the graph of y=sec(x+pi/2)

trigonometry
what is the graph of y= tan(2x-pi)

trigonometry
what is the graph of y= cos2(x-pi)+2

trigonometry
What is the graph of y= 5sin1/2(x+pi)-1

sociology cultural
What is a particular passion or talent that you possess which was never truly appreciated by teachers in your education?

Physics
A +2 uC and a +10 uC are 3cm apart a) Find the electrostatic force between the charges b) If the charges are brought together and touched, what would be the charge on each one? c) These spheres are then moved 3 cm apart. What would be the force between them?

Earlychilodhood education
a) Say that again slowly.

algebra 1
Transitive

math
please graph 4x^2/(x^3-1) and show asymptotes

physics
A flexible metal sheet of length 6.0cm, breadth 5.00cm and the average thickness of 0.883cm has a mass of 23.00g. calculate the density of the metal

Statistic
The amount of time it takes to take your order at the local Whaters restaurant has a population mean m of 3.1 minutes and a standard deviation s of 0.40 minutes. If you select a random sample of 16 customers: Q-3a: What is the probability that the mean time spent per customer ...

Math
How much tolnaftate powder is in 7% Eucerin cream 85g? _______________

Chemistry
If you add 16g of sacicylic acid to 84g of an ointment base, what is the final concentration (w/w) the product? _______

Pharmacy Technician
If you diluted 95ml of a 7% benzocaine lotion to 5%, how much could you produce? _________

Pharmacy Technician
35ml of active ingredient is mixed with distilled water to total 300ml. What is the final concentration (v/v)? ________

Pharmacy Math
If you diluted 95ml of a 7% benzocaine lotion to 5% how much could you produce? ___

Pharmacy Math
How much stock solution of hydrogen peroxide 8% will you need to make 320ml of hydrogen peroxide 2% solution? ____

Pharmacy Math
35ml of active ingredient is mixed with distilled water to total 300ml. What is the final concentration (v/v)? ____

Pharmacy Math
15g of potassium chloride is diluted in 2L of sterile water for injection. What is the final perccent strength (w/v)? ____

Pharmacy Math
320ml of active ingredient is added to 680ml of an alcohol based solution. What is the final strength (v/v)? ___

Pharmacy Math
I have posted correctly

Pharmacy Math
Drysol contains 6g of aluminum chloride hexahydrate in 42ml of an alcohol base. What is the final strength of Drysol?____

Pharmacy Math
75g of active agreement powder is mixed with 300 ml normal saline. What is the final percent strength(w/V)? ____________

Pharmacy Technician
How much cholestryramine powder is in 3% cholestyramine/Aquaphor cream 45g? _________

chemistry
If you add 8g of benzoic acid to 92g of an ointment base, what is final concentration (w/w) the product? _______________

cild care
Which one of the following statements about childcare centers is correct? A. Childcare centers can't get a license unless they apply to enroll in a QRIS system. B. Childcare centers are automatically enrolled in a QRIS system when they apply to be licensed. C. Childcare ce...

Physics
The average human has a density of 950 kg/m3 after inhaling and 1018 kg/m3 after exhaling. (a) Without making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a lake with a water density of about 1230 kg/m3) in each of these...

HEALTH
The relationship between law and ethics dictates that anything lawful is ethical and anything ethical is therefore always legal? Agree???? What is the rationale behind your answer?

Geology
What can be done to help society improve its understanding of the world's natural resources and how to utilize them? Why?

Life orientation
recommendations on how to address pollution

life orientation
five ways in which you critically discuss how cancer disfase behaviour impact on the teenager

psychology
What is the relationship between z-scores and percentages?

alegbra
on his mathematics test, carlos has 20 correct out of 25 problems

science
If I begin with 100 atoms, how many atoms will be left of carbon 12 in 17,190 yrs if the half life of C12 is 5,730 yrs?

english paragraph 8 - 12 sentences long
STUDY the following notes for an explanatory pharagraph

psychology
What dictates the design (experimental versus quasi-experimental) and the type of manipulation used in a research study?

arithmetic
a board 2 yards long. If 6 inches from one end was cut off. How many inches long was the shelf.

algebra
the soccer team is designing a triangular flag for their games. the length of the base is 5 inches more than the height,h. express the area of the flag as a function of the height.

math
on november 1, the holiday house store marked up a $50 decoration by 30%. On November 28, the decoration was marked down 10%. It was marked up 20% on sales on December 1. Finally it was marked down 70% on December 26. Find the final selling price

algebra
What is the solution set for 10^x=2.5

algebra
Find the accumulated value of an investment of $10,000 for 3 years at an interest rate of 6% if the money is a)compounded seiannually,b)compounded quarterly, c) compounded monthly, d) compounded continually

College Algebra
Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by . a) What was the average score when they initially took the test, t = 0? Round y...

college algebra
I need to find out the solution in terms of natural logarithms for this 10^x=2.5

college algebra
I need to find out the solution in terms of natural logarithms for this 10^x=2.5

college algebra
Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by S(t) = 68 - 20 log (t+1), t > 0

college algebra
Please show me how to work this e^.05t =1600

Algebra
A grandmother is looking for a plan to finance her new grandchild’s college education. She has $25,000 to invest. Search the internet and locate a long-range investment plan, CD, Savings Bond, etc, for the grandmother. The plan is to earn compound interest. Calculate the ...

ThankYou Reiny!!!
Thank you!

Algebra(please Proof Read
P(x)= -.1(100)^2 +50(100)+300= 3,700,000 P(x)= -.1(150)^2 +50(150) +300= 4,950,000 P(x)= -.1(250)^2 +50(250) +300= 5,950,000 P(x)= -.1(350)^2 +50(350) +300= 4,950,000 P(x)= -.1(450)^2 +50(450) +300= 1,950,000

Algebra
Please Check these P(x)= -.1(100)^2 +50(100)+300= 3,700,000 P(x)= -.1(150)^2 +50(150) +300= 4,950,000 P(x)= -.1(250)^2 +50(250) +300= 5,950,000 P(x)= -.1(350)^2 +50(350) +300= 4,950,000 P(x)= -.1(450)^2 +50(450) +300= 1,950,000

algebra
Annual profit in thousands of dollars is given by the function, P(x) = -.1x2 + 50x - 300, where x is the number of items sold, x ¡Ý 0. find the profit for 5 different values of x

Algebra
Solve algebraically and check your potential solutions: sqrt((x+2) -x =0

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