Friday

August 28, 2015
Total # Posts: 370

**algebra 2**

If someone can help me understand this question I'd appreciate it. Solve the following equation. Its a 3x3 matrix that = x^2 first row is 0 0 -1, second row 3 x 0, 2 0 3. Im not quite sure how to find x so i can figure out what x^2 is.
*August 17, 2015*

**algebra 2**

Im having troubles with this question if u can explain it ill appreciate it. 1)Suppose a contest offers $1,000 to the person who can guess the winning four digit number.How many possibilities are there?
*August 14, 2015*

**algebra 2**

Please show how to do these problems so i understand. 1)Prove that sin^2 x (1+cot^2 x)=1 2)Prove that tan x (cot x+tan x)=sec^2 x
*August 11, 2015*

**algebra 2**

Please show how to do these problems so i understand. 1)Prove that sin^2 x (1+cot^2 x)=1 2)Prove that tan x (cot x+tan x)=sec^2 x
*August 11, 2015*

**ALG 2**

Im doing the conic section in algebra and cant figure out how to determine the extent of the graph. Which the graph equation is x^2/16-y^2/25=1 can you please help me this is the only thing i dont understand how to figure it out.
*May 20, 2015*

**Statistics**

A variable is normally distributed with mean 68 and standard deviation 10. Find: a) The value that 85% of all possible values of the variable exceed. b) The two values that divide the area under the corresponding normal curve into a middle area of 0.90 and two outside areas of...
*April 13, 2015*

**Statistics**

The distribution of weekly salaries at a large company is reverse J-shaped with a mean of $1000 and a standard deviation of $370. What is the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random ...
*April 13, 2015*

**maths**

Pls how do I calculate 6.022 x 10 raised to the power 23 with other figures in a question?
*April 11, 2015*

**Physics**

Assume you have a rocket that requires a change in velocity of DeltaV=9.6km/s . There are two options for the propulsion system --- 1. chemical and 2. electric --- each with a different specific impulse. Using the setting of g0 =9.81m/s^2 to calculate the propellant fraction ...
*March 12, 2015*

**Physics **

Assume you have a rocket that requires a change in velocity of ¦¤V¡Ö9.6km/s . There are two options for the propulsion system --- 1. chemical and 2. electric --- each with a different specific impulse. Using the setting of g 0 =9.81m/s^2 to calculate ...
*March 12, 2015*

**Geometry**

what is the length of base 1 and base 2 of a trapezoid with the midsegment 32 and the height 16
*March 5, 2015*

**Computers**

Awesome they were both correct
*February 24, 2015*

**Computers**

1) What is the purpose of computer simulations? A. to provide virtual hands-on experience when actual hands-on experience is not possible*** B. to provide an online version of a printed text C. to provide clip art about the subject being studied D. to provide a real life hands...
*February 24, 2015*

**ECE 203**

What is a great succinct introducation for assessment data to guide practice
*January 13, 2015*

**algebra 2**

Simplify if possible..if not write not possible. 1.) 2√3+√27-√1/3 2.) √1/2•(√8+√2) 3.)√18-√3/√6
*December 12, 2014*

**Math**

What is the monthly payment?
*December 9, 2014*

**Math**

Use the formula or a calculator application to find the monthly payment on a home mortgage of $292.649 at 5.004% interest for 25 years.
*December 9, 2014*

**Math**

the math problem is 8 3/5 divided by 1 2/3 =5 4/25 how do you answer with bar models
*December 8, 2014*

**History**

Which was expected of women in the early nineteenth century? (Points : 2) working to own property obeying their husbands teaching their daughters reading and math helping their husbands make economically sound decisions Is it b?
*December 1, 2014*

**algebra 2**

Can u explain what I have to in question two its still doesnt quite make since
*November 29, 2014*

**algebra 2**

Solve for the unknown. 1.) √y+√y+7=7 2.) √x+11=√x +1
*November 29, 2014*

**algebra 2**

Can u please help me on this question.Simplify 1.) √a/b×√a^2/b^2
*November 24, 2014*

**algebra 2**

Simplify. 1.) 2•√25/26 2.) √a^2/b^5 3.) √a/b √a^2/b^2
*November 21, 2014*

**Us History**

How had the American electorate changed by the election of 1828? Thanks to the suffragette movement, women in some states were eligible to vote. With landholding requirements still in place, fewer men were eligible to vote. With landholding requirements eliminated, most white ...
*November 18, 2014*

**math**

How many 1/4 cups servings are in 5/8 cup?
*November 11, 2014*

**algebra 2**

I don't understand this (x-y)/(x+y) + (x+y)/(x-y)
*November 11, 2014*

**algebra**

Assuming that none of the solutions are undefined,simplify each of the following. 23. A^2mB^m+1/A^mB 24.(A^2B^3/c)^0
*November 4, 2014*

**algebra 2**

Write in simplest form without negative exponents( leave responses as simplified fraction. 1.(ax)^-2 2[(-4)^2]^-5
*November 2, 2014*

**chemistry**

Which of the following solutions of glucose (C6H12O6) is isotonic with a 0.15 M NaCl solution? Question 24 options: 0.15%(w/v) 0.55%(w/v) 1.5%(w/v) 5.4%(w/v)
*October 30, 2014*

**chemistry**

8.9
*October 30, 2014*

**algebra 2**

Show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent??
*October 28, 2014*

**Computer Programming**

Create the flowchart and algorithm for a module that will prompt the user to enter the amount of cash they have in their pocket. The program should output “Not Enough” ($0 - $0.64), “Vending Machine” ($0.65 - $1.99), “Fast Food” ($2.00 - $4.99...
*October 27, 2014*

**math**

The shelf is 2 1/2 feet long since you didn't feel like looking around...
*October 22, 2014*

**algebra**

I need help factoring.Please! 1.4x^4-4x^2+1 2.a^4+a^2
*October 15, 2014*

**algebra**

Factor each of the following polynomials. 1. x^2+x-6 2. 6x^2+13x-5 Thanx!
*October 15, 2014*

**algebra 2**

Find the GCF and LCM of the following monomials. 1.)28,35,42 2.)9x^2y and 36xy^3
*October 9, 2014*

**algebra**

A car hits an object the object goes 25 ft in the air and lands 300 ft away, how fast was the car traveling when hit the object?
*October 5, 2014*

**algebra 2**

Multiply polynomials (ab-2)(ab+2)
*September 30, 2014*

**algebra **

How do I graph x<2y and x+y<0
*September 25, 2014*

**algebra 2**

How do I graph 3x+y<5.if u can help it'd be appreciated
*September 24, 2014*

**chemistry**

The reaction of 9.58 g of Carbon with excess O2 yields 8.90 g of CO2, what is the percent yield of this reaction?
*September 24, 2014*

**algebra**

I'm not sure how to answer this question? 1<3x+2<12 Please explain the answer so I know how to do these kind of questions
*September 12, 2014*

**PreCal**

An airplane has a ground speed of 523 mph and a component form of the velocity of <-482.781, -39.262>, due to wind. What is the bearing of the plane?
*July 21, 2014*

**physics**

formula is v=u+at; just sub values in
*June 11, 2014*

**math**

A music concert was attended by 450 people. Adult tickets sold for $70 and children’s tickets for $40. If total sales were $27,750, how much of each ticket was sold?
*May 21, 2014*

**Math**

6x=y+1 find the slope and y intercept
*May 5, 2014*

**Marketing**

How would various company objectives affect the development of a marketing mix for a new type of internet browser software? If this company were just being formed by a former programmer with limited financial resources, list the objectives the programmer might have. then ...
*February 18, 2014*

**Marketing**

Explain how a firm's objectives may affect its search for opportunities.
*February 17, 2014*

**Marketing**

How would various company objectives affect the development of a marketing mix for a new type of internet browser software? If this company were just being formed by a former programmer with limited financial resources, list the objectives the programmer might have. Then ...
*February 17, 2014*

**Physics**

Rotation is 3000 rev per min. F=1/T or T=1/F F is measured in rev per second. F=3000/60=50 T=1/50=0.02s S to MS is x1000 so 0.02s => 20ms Hence, it is appropriate to use 10ms/cm for a clear display of pulse.
*January 30, 2014*

**Biology**

Microorganisms develop resistance to antimicrobial drugs in a number of ways, EXCEPT A. Producing an enzyme that deactivates the antimicrobial drug B. Changing the cellular permeability to prevent the drug from entering the cell C. Interfering with the cell wall synthesis of ...
*January 18, 2014*

**Science**

Which of the following statements is most closely associated with Einstein's general theory of relativity? The gravitational constant has the same value everywhere. Mass is equivalent to weight. Being in an accelerated frame is indistinguishable from experiencing gravity. ...
*January 15, 2014*

**Math**

It is 30. 40-10
*November 14, 2013*

**Psych T/F Questions**

1. Some hearing losses experienced by middle-aged adults are due to exposure to noise? True 2. A combination of progesterone and estrogen (HRT) is commonly used to treat immune system disorders? False 3. Men experience the same sudden downward shift in reproductive ability as ...
*November 4, 2013*

**Psych**

Thank you
*November 3, 2013*

**Psych**

Isn't that link for development...not population?
*November 3, 2013*

**Psych**

the population of the world between 1960 and 2000: doubled tripled remained stable decreased by half (maybe this one?)
*November 3, 2013*

**chemistry**

It's actually 0.00115
*October 14, 2013*

**Math**

If Anna is 5 ft tall. How tall is she in centimeters and what is the rate?
*October 1, 2013*

**College Statistics**

Suppose we want to model the number of rats captured in a single trap in a day, where the average number caught is 5 (i.e. X ∼ Poi(5)). (a) What is the probability of catching 6 rats in one trap in a day? (b) What is the probability of catching 12 rats in 2 traps in a ...
*September 30, 2013*

**College Statistics**

For X ∼ Bin(n, p), show that E(X) = np and Var(X) = np(1 − p) Our book defines this as true, but I don't know how to actually prove it.
*September 30, 2013*

**geometry**

In step 4 of the construction of a perpendicular line through a point, why must the compass point be placed on the points where the arc intersects with the original line? How would the construction be different if the compass point were placed at random points on the original ...
*June 26, 2013*

**Physics**

Which of the following is correct for the two coherent light waves to produce zero light?
*May 31, 2013*

**algebra 1**

Circle the most appropriate description. 27.A city planning commitee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Random Sample,systematic sample,self-selected sample, convenience sample, bipartisan sample,stratified random...
*May 20, 2013*

**CHEMISTRY**

commercial HCL IS SOLD AT 37% WITH SPECIFIC GRAVITY OF 1.18.HOW WILL YOU PREPARE 5OML FOR 100STUDENTS AT THE CONCENTRATION OF 0.25M
*May 17, 2013*

**CHEMISTRY**

commercial HCL IS SOLD AT 37% WITH SPECIFIC GRAVITY OF 1.18.HOW WILL YOU PREPARE 5OML FOR 100STUDENTS AT THE CONCENTRATION OF 0.25M
*May 17, 2013*

**Algebra 1**

For each event,circle the most appropriate term. 21. Six friends go to a movie.How many ways can they sit in a row of six seats? counting principle,combination,factorial, or permutation
*May 15, 2013*

**general**

how can the plan of action help you address a current problem or challenge you are having with school
*May 15, 2013*

**Chen=mistry**

Sodium metal reacts violently with water to form NaOH and release hydrogen gas. Suppose that 3.00 g of Na reacts completely with 3.00 L of water and the final volume of the system is 3 L. What is the molarity M of the NaOH Solution formed by the reaction?
*May 1, 2013*

**Completing the sentence**

Balk
*April 29, 2013*

**Completing the sentence**

Since I'm afraid of the heights, I usually -------- at the idea of sitting in the first row of the topmost balcony in a theater.
*April 29, 2013*

**Math**

David and Joseph have a total of 328 marbles. Matthew and David have 176 marbles. Joseph has 5 times as many marbles as Matthew. How many marbles does Davis have?
*April 2, 2013*

**chemistry**

Calculate the temperature at which it is thermodynamically possible for C (s) to reduce iron(III) oxide by the reaction: 2Fe2O3 (s) + 3 C (s) ---> 4Fe (s) + 3CO2 I don't need a specific answer, but I'm not sure how to approach the problem. I'm assuming it has to...
*February 28, 2013*

**human development**

which one of the following expressions best illustrates overregularization?
*January 31, 2013*

**Accounting**

how do you classify what the cost to set up a manufacturing facility as? is it general, selling and administrative and what type of cost is it? Please Help.
*January 19, 2013*

**Chemistry**

What is Mass % of an aqueous NaOH solution in which molality of NaOH is 16.7m? Density of the solution is 1.4339g/ml
*January 13, 2013*

**Chemistry**

Solutions are made that contain 0.1 moles of each of the following compounds below in 100g of H20. Choose the compound whose solution will have the lowest freezing point? NaBr CO2 KClO3 MgCl2 MgSO4
*January 13, 2013*

**Chemistry**

Which of the following solutions would have the highest osmotic pressure? 0.15 M KCl 0.2 M C6H12O6 0.2 M C12H22O11 0.2 M CH3COOH 0.15 M CaCl2
*January 13, 2013*

**Intergrated Algerbra**

A caterpillar and snail are 300 ft apart. They meet face to face in 5 hours. What were their speeds?
*November 29, 2012*

**Physics **

a net force of 3.50 N acts on a 2.75 kg object. what is the acceleration of the object?
*November 29, 2012*

**science**

How many grams of citric acid is needed to titrate 20ml NaOH 0.05M their mole ratio is 1:3 respectively
*November 28, 2012*

**algebra**

Completely factor the following expressions. 1. 256z^2-4-192z^2+3 2. 2a^2c^3-14bc^3+32c^3d^2 3. 35g^2+6g-9 4. 3j^3-51j^2+210j
*November 28, 2012*

**algebra**

Completely factor the following expression.1.) 5c^2-24cd-5d^2
*November 28, 2012*

**algebra**

Completely factor the following expression.1.) 5c^2-24cd-5d^2
*November 28, 2012*

**algebra**

Completely factor the following expression. 1.4x^2-8x-12+6x
*November 28, 2012*

**Chemistry**

What is the general trend in the acidity of Period 3 oxides moving across the Periodic table from left to right? (Be sure to refer to the term acidity.)
*November 27, 2012*

**math**

2x squared plus 6 x plus 3 is equal to 0.....
*November 26, 2012*

**Medical coding**

What icd-9 procedure code is used for a hemilaminectomy medial facetectomy and foraminotomy?
*November 18, 2012*

**Algebra 1**

Christopher orders a 3 topping pizza for $15.25 and a 5 topping pizza for $17.75. Write and solve a system of linear equations to find the price of a plain pizza( no toppings) and the cost of each topping.
*November 14, 2012*

**Algerbra 1**

You have a coupon for $50 off your camera purchase of $100 or more at Zeke's Camera World. Write a function relating a camera's purchase price, y, to the retail price, x. Give the domain of this function.
*November 14, 2012*

**alegbra 1**

Solve the following systems of linear equations using algebraic method. 1)3y=11-2x 3x=y-11 2)8x-6y=14 12x-9y=18
*October 31, 2012*

**alegbra 1**

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7
*October 31, 2012*

**alegbra 1**

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7
*October 31, 2012*

**alegbra 1**

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7
*October 31, 2012*

**alegbra 1**

Solve the following systems of linear equations using any algebraic method.If possible,check your solution. 1)2x+5y=3 X-3y=7 2) 3y=11-2x 3x=y-11 3)8x-6y=14 12x-9y=18
*October 30, 2012*

**Math**

Some chickens, cows, and sheep are in a field. Their number of legs is 12 more than twice their number of heads. How many 4 legged animals are in the field?
*October 25, 2012*

**algebra 1**

Natalie performs a chemistry experiment where she records the tenperture of an ongoing reaction.The solution is 93.5 C after 3 minutes;90 C after 5 minutes,84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes;42.5 C after 37 minutes; and 24.9 C after 48 ...
*October 24, 2012*

**algebra 1**

1. Solve the linear system using substitution. 4x-y=5 4x+4y=-4
*October 23, 2012*

**AP US History**

well ms.sue the fact that she can't answer the question doesn't mean she doesn't have the potential to be in an AP class.
*September 26, 2012*

**Math**

Shoe me the steps to solvethe problem 12 divided by 1/4 to the second power
*September 17, 2012*