Tuesday

August 30, 2016
Total # Posts: 692

**signals and systems**

Q. Consider the signal h[n] = [( 1/2 )^n−1]{u[n + 3] − u[n − 10]} Express A and B in terms of n so that the following equation holds: h[n − k] ={( 1/2 )^(n-k−1), A<k<B 0, elsewhere}
*August 6, 2016*

**Physics**

Two resistors of 2.0 ohm and 3.0 ohm are connected a) in series b) in parallel, with a battery of 6.0V and negligible internal resistance. For each case draw a circuit diagram and calculate the current through the battery
*July 20, 2016*

**Calculus**

A box with square base and rectangular sides is being designed. The material for the sides costs 20 cents per square inch and that for the too and bottom costs 10 cents per square inch. The box is to hold 150 cubic inches. What dimension of the box will minimize the cost?
*June 29, 2016*

**Math**

Find the function of the sequence. 1.) -1,1,3,5,7 2.)8,-1,-10
*June 14, 2016*

**Math**

Please help me now this is my homework which I really had a hard time dealing with it. Find the function of the sequence. 1.) -1,1,3,5,7 2.) 8,-1,-10 Please, please help me now!
*June 14, 2016*

**Adding and subtracting mixed numbers**

Thank you Ms Sue. But how did you get 9 11/8 I'm stuck on that last step
*May 31, 2016*

**Adding and subtracting mixed numbers **

I am trying to help my son with his homework but I have no Idea on how to solve the problem. If you can please explain step by step how to solve it. (Simplify (4 1/8 + 6 1/4) - 2 1/2 I am lost when it tells me to rename if possible.
*May 31, 2016*

**Math**

The pressure P of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that A particular amount of a gas is initially at a pressure of 104 Pa at a volume of 108 L. If the volume is expanded to 432 L , what will the new pressure be ?
*May 25, 2016*

**math**

You roll a number cube twice. Find the probability of the event. Rolling a number less than 2 and then a number more than 6 Rolling an odd number then an even number Rolling a 7 then a 5
*May 25, 2016*

**Algebra **

The width of a rectangle is 10 inches less then it's length if the perimeter of the rectangle is 36 inches what is its Width in inches?
*May 25, 2016*

**Math**

There are 8 slices of pizza. Joey ate 2 slices. Chris ate 3. What is the fraction of the pizza they ate.
*May 9, 2016*

**Pre Algebra (Math)**

32 because you multiply 0.40 (decimal form of 40%) by 80
*May 5, 2016*

**Geography**

I need help writing a four paragraph essay on why the stamp act was unfair.
*May 5, 2016*

**Math**

3+3=-+2
*May 4, 2016*

**Math**

You have a cake that was cut into 18 pieces. At the end of the party one half of the cake was left. Then you friend took 5 pieces home for her family. What fraction of the cake do you still have?
*April 28, 2016*

**life orientation**

human dignity
*April 17, 2016*

**Geography help plz due tommorrow**

If colonial boundaries have produced a large number of problems for Aftican countries, could the continenta people revert to the boundaries that existed before European colonialism? What other solutions might there be to the problems created by Aftica's borders? Plz help ...
*April 11, 2016*

**5th grade math**

Two pails of different sizes contain 34.5 liters of water altogether. When 0.68 liter of water is poured from the bigger pail into the smaller pail, the amount of water in the bigger pail is 9 times that in the smaller pail. How much water was there in each pail at first?
*April 5, 2016*

**5th grade math**

kate drank 42.5 gals of milk in jan and feb. if she drank 5.3 gal more in feb. how much did she drink in feb?
*April 5, 2016*

**Chemistry**

An impure sample of (COOH)2 · 2 H2O that has a mass of 2.9 g was dissolved in water and titrated with standard NaOH solution. The titration required 32.4 mL of 0.144 mo- lar NaOH solution. Calculate the percent (COOH)2 · 2 H2O in the sample.
*April 1, 2016*

**Math**

Thank you very much Ms. Sue I greatly appreciate your help. I am glad I came across this site, I will visit it frequently. It will defiantly help my Daughter and myself to further assist her with these math problems.
*February 27, 2016*

**Math**

Thank you Ms. Sue. I am Bella's Father, I also found it strange that they would post this type of a question for my 8 year old. Quick question does this one sound right for her grade. I tried to help her solve it, but my Daughter seemed confused. A rectangular room is 20 ...
*February 27, 2016*

**Math**

I am in 3rd grade, we are not multiplying by 3 digits that is why i tried the second one. I think it is the 2nd one. after adding both answers??
*February 27, 2016*

**Math **

Johnson's house was $112.00 per square meter to build. The house is 12 meters wide and 18 meters long. How much did it cost to build the house? 12x18=216 $112x216=24,192 or $112x12=1,344 $112x18=2,016 Add=$3,360 to build the house??
*February 27, 2016*

**Math**

Victoria has a 2-pound package of flour. she uses 2/5 of the flour to make a pizza. She then uses 3/10 of the remaining flour to make bread. Find the weight of the package of flour that she has left. Express your answer in decimal
*February 25, 2016*

**math**

Jack sold $25,000 worth of computers during one month. His pay for the month was $3500. What is his commission?
*January 29, 2016*

**math**

How many 2/9 inch pieces can be cut from a piece of yarn that is 6 inches long
*December 27, 2015*

**Math**

Find the right end behaviour of x^3- e^(-x). The answer choices are -x^3, x^3, -e^-x, e^-x, e^x.
*December 11, 2015*

**math**

Evaluate the expression 6³√-512+13???HELP...
*December 10, 2015*

**geometry help plsss**

thank you! i was really just about to write "there is no error"
*November 30, 2015*

**geometry help plsss**

friend constructs line xy so that it is perpendicular to and contains the midpoint of line AB. he claims that line AB is the perpendicular bisector of line line XY. what is his error
*November 30, 2015*

**geometry**

1.in this problem, you will draw three rays for each triangle. each ray starts at a vertex and passes through the interior of the triangle.(how many triangles am i drawing) what is the maximum number of points of intersection between the rays?
*November 30, 2015*

**technoligy**

Number one is d. Credit
*November 22, 2015*

**art**

Ms sue do you know
*November 6, 2015*

**art**

I think you do a 3d one
*November 6, 2015*

**Algebra 1**

ok thank you I think I understand now
*October 29, 2015*

**Algebra 1**

I also have to solve for x~ a(bx-c)=d-(x+e) again, all variables represent positive #s
*October 29, 2015*

**Algebra 1**

I'm still confused though~ so x= (d-a+bc)/-b? and those 3 answers given are the final things you can do?
*October 29, 2015*

**Algebra 1**

I'm so confused on how to solve this problem~ a-b(x+c)=d I'm supposed to solve for x and all of the variables are positive -_- I'm lost
*October 29, 2015*

**Math**

1. Cystic fibrosis (CF), a life-threatening lung disease, is caused from the inheritance of a recessive allele from both parents for the CFTR gene. In order for this disease to manifest itself, one needs to be homozygous recessive for this autosomal gene. According to the ...
*October 25, 2015*

**genetics math**

2. Genotypes of leopard frogs from a population in central Kansas were determined for a locus (M) that encodes the enzyme malate dehydrogenase. The following numbers of genotypes were observed: Total sample studied = 107. Genotype Number M1M1 20 M1M2 45 M2M2 42 a.) Calculate ...
*October 25, 2015*

**Mathmatics**

Solve the problem. Make sure your answer is in simplest form. 5/8 x 4/15 =
*October 20, 2015*

**Math**

i know these logic questions she is right there should be hints
*October 13, 2015*

**First grade math?**

What added together = 5? I'm helping my little brother with his home work and it says show 5 in the different ways. We already did 3 +2 and 4 + 1 what else ???!!!
*October 8, 2015*

**Finance**

Question 3. 3. Which of the following is true of flotation costs? (Points : 1) They include expenses like investment banker fees and commissions. They include the underwriting spread. They tend to raise the cost of capital. all of the above
*September 21, 2015*

**Finance**

1. A bond pays semiannual coupon payments of $30 each. It matures in 20 years and is selling for $1,200. What is the firm’s cost of debt if the bond’s par value is $1,000? (Don’t forget this is a semiannual coupon.) (Points : 1) 2.23% 4.48% 1.80% 3.60%
*September 21, 2015*

**Finance**

Question 2. 2. If an investor purchases a share of stock for $300, collects a dividend during the year equal to $35 a share, and sells the stock at the end of the year for $289, what is the investor’s return for the year? (Points : 1) 12.11% 8.30% 8.00% 15.33%
*September 21, 2015*

**finance**

1. A bond pays semiannual coupon payments of $30 each. It matures in 20 years and is selling for $1,200. What is the firm’s cost of debt if the bond’s par value is $1,000? (Don’t forget this is a semiannual coupon.) (Points : 1) 2.23% 4.48% 1.80% 3.60%
*September 21, 2015*

**finance**

Question 8. 8. Which of the following best describes a pure-play? (Points : 1) a private firm that is held in isolation in a one-company investment portfolio a publicly traded firm that is similar to the company or project being analyzed Both a and b are correct. Neither a nor...
*September 21, 2015*

**English**

How do I do a synthesis? What steps should I take? I'm lost and confused? What details must I get?
*September 17, 2015*

**Math**

i need help
*September 16, 2015*

**Math**

A= ((r+z)/3)m solve for r
*August 30, 2015*

**maths**

1/2
*August 24, 2015*

**MATH**

What are the odds in favor of randomly drawing the letter C from the letters in the word CANADIAN?The odds are from ____ to _____
*August 23, 2015*

**Math**

Sorry... so that the probability of drawing a red ball is 3/4 so that the probability of drawing a white ball is 1/4
*August 23, 2015*

**Math**

A box contains 8 white balls, 7 black and 4 red. How many red balls must be added to the box so that the probability is 3/4? How many black balls need to be added so that it is 1/4? Thanks I have a mental block with this.
*August 23, 2015*

**MTH 156**

A crew consists of 1 apprentice, 1 journeyman, and 1 master carpenter. The crew receives a check for $6900 for a job they finished.A journeyman makes 300% of what an apprentice makes and a master carpenter makes make 250% of what a journeyman makes. How much does each person ...
*August 7, 2015*

**MTH 156**

2^6 * 2^7 multiply and simplify and then write the answer in exponential notation. I know the answer is 8,192 but I cannot figure out how to write that in exponential notation. Thanks for the help.
*August 5, 2015*

**MTH 156**

I know the answer is 8,192 but I cannot figure out how to write that in exponential notation. Thanks for the help.
*August 5, 2015*

**MTH 156**

2^6 * 2^7 multiply and simplify and then write the answer in exponential notation. Thanks!
*August 5, 2015*

**mth 156**

a company needs $55,000 in 7 years for a new addition. To meet this goal, the company needs to deposit money in an acct today that pays 5% annual interest compounded quarterly. What amount should the company invest to total $55,000 in 7 years? Thanks!
*August 5, 2015*

**mth**

Thank you!
*August 5, 2015*

**mth**

A faculty lost 1/5 of its faculty in the reduction. If 88 faculty were left, how many faculty were there originally? Thanks!
*August 5, 2015*

**Math**

Crew receives a check for $5100. The journeyman makes 300% of what the apprentice makes and the master makes 150% of what the journeyman makes. How much do they each make? Thanks!
*August 5, 2015*

**Algebra**

if the number of professors in a college is p and the number of students s and there are 19 times as many students as professors, write an algebraic equation that shows the relationship Thanks for the help!
*August 2, 2015*

**Math**

Thank you! I was having a mental block with this...
*August 2, 2015*

**Math**

a local government had an employee reduction and lost 1/9 of their employees. If 176 of its employees were left after the reduction how many employees were there originally?
*August 2, 2015*

**Math 156**

What is the greatest prime you must consider to test whether 7356 is prime? Thanks for the help.
*July 26, 2015*

**math**

Thanks so much Steve.
*July 14, 2015*

**math**

If the mean, median, and mode are the same what is the value of x when given the numbers 3,4,5,8,x I am not sure how to figure this out thanks for your help.
*July 14, 2015*

**MTH 156**

a function machine accepts inputs as ordered pairs. the components of the ordered pairs are natural number and the first component is the length of a rectangle and the second component is the width. The given machine computes the perimeter (the distance around the rectangle). ...
*July 10, 2015*

**mth 157**

I can, thanks so much!!
*July 10, 2015*

**mth 157**

Matt has four times as many stickers as David. How many stickers mush Matt give Davis so that they will each have 75 stickers? I am so bad at these problems, please help!
*July 10, 2015*

**Math 157**

Help please! Write an expression for the cost c, if a printer charges $1.75 for binding, plus 5 cents for p pages for copies of a community groups annual report Thanks I have a mental block with these problems.
*July 8, 2015*

**Calculus**

One side of a rectangular animal pen is to be formed by the side of a barn. If you have enough material to build a total of 34 feet of fence, find the maximum area than can be enclosed
*June 17, 2015*

**Chemistry**

A 1.00 kg piece of aluminum metal at 80 degrees Celsius is placed in water that is 25 degrees Celsius. How much water is needed to cool the aluminum to 65 degrees? I'm stuck as where to start with this.
*June 1, 2015*

**Math**

The graphs of 5x-3y=35, 7x-3y=43, and 4x-ay=61 all intersect at the same point. Find the value of "a". Do I solve the systems and then plug in? I am not sure haha.
*May 27, 2015*

**English**

No I am not saying that. Its just that my thesis(What my teacher assigned) is supposed to challenge something from the novel- preferably something on the legitimacy of the author's depictions. I think my teacher just wants to see me challenge something and back it up with ...
*May 27, 2015*

**PE**

the correct answers are baccbabaadaa I got a 100%
*April 20, 2015*

**Math**

Jan + Feb + 5.3 = 42.5 x+x+5.3 = 42.5 2x+5.3=42.5 2x=42.5-5.3 2x=37.2 x=37.2/2 x=18.6 Jan = 18.6 Feb = 18.6+5.3 = 23.90 18.6+23.9*42.5
*April 17, 2015*

**Geometry**

The measures, in degrees, of the three angles are x, x+10, and 2x-6. Find the measure of all three angles of the triangle.
*April 8, 2015*

**math**

Use ratios, fractions, and tape diagrams to get the answer of $194 dollars. I'm a sixth grader who figured this out in under 3 minutes.
*March 27, 2015*

**Math **

Sarah was trying to figure out her grades for her math course. She only knew the grade of 4 of the tests she had taken, however the class had taken 5 tests total. She scored a 94, 67, 83, and 93. If Sarah ended up with a grade of 90, what did she get on the 5th and final test...
*March 26, 2015*

**Science!**

1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
*March 20, 2015*

**science**

what is the events of led at lighting
*March 19, 2015*

**Art!**

what 3-d imaging use to capture a digital map of an artifact? a. electromagnetic radiation b. laser technologe c. laser technology d. photography <---- ? what technology would be best to use when analyzing the pigments in a large mural? a. photo editing software <----- b...
*March 16, 2015*

**Please Check My Math Answers. Thanks!**

Wronnngggggg all of them are we'll nag sorry
*March 10, 2015*

**Sosiology**

1. What is the Bully 2. What is the cause someone could be bullied?
*March 7, 2015*

**Accounting**

Beginning work in process inventory 17,000 40%. Transferred in from the prior department 72,000. Ending work in process inventory 18,000 30% According to the company records the conversion cost in the beginning work in process inventory was $63.104 at the beginning of ...
*March 1, 2015*

**Math**

The table below shows the number of students from different classes of two schools who participated in a sports competition: School A 25 21 2 22 20 21 20 23 1 School B 3 2 1 5 4 2 3 4 3 Part A: How can you use box plots to compare the median and interquartile range of the data...
*February 26, 2015*

**L.A.**

nope it was C you are wrong
*February 25, 2015*

**L.A.**

is it b
*February 25, 2015*

**L.A.**

john updike
*February 25, 2015*

**L.A.**

ok i got that right thanks but did i get 2 and 3 right?
*February 25, 2015*

**L.A.**

There are none that are the same
*February 25, 2015*

**L.A.**

1. Which is the best paraphrase of these lines from "New World"? eagles / hie and / hover / above / the plain a)Eagles hurry and hang above the flatland.*** b)Eagles hang in midair and wave their wings. c)Eagles race and rush in an ugly way. d)Eagles soar and swoop ...
*February 25, 2015*

**life orientation**

Answer about engaging in physical exercises
*February 23, 2015*

**oil prices**

supply and demand affect the price of oil
*February 17, 2015*

**geometry **

Triangle DEF where angle E is a right angle. DE measures 55. EF measures x. Angle D measures 49 degrees. What is the value of x rounded to the nearest hundredth? Type the numeric answer only in the box below.
*February 8, 2015*

**Two English Questions (HELP!!)**

its A
*February 3, 2015*