Saturday

May 28, 2016
Total # Posts: 1,003

**math**

x + y =90 x-y = 18 Add the two equations together which will eliminate y. Solve for x and then substitute the value for x into the first equation to find y. check the x and y values in both equations to be sure you are correct.
*February 13, 2013*

**Math**

If the floor has an area of 52, it must be in square yards. To find how much she needs multiply 52 times 3/4 since she only wants to cover 3/4 of the floor. Now, is there a second part of the question asking for how many pieces of 4 square yards does she need? If so, they ...
*February 13, 2013*

**math**

degree 4 begins with x^4 trinomial means 3 terms so you can add two more terms. It doesn't matter if it is x^3, x^2, or x or a constant. With a greatest common factor of 1 means that the the coefficients should be written in such a way that they don't have a factor in ...
*February 13, 2013*

**math**

You need to use the order of operations here which is a little difficult given how we have to write the math at this site. I am understanding that 20(-2-3) is the numerator which would be 20(-5) or -100 The denominator is -3[4 -(-2)] - 4(-3) -3 [4+2] -4(-3) -3(6) -4(-3) -18 + ...
*February 13, 2013*

**math**

in 2 hours the car will travel 200 km. 15 minutes/60 minutes in an hour = 1/4 hour so multiply 1/4 times 200 Can you finish from here?
*February 13, 2013*

**Math Probability**

rolling a die with 1 - 6 on each side. then rolling another die There are 36 possible outcomes. When will you get an 11 or great 5-6 or 6-5 or 6-6 That is 3 chances out of 36. Can you finish the problem from here?
*February 13, 2013*

**Statistics**

Usually, the rule is to go to the 4th place and it is 5 or higher round up. The answer would be .206 There is also another rule that says to round up when there is a 5 only if the answer will be even. Again, .206 would be the answer. Using either rule we get .206
*February 13, 2013*

**Math**

There are 16 cookies in the jar, Since there are 4 choc chips you have 4/16 or 1/4 to get a choc chip You have to multiply 1/4 times the chance of getting a second choc. chip. Since you aren't replacing, you now have 3/15 chances since you have to assume you got the choc. ...
*February 13, 2013*

**math**

Suppose you used 2 cups every time you ate pancakes, you would divide 48 cups by the 2 cups. Right? This is a division problem you will divide 48 by 2/3 which is the same thing as multiplying by 3/2, so you will multiply 48 times 3/2 Since you are using less than 1 cup each ...
*February 13, 2013*

**Algebra 2**

your divisior is -6 your dividend is: 1 3 -28 -62 You bring down the 1 and multiply by -6 3 -28 -62 1 -6 Then you bring down the -3 and multiply by -16 compane the 48 with the -28, etc. can you do the rest from here? You reassign the variables starting with x^2, x, constant ...
*February 13, 2013*

**statistics**

25/125 gives the percentage that may be bad. Multiply that % times the 350 batteries.
*February 13, 2013*

**statistics**

95% confidence interval indicates that you have 5% outside the confidence interval and 2.5% on either side. This is an area of .025. You can use a calculator or a t-table to find the critical value. Multiply that value times the standard deviation. add this value to the mean ...
*February 13, 2013*

**math**

Multiply (2y+7)(2y+7) It is fine to divide both sides by 3 first, that will make the numbers a little smaller. You will have (2y+7)(2y+7) = 27 After multiplying, you should have 3 terms = 27. Subtract the 27 from both sides so that you will have a trinomial = 0. You can then ...
*February 13, 2013*

**math**

first leg = x second leg = x/2 plus 3 area of a triangle is 1/2 times bh 54 = 1/2 times ((x) times ( x/2 + 3)) Can you finish from here?
*February 13, 2013*

**algebra**

I am not sure what the problem is exactly. the second row is confusing me.
*February 13, 2013*

**algebra**

What is the question? Is it how many do you have to make per hour to finish in time? If so 400 - 225 = ? then divide that answer by the 2 hours.
*February 13, 2013*

**Math**

Marshal sleeps 8 hours each day how many hours does Marshal sleep in one week
*February 12, 2013*

**english**

and wat is the best way to arrange our steps for using the tool
*February 12, 2013*

**english**

how do u find a subject for writng instuctions for using a tool
*February 12, 2013*

**math**

Multiply each possible prize times the chance of winning and add them all up. compare that number with $1 to find your expected gain or loss. If the number is larger, you have a gain. If the number is smaller, you have a loss.
*February 11, 2013*

**Math**

Your first step is to use the Addition Property to get the variables on the same side of the equation.. If you mean something like 4x + 5 = 6x Add -4x to both sides: 5 = 2x then solve for x.
*February 11, 2013*

**math**

Let x = cost of each shirt let y = cost of each pair of pants 4x+3y = $85.50 3x + 5y = $115.00 You can use the Addition/Elimination method to solve this problem. You have to eliminate one of the variables. You can multiply the top equation by -3 and the second equation by 4. ...
*February 11, 2013*

**Math**

Somone just asked this question. Look down in the frequent posts with JJ's answer. If you can't find it. Remember there are 7 days in a week and 24 hours in one day.
*February 11, 2013*

**Math**

3 times 2 doesn't equal 5 is another way to say it.
*February 11, 2013*

**Math**

Sounds like a right triangle. use c^2 = a^2 + b^2 c = 20 a = 3x b = 4x 400 = 9x^2+ 16x^2 solve for x^2 and then take the square root to find x. Multiply this value times the 3 to find one side times the 4 to find the other side.
*February 11, 2013*

**3rd grade math**

You have to add 1/3 and 1/5. You need to get a common denominator of 15. after you add the fractions, subtract from 1 for 1 whole pie. (You can write 1 as 15/15). compare your answer with 1/2 to see if it is larger or smaller. (It is always good to be sure the denominators are...
*February 11, 2013*

**Chemistry**

I am agreeing with you a negative delta H should be an exothermic reaction.
*February 11, 2013*

**Math**

8 hours times 7 days in a week. Is how long he sleeps 24 hours times 7 days = is the number of hours in a week. subtract the sleep time from the total to get hours awake.
*February 11, 2013*

**math**

Shirts white and blue - 2 choices brown, black , jeans pants - 3 choices cashmere coat and a windheater - 2 choices You have 2 times 3 times 2
*February 11, 2013*

**math**

sorry!!!! I didn't read the question carefully.
*February 11, 2013*

**math**

36 - 12 = 24 find the percent of 24/36 You will get a decimal and then have to move it to places to the right to get the answer as a %.
*February 11, 2013*

**Math**

The tennis team has 2 players and the Basketball team has 5 players. Is 5 = 3 x 2 ??
*February 11, 2013*

**math**

2 is in the hundredth place so it can be written as 2 x 10^-2 6 is in the thousandth place so it can be written as 6 x 10^-3
*February 11, 2013*

**Calculus**

n = 0 then A(n) = 1 n = 1 then A(n) = -1 n = 2 then A(n) = 1 n = 3 then A(n) = -1 The graph will continue from 1 to -1 indefinitely. The same thing will happen for n<0.
*February 11, 2013*

**Physical Science Help!**

2NO + O2 ---?? NO2 I started this one for you.. What goes in front of the NO2? Second equation On the left you have You have 4 N's 4 H's 2H's or 6 H's 1 Cl 1 Ca 2 O On the right you have 1 Ca 2 Cl 1 N 3 H and 2 H = 5 H 1 O Start by trying to balance the Cl.
*February 11, 2013*

**STATISTICS**

You have to find the z-score. 65-50 = 15 then divide by 10 which is z = 1.5 You can then use a z-table or a stat calculator to find the probablity less than 65% Depending on the table, you may want to find the probability of z = 1.5 or greater and then subtract that number ...
*February 11, 2013*

**English**

1) sounds okay 2) doesn't sound natural
*February 11, 2013*

**Math Word Problem**

Let x = the amount of $2/lb nuts Let y = the amount of the $4/lb nuts He buys triple of x amount so 3y = x This is similar to the first problem you posted. We need to know the value: Our second equation is 2x+ 4y = 32 You can complete this one just like the previous one that ...
*February 11, 2013*

**MATH**

Let F = number of Flashlights Let S = number of Sleeping Bags F = 3S since the number of flashlights is three times the number of sleeping bags. The value of the flashlighs is 12F The value of the sleeping bags is 45S The two equations are: F = 3S 12F + 45S = 1215 Substitute ...
*February 11, 2013*

**Chem**

Protons have a mass of about 1 and a + charge of 1. It seems like you would need approx. 3.5 protons. Any one else's comment would be appreciated.
*February 11, 2013*

**Algebra**

reply. If yo had -3x, the monomial would be degree 1. -3 just has a degree of zero because x^0 = 1 and 1 times -3 = -3
*February 11, 2013*

**math**

5 factorial means 5 times 4 times 3 times 2 times 1.
*February 11, 2013*

**Statistics- HELP!**

900 is the population because that is your total pool. The 35 who receive the survey are the sample. See the key words "random sample" the statistic is the value you get from the results of the survey which is the mean of the satisfaction score. We don't really ...
*February 11, 2013*

**college algebar**

Do you mean x - 2 divided by 6 or x -2/6 I think you probably mean (x-2/6 If that is correct, then multiply each part by 6 and then add 2 to each part. That will leave x in the middle. I call these the "sandwich problem" because x is sandwiched betweent the lower and...
*February 11, 2013*

**Applied Calculus**

The derivative of a constant is 0 The derivative of 340 = 0 The derivative of 340x would be 340 The derivative of 340x^2 would be 680x.
*February 11, 2013*

**bramalea secondary school**

There are 36 possible combinations when you roll a pair of dice. Figure out how many doubles you would have and subtract that from the 36 possible outcomes.
*February 11, 2013*

**Math**

a = b (-d-c)/cd Multiply cd times both sides then distribute the b. acd = -bd-bc add bc to both sides: acd+bc = -bd factor out the c c(ad+b) = -bd Divide both sides by (ad+b) to solve for c.
*February 9, 2013*

**college algebra**

3x-2y = 8 -2y = -3x+8 y = 3/2 -4 slope = 3/2 2y + 3x = -4 2y = -3x -4 y =-3/2 -2 y-intercept = -2 Now use y = mx + b to write your equation
*February 9, 2013*

**math**

Area of a parallelogram is Base times the height. Multiply 5.2 cm times 2.3 cm.
*February 9, 2013*

**stats**

Usually students who study consistently will have a high grade point average. If you graphed this, you would have a graph that is rising to the right and have a strong correlation. Think about not studying and having low grades on the left side of your graph and studying ...
*February 9, 2013*

**statistics**

13 and add 8 = 21 add 8 = 30 and add 8 =38. So, 32 falls between 2 and 3 standard deviations. 40 - 13 = 27, 32 falls within one standard deviation. February is more likely. You could also take 32 -13 =19 and divide by 8 to get z = 2.375 32-40 = -8 divided by 13 to get z = -....
*February 9, 2013*

**math**

You have to move your decimal point two places to the right in the divisor (.06) and the dividend (1.702) so you are actually dividing 170.2 by 6
*February 9, 2013*

**math**

If it is okay to have blue green red and red green blue as a different flag...then you will have 60 possible flags. For the first stripe you have 5 choices, for the second 4 choices and for the last 3 choices = 60 flags. If you cannot have the same colors in a different order ...
*February 9, 2013*

**math**

You have 7 choices for chairman and then 6 choices for vice-chair. So, that gives you 42 possibilities. This is correct because order is important.. Joe and Sam is different from Sam and Joe.
*February 9, 2013*

**math**

The first spot you have 4 choices The second spot you have 3 choices The third spot you have 2 choices The fourth spoty you have 1 choice. 4 times 3 times 2 times 1 = 24 different ways since order matters
*February 9, 2013*

**maths**

Think of 15x^2 - 20x + 8
*February 9, 2013*

**math**

Write in y = mx+b form. 10y = -2x + 10 y = -1/5 (x) + 1 If x = 5, y = 0 If x = 3, y = -3/5 + 1 or 2/5 If x decreases by 2, then y decreases by 2/5 of a unit.
*February 8, 2013*

**MAth**

You have to convert feet to centimeters here. change 102 feet to inches by multiplying by 12. Then convert inches to centimeters. 1 inch = about 2.5 cm, so divide the inches by 2.5 to get centimeters. Then take a ratio with the 12 cm. I think the scale is 40:1.
*February 8, 2013*

**MATH**

You have to subtract 63 from both sides of the equation set = 0. then factor and set each factor equal to zero to solve for x.
*February 8, 2013*

**Physical Science**

a. Increase NO2 b. Increase teh N2O4 c. reduce No2 d. increase N2O4
*February 8, 2013*

**chemistry**

If 50.0 mL of 0.150 M magnesium bromide is combined with 200 mL of 0.110 M sodium bromide what is the molarity of the bromide ion in the resulting solution? (assume volumes are additive)
*February 8, 2013*

**Spanish**

9. el cumpleanos de mi hermana 10. true 11. false, generally is another color like pink, blue or any other bright color but white because white is used if you are a bride. 12. yes but not quiet it is because the young girl becomes a woman. (I am a native Spanish speaker)
*February 7, 2013*

**algebra1**

(msqaured+3) (5m+n) is the answer 5mcubed+17mn+3n
*February 7, 2013*

**Math**

Categorical data is what could be put into categories" countries, types of trees. Quantitative has numerical values that could be averaged, etc. you are correct with your answer. And you could say that you have an average of 12.25 years of education.
*February 6, 2013*

**history**

Homework question:In the 4 centuries following Jesus' death, Christianity (A) excluded women from leadership roles in thechurch (B) rejected all teachings and writings of Jews (wrong0 (C) created a church without a hierachy where all members were equal (D) defined ...
*February 3, 2013*

**ENGLISH, HELP?**

Thank you guys for the help! All my answers were correct. I just wanted the extra opinion. :)
*February 1, 2013*

**ENGLISH, HELP?**

I have two more questions; Read the following passage from Through My Eyes: After the first day, I was glad to get home. I wanted to change my clothes and go outside to find my friends. My mother wasn’t too worried about me because the police had set up barricades at each...
*February 1, 2013*

**ENGLISH, HELP?**

In the following sentence, which words should be in quotation marks? Did you read the chapter Chemical Reactions in our science textbook, Understanding Chemistry? A. chapter Chemical Reactions B. Chemical Reactions C. Understanding Chemistry I think the answer is B, as it is a...
*February 1, 2013*

**math**

s to the 4th power t to the -6 power expnad this
*January 29, 2013*

**ENGLISH HELP?? 2 QUESTIONS.**

Ms. Sue, both my answers were correct. I changed the first one to A and got it wrong. Just letting you know. Thanks anyway.
*January 29, 2013*

**ENGLISH HELP?? 2 QUESTIONS.**

Can you answer two questions for me? Thanks!! "On average each of us consumes nearly 53 gallons of water a day at home. Some citizens of water-poor countries survive on as little as 4 gallons a day. We've grown used to seeing water flow out of our taps and down the ...
*January 29, 2013*

**us history**

what happened as a result because of the whiskey rebellion
*January 23, 2013*

**us history**

i still cant find the problems it had
*January 23, 2013*

**us history**

what problems did the us have in the n.w. territory
*January 23, 2013*

**us history**

what issue needed to be settled before the smalller states agredd to the articles of conferderaton'' is it what to do with western lands
*January 15, 2013*

**us history**

i need the answer from one of mine
*January 15, 2013*

**us history**

thank you so its who got to vote
*January 15, 2013*

**us history**

i still cant find the answer
*January 15, 2013*

**us history**

What issue needed to be settled before the smaller states agreed to the articles of confederation?. A:how to pay taxes B:ho to pay debts C;what to do with the western lands d:who got to vote
*January 15, 2013*

**algebra**

turn 2x-y-4>0 into y equal
*January 2, 2013*

**Physics**

A circus performer begins his act by walking out along a nearly horizontal high wire. He slips and falls to the safety net, 25.0 ft below. The magnitude of his displacement from the beginning of the walk to the net is 26.7 ft. (a) How far out along the high wire did he walk?
*December 28, 2012*

**math To MS.SUE**

Ms sue i really want a hundred percent on one algebra test im in algebra and im so smart and good at math but the thing is in my class we tooken 4 tests and on all of then i only got one wrong whit the most minor common mistake i dont understand just one question wrong i ...
*December 16, 2012*

**Statistics of Psychology**

Create a numerical and verbal hypothesis statement: People who are cyber bullied have, for the most part, been bullied in more traditional manners as well." Their research showed that the incidence increased over time, with 23 cases (56%) taking place between 2003 and ...
*December 9, 2012*

**Statistics of Psychology**

Create a numerical and verbal hypothesis statement: People who are cyber bullied have, for the most part, been bullied in more traditional manners as well." Their research showed that the incidence increased over time, with 23 cases (56%) taking place between 2003 and ...
*December 9, 2012*

**math**

jjj
*December 3, 2012*

**physics**

no idea
*November 29, 2012*

**MRP Operations Managment**

On Hand is the quantity of the item that is on hand at the beginning of period 1. Lead time is the amount of time from when an order is placed to when it arrives. See page 278. Lot Size - LFL means lot-for-lot, we order material only as it is needed. See page 282. Lot size &#...
*November 28, 2012*

**chemistry**

5.20
*November 14, 2012*

**7th grade social studies Ms. Sue please**

Yes they are all correct :)
*November 13, 2012*

**math question**

Thanks.:)
*November 13, 2012*

**math question**

How do you write 1/2 as a percent?
*November 13, 2012*

**math**

Thanks
*November 8, 2012*

**math**

0.46*50=23 votes right
*November 8, 2012*

**math **

In the election 46% of the class voted for Celina. If there are 50 members in the class, how many votes did Celina receive?
*November 8, 2012*

**VERY URGENT math question**

Thanks
*November 7, 2012*

**VERY URGENT math question**

40 popcorn balls? I am right i think.
*November 7, 2012*

**VERY URGENT math question**

Owen was stacking popcorn balls on a table. He put sixteen balls on the table. He added three more layers. Each layer had four fewer balls than the previous layer. How many popcorn balls in all did Owen put on the table?
*November 7, 2012*

**math**

You kinda hurt m fellings I am only 7 years old and in 2nd grade you know.
*November 7, 2012*

**math**

How many pounds of candy selling for $2.25 a pound should be added to four pounds of candy selling for $4 a pound to create a blend, which will sell for $3.25 a pound?
*November 1, 2012*

**Math**

An airplane flying at a speed of about 100 mph was once overtaken and passed by a flock of sandpipers! Suppose that a flock of these birds can fly at 110 miles per hour with a certain wind and at 90 mph against it. If they fly a certain distance with the wind and the same ...
*October 24, 2012*