Thursday

November 26, 2015
Total # Posts: 3,369

**Algebra**

-3x-5y=61 (1) 7x-5y=-9 (2) Looking at the equations, we can multiply either of them by -1 to cancel the y's. Let's do that to the 2nd one. -3x-5y=61 -7x+5y=9 Then add the equations together. -10x=70 x=-7 Plug that back into either original equation to solve for y.
*November 17, 2010*

**algebra**

3.50x
*November 17, 2010*

**Math**

2/5x=6 That's the total bill. Heather paid 3/5 of that.
*November 17, 2010*

**Math**

24=2 * 2 * 2 * 3
*November 17, 2010*

**geometry**

Rose, Damon answered the one for you. Try these the same way. Put them in y=mx+b form (solve for y). Post your work if you want them checked or need further help.
*November 16, 2010*

**Math**

5 7/8 * 4
*November 16, 2010*

**4th grade**

It's not a number sentence because it doesn't have the answer. Ms. Sue wrote the full number sentence out for you.
*November 16, 2010*

**MATH HELP ME 1st**

It's identity. That was one of your choices, you spelled it wrong.
*November 16, 2010*

**MATH HELP ME 1st**

What Daniel said, and then divide that by 4.
*November 15, 2010*

**4th grade**

You can diagram the array for 4 x 30 and 4 x 6 and then add them together.
*November 15, 2010*

**math**

Whole numbers mean don't use a fraction!
*November 15, 2010*

**9th grade algebra**

Answer for A: 2004-2005 Do B the same way.
*November 15, 2010*

**Geometry**

Thanks MathMate.
*November 15, 2010*

**Geometry**

Please imagine a triangle here. >.< the 'o' is a person and the two peaks are the mountains. /\___/\ _\___/ ___o Explain why the distance between these two peaks are greater than the difference of the distances from the person to each peak.
*November 15, 2010*

**Physics**

So it does not obey the law of inertia?
*November 14, 2010*

**Physics**

Does an object moving in a circle obey the law of inertia? Which way would it move if there were no net force on it?
*November 14, 2010*

**math correct or not?**

Yes for both. Good job.
*November 14, 2010*

**math**

x-350. Or -350.
*November 14, 2010*

**math**

Billy shops every how many days? You left out an important piece of information.
*November 14, 2010*

**Spanish**

Es la una y cuarto. Son las cinco menos cuartos. Son las siete y diez.
*November 14, 2010*

**math-algebra**

3x+2y=7 3x=-2y+7 x=-2/3y+7/3 2(-2/3y+7/3)-3y=-4 -4/3y+14/3-3y=-4 Combine like terms, solve for y, replace y in either original equation to solve for x. Post your work to get it checked.
*November 14, 2010*

**Language Arts**

No
*November 14, 2010*

**Algebra**

A much easier way to do this would be: 1) x+y=1300 2) x+2z=1400 3) x+y+z=1600 Look at 1 and 2. Since x+y=1300 and x+y+z=1600, z obviously equals 300. Now substitute that back in #2. x+2(300)=1400, x+600=1400, x=800. Now substitute x and z back in #3. x+y+z=1600, 800+y+300=1600...
*November 13, 2010*

**bus475**

What are your choices? Did you look up the word "oligopoly"?
*November 13, 2010*

**typos**

Please fix your post.
*November 13, 2010*

**algebra - college**

11x+8y=103 (1) 22x-7y=68 (2) Multiply (1) by -2 to cancel the x's -22-16y=-206 (3) 22x-7y=68 (2) Add them together. -23y=-138 Divide by -23 y=6 Now substitute y=6 into either equation (1) or (2) to solve for x. Post your work and answer if you'd like it checked.
*November 13, 2010*

**College Algebra**

Radical 10, please don't repost questions! I took the time to solve this for you when it was already done.
*November 13, 2010*

**College Algebra**

You just plug them in and see if both are true. If they are, it is a solution. -(6)-8(2)=-22 -7(6)+3(2)=-36
*November 13, 2010*

**College Algebra**

Try this one using the steps in the problem I did for you as a guide.
*November 13, 2010*

**error**

7-7/2x=-5 -7/2x=-12 Multiply both sides by -2/7 x=3 3/7
*November 13, 2010*

**math**

-10-(-10) Two negatives become a positive so -10+10= ?
*November 13, 2010*

**correction**

9t=27t-9 9t-27t=-9 -18y=-9 y=1/2
*November 12, 2010*

**Physics **

0.21
*November 12, 2010*

**math**

What?
*November 12, 2010*

**math50**

Yes, because they can both be divided by 5. Divide the numerator by 5 and that's your new numerator. Divide the denominator by 5 and that's your new denominator.
*November 12, 2010*

**Math, Please help :/**

You typed something wrong. Please fix your third sentences.
*November 11, 2010*

**Math**

x+y=3742 x=y-44 y-44+y=3742 2y-44=3742 2y=3786 y=1893 Now plug that back into either of the first two equations to solve for x.
*November 10, 2010*

**math**

Bob Pursley told you how to find it. Re-read his response.
*November 10, 2010*

**math**

41/84=.488
*November 10, 2010*

**Spanish 1**

54. When do you go/are you going to the shopping center? A. February 6 B. The two C. Thursday D. The fourth (plural) 56. Correct. It says "I would like to play tennis after classes today." 57. Correct. Tomorrow I'll go to the park. Parque is masculine so el would...
*November 10, 2010*

**algebra**

4p+3q=36 (1) 9p+6q=78 (2) You want to eliminate either the p's or q's to solve for one. Eliminating the q's is easier because you only have to change one equation. Multiplying (1) by -2... -8p-6q=-72 (3) 9p+6q=78 (2) Add the equations together. p=6 Now substitute p...
*November 10, 2010*

**algebra**

30 and 66
*November 10, 2010*

**4th grade**

Sixty seven thousand
*November 10, 2010*

**mat 116**

-8x-27=-32 1/3 Add 27 to both sides. Divide by -8.
*November 8, 2010*

**2nd grade**

Seventy four.
*November 8, 2010*

**Math**

Good job!
*November 7, 2010*

**Math**

The hypotenuse is always the longest side and across from the right angle. So which letter does that match up with?
*November 7, 2010*

**Math**

No, the directions said to round to the nearest tenth. 6.122 rounded to the nearest tenth is 6.1.
*November 7, 2010*

**Spanish 1**

5 is right. (Still not sure about 9. Stuck between C and D.)
*November 7, 2010*

**math**

None of them are equal to -1. Please check your signs and post again. All of the answers will be positive.
*November 7, 2010*

**Spanish 1**

Try again on these: 1. It's asking what Juan is like. 5. Look up how you say Si, me gusta and no me gusta in a sentence. 8 is correct. I think 9 is also correct but I'm not 100% positive on that one.
*November 7, 2010*

**math**

3z=13 z=13/3 or 4 1/3 8x-y+(13/3)=22 8x-y=17 2/3 Should the last equation say 2x or 2z? I can't go any further until I know that.
*November 7, 2010*

**english**

You already asked this question. Have you read the book? I already know the answer from just reading the wikipedia page about it.
*November 7, 2010*

**Math**

Putting this information into the exponential growth formula gets you the equation y=100(2^x) where x equals the number of hours. Plugging in 12 for x, you get 409600.
*November 7, 2010*

**englis**

Obesity?
*November 6, 2010*

**math **

Distributive, maybe?
*November 6, 2010*

**math**

The 67% is right, but not 375. Move the decimal over 2 places to the right, not 3. Try again.
*November 6, 2010*

**math**

No, move the decimal 2 places to the right.
*November 6, 2010*

**Five Number Summary**

It's not 6, Renee. You have to solve for x in the equation I made for you. (8+5+10+3+x)/5=6 (26+x)/5=6 26+x=30 x=?
*November 6, 2010*

**Five Number Summary**

(8+5+10+3+x)/5 = 6
*November 6, 2010*

**College Algebra**

Agreed, Kelly. Good for you. I think what Reiny was getting at is at the origin the point is (0,0) so it is possible. Not 100% positive though.
*November 6, 2010*

**College Algebra**

Why do you have to make degrading comments all the time? Either help or don't.
*November 6, 2010*

**math**

x+4y=-16 (1) 3x+2y=12 (2) Multiply (1) by -3 to get the x's to cancel -3x-12y=48 (3) 3x+2y=12 (2) Now add (3) and (2) together. -10y=60 Divide by -10. y=-6 Substitude y=-6 into equation (1) or (2) to solve for x.
*November 5, 2010*

**agebra**

L=laser tag, V=video games 3L+5V=17 (1) 4L+7V=23 (2) Since the question asks only about the video games, we want to eliminate the L's. We can do this by multiplying the first equation by 4 and the second equation by -3. 12L+20V=68 (3) -12L-21V=-69 (4) Add 3 and 4 together...
*November 5, 2010*

**Math**

The digit is 6.
*November 5, 2010*

**math**

1, 3, 9, 27, 81, 243, 729, 2187 (you just had to multiply each number by 3 to get the next)..now add all of these numbers together
*November 5, 2010*

**8th grade**

Is just the 3 to the zero power or the 5-3?
*November 5, 2010*

**math**

Get out a calcutor and do 1/8, then move the decimal two places to the right and put a percent sign after that number.
*November 5, 2010*

**English: Vocab**

Definitely not! What are you trying to say?
*November 4, 2010*

**math**

.68 * 13 = 8.84
*November 4, 2010*

**math**

3x+4=5x-7 You want to get the x's on one side and numbers on the other. First, subtract 3x from both sides. 4=2x-7 Now add 7 to both sides. 11=2x Divide both sides by 2. 11/2=x 5 1/2=x
*November 4, 2010*

**english**

You are the one with the writing lab..we do not have access to that.
*November 4, 2010*

**algebra1**

y=mx+b
*November 4, 2010*

**Algebra1**

7 feet tall? Wow, he is tall. I would agree with Jay.
*November 4, 2010*

**math**

5 15/100=5 3/20..as a mixed number 103/20 (denominator stays the same, multiply the 5*20 then +3 to get 103)
*November 4, 2010*

**fractions word problems fifth gradee**

They are both right. The easiest way to do this is to make a proportion, though. 2.5/30=x/120, Cross multiply 30x=300, solve for x.
*November 4, 2010*

**math**

9+6=15, 10+5=15
*November 3, 2010*

**math**

2.9166667 is not the same as 2 1/2. 2 1/2 would be 2.5. You could say 2.9 feet.
*November 3, 2010*

**math**

She is not going to give you the answer. The answer is what you get when you do 35 divided by 12.
*November 3, 2010*

**3rd grader math homework**

Bethany has 40 apples. She gave 17 to her brother. How many does she have left? 40-17=23
*November 3, 2010*

**math**

Yes, good job!
*November 3, 2010*

**math**

favor of choosing a boy: # of boys/# of total students, reduce odds against choosing a boy: # of girls/# of total students, reduce Post if you want it checked.
*November 3, 2010*

**Reading**

Chapter 12 "I find a Real Live Man" Sam enjoyed taking baths in the spring he used the bark of a slippery elm for soap. Jessie C. James would help sam dig up mussel. Frightful was a expert in hunting so sam and him could eat rabbit stew, pheasant potpie, and sparrow...
*November 3, 2010*

**math**

The arithmetic post was already answered. Kim, please post a new question instead of "tagging" on the end of someone else's. 1/3 of a number can be written as 1/3x (or any other letter attached).
*November 3, 2010*

**math**

3a+8=15-(9a-9) 3a+8=15-9a+9 3a+8=24-9a 12a+8=24 12a=16 a=16/12 a=1 1/3
*November 3, 2010*

**Math**

.27 repeated..because 3/11 is less than 1, see that? There is no whole number in front of the fraction so it can't be 3.6.
*November 3, 2010*

**algebra**

16/2t=2 8t=2 t=2/8 t=1/4
*November 3, 2010*

**Spanish**

1. You would say "Si, estudio mucho" because it's asking do you study a lot and you would typically respond yes, i study a lot (as opposed to yes, i like to study a lot). Do the same thing for #2.
*November 3, 2010*

**algebra**

-13(4+2a)=208 Distribute -52-26a=208 Add 52 to both sides -26a=260 Divide both sides by -26 a=-10
*November 3, 2010*

**math**

100.0
*November 3, 2010*

**math **

Yes, but what you had should have been 147/1000=.147 Did you not see my post?
*November 2, 2010*

**5th grade**

Pat, I already told you. The first one should be 700,000.
*November 2, 2010*

**5th grade**

1. 189,103+504,200=693,303 Estimate would be 200,000+500,000=700,000. I'm assuming you have a typo and forgot the 0 for that option
*November 2, 2010*

**business math**

Debbie, we've told you to post your efforts if you want help.
*November 2, 2010*

**business math**

Debbie, we've told you to post your efforts if you want help.
*November 2, 2010*

**5 th grade**

Nice work, Pat! Good explanation, Amy!
*November 2, 2010*

**business math**

Debbie, we've told you to post your efforts if you want help.
*November 2, 2010*

**5th grade math**

No, 10*100=1000, not 10,000 so your decimal would be .147
*November 2, 2010*

**math 5th grade**

Jill, they can all be divided by 5.
*November 2, 2010*