# Posts by Jen

Total # Posts: 3,568

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.

algebra
3.50x

Math
2/5x=6 That's the total bill. Heather paid 3/5 of that.

Math
24=2 * 2 * 2 * 3

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.

Math
5 7/8 * 4

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

MATH HELP ME 1st
It's identity. That was one of your choices, you spelled it wrong.

MATH HELP ME 1st
What Daniel said, and then divide that by 4.

You can diagram the array for 4 x 30 and 4 x 6 and then add them together.

math
Whole numbers mean don't use a fraction!

Answer for A: 2004-2005 Do B the same way.

Geometry
Thanks MathMate.

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.

Physics
So it does not obey the law of inertia?

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?

math correct or not?
Yes for both. Good job.

math
x-350. Or -350.

math
Billy shops every how many days? You left out an important piece of information.

Spanish
Es la una y cuarto. Son las cinco menos cuartos. Son las siete y diez.

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.

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...

bus475
What are your choices? Did you look up the word "oligopoly"?

typos

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.

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

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

College Algebra
Try this one using the steps in the problem I did for you as a guide.

error
7-7/2x=-5 -7/2x=-12 Multiply both sides by -2/7 x=3 3/7

math
-10-(-10) Two negatives become a positive so -10+10= ?

correction
9t=27t-9 9t-27t=-9 -18y=-9 y=1/2

Physics
0.21

math
What?

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.

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.

math
Bob Pursley told you how to find it. Re-read his response.

math
41/84=.488

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...

Math
85

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...

algebra
30 and 66

Sixty seven thousand

mat 116
-8x-27=-32 1/3 Add 27 to both sides. Divide by -8.

Seventy four.

Math
Good job!

Math
The hypotenuse is always the longest side and across from the right angle. So which letter does that match up with?

Math
No, the directions said to round to the nearest tenth. 6.122 rounded to the nearest tenth is 6.1.

Spanish 1
5 is right. (Still not sure about 9. Stuck between C and D.)

math
None of them are equal to -1. Please check your signs and post again. All of the answers will be positive.

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.

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.

english

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.

englis
Obesity?

math
Distributive, maybe?

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

math
No, move the decimal 2 places to the right.

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=?

Five Number Summary
(8+5+10+3+x)/5 = 6

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.

College Algebra
Why do you have to make degrading comments all the time? Either help or don't.

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.

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...

Math
The digit is 6.

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

Is just the 3 to the zero power or the 5-3?

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.

English: Vocab
Definitely not! What are you trying to say?

math
.68 * 13 = 8.84

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

english
You are the one with the writing lab..we do not have access to that.

algebra1
y=mx+b

Algebra1
7 feet tall? Wow, he is tall. I would agree with Jay.

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)

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.

math
9+6=15, 10+5=15

math
2.9166667 is not the same as 2 1/2. 2 1/2 would be 2.5. You could say 2.9 feet.

math
She is not going to give you the answer. The answer is what you get when you do 35 divided by 12.

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

math
Yes, good job!

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.

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...

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).

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

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.

algebra
16/2t=2 8t=2 t=2/8 t=1/4

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.

algebra
-13(4+2a)=208 Distribute -52-26a=208 Add 52 to both sides -26a=260 Divide both sides by -26 a=-10

math
100.0

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

Pat, I already told you. The first one should be 700,000.

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

Debbie, we've told you to post your efforts if you want help.