Sunday

July 5, 2015

July 5, 2015

Total # Posts: 3,334

**science**

How does the pH of rainwater vary throughout the United States in Texas, California , Pennsylvania Kansas , Massachusetts and, Washington ? thank you
*September 29, 2010*

**math**

1, 2, 3, 4 to make 7 (4+3)x(2-1) 13 (4x3)+(2-1) 17 and 39, I can't think of..keep playing around with the numbers.
*September 29, 2010*

**Math**

Is this 3x+23=7x? Or is there a sign between the 7 and x? If it's 3x+23=7x.. 23=4x 23/4=x
*September 29, 2010*

**Algebra**

You just found out what they have in common. All of the terms have at least an x^2, so you can take that out. All of the numbers can be divided by 2, as well, so your GCF is 2x^2.
*September 29, 2010*

**Algebra help**

(x-1)^2=sqrt6^2 Take the square root of both sides. x-1=sqrt6.. you have to know how to finish from here
*September 29, 2010*

**5th grade math**

I'm pretty sure she meant 3142, 6328, & 4743.
*September 28, 2010*

**5th grade math**

The first step is to add those numbers up. Let me know what you get and I'll tell you what to do from there.
*September 28, 2010*

**algebra**

r+s=10 2r+4s=27 Multiply the first equation by -2 to cancel the r's. -2r-2s=-20 2r+4s=27 2s=7 s=3.5 Put s back into either original equation to solve for r (the first one would be easier).
*September 28, 2010*

**spanish**

What are the man and the children like in the painting? Who is the woman, and what relationship is between her and the girls. Write a description of the three people.
*September 28, 2010*

**college algebra**

Please see your other post, and avoid re-posting the same question.
*September 28, 2010*

**math**

Correct.
*September 28, 2010*

**Teachers Aide/Early Childhood Education and After-**

I think 17 is A.
*September 28, 2010*

**math**

-8+-7=-15
*September 28, 2010*

**english**

Good job!
*September 28, 2010*

**math**

xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx 4 x 8 = 32 The first number always goes down and the second number always goes across because 4 x 8 = 32 means 4 groups of 8. You can use any symbol, not just X's.
*September 28, 2010*

**math**

Find the two closest squares to 61 which is 64 and 49, so you know it has to be between the whole numbers 8 and 7.
*September 27, 2010*

**math**

An elf has a staircase with 10 steps to climb. Each step it takes can cover either one stair or two stairs. In how many ways can the elf climb the stairs?
*September 27, 2010*

**math**

26x>90 solve for x, x would be rounded up to the nearest whole number
*September 27, 2010*

**4th grade**

x + y = 40 x = y + 12 Use substitution to plug the second equation into the first. y + y + 12 = 40 2y + 12 = 40 2y = 28 y= 14 Plug y = 14 back into either top equation, x = 26
*September 27, 2010*

**math**

Prime means the number cannot be divided by any other numbers besides itself and 1. Composite is when the number can be divided. Try using a calculator to see if those numbers are divisible, or use divisibility tricks if you know them.
*September 27, 2010*

**math**

evaluate the following when x=-3, if possible /x/=/-3/=3 -x^2=-3^2=9 -(1+x)=-(1-3)=--2=2
*September 27, 2010*

**math probelm need serious help!!!**

Please have patience. Sometimes responses could take more than a few minutes. 4x-(9-3x)= 8x-1 Distribute 4x-9+3x=8x-1 Combine like terms 7x-9=8x-1 Get the variables (letters) on one side and numbers on the other.. Add 9 to both sides. 7x=8x+8 Subtract 8x from both sides. -x=8 ...
*September 26, 2010*

**algebra**

2x+3y=8 Bob said to subtract 3y from each side: 2x=-3y+8 Then divide by 2.. x=(-3y+8)/2
*September 26, 2010*

**Math**

It's quickest to change them all into decimals, and then arrange them: 2/3=.67 repeating (.666666etc7) 3/5=.6 31/50=.62 67/100=.67
*September 26, 2010*

**Teachers Aide/Language and other Barriers**

I think it's B.
*September 25, 2010*

**math **

Order of operations says to do parenthesis first. 2(-5+2)-3(3-4)-5 2(-3)-3(-1)-5 -6+3-5 -3-5=-8
*September 25, 2010*

**Math**

Lay out sixteen cards: the Ace, Two, Three and Four of all four suits (hearts, clubs, diamonds, and spades). Two players alternately turn down a card and add it to the common score, and the player who makes the score 22, or forces his or her opponent to go beyond 22, wins. To ...
*September 25, 2010*

**math**

8-7(4)+8(2)-13 8-28+16-13= Put those numbers into a calculator to solve.
*September 25, 2010*

**math**

Try this by plugging in -3 wherever an x is. Look at your other post to see how I did that one, since they're similar.
*September 25, 2010*

**algebra**

You just want to get v by itself. p=mv Divide both sides by m p/m=v
*September 25, 2010*

**algebra**

Try this one. I helped you with two.
*September 25, 2010*

**algebra**

Try to do this one. I helped you with two. Post your answers if you want them checked.
*September 25, 2010*

**algebra**

First subtract b from both sides. y-b=mx Then divide both sides by m (y-b)/m=x
*September 25, 2010*

**Science**

What are your choices...?
*September 25, 2010*

**English**

and you can't say #3
*September 25, 2010*

**math**

1.13 x 10^6
*September 24, 2010*

**algebra**

Wouldn't it just be 16x+10,000=21x? Do you know how to go from here?
*September 24, 2010*

**math**

2^3-7(2)^2+8(2)-13 8-28+16-13=? Not -31
*September 24, 2010*

**science**

but #1 cant be true because that isnt the definition for model
*September 24, 2010*

**science**

for 1. it is a model 2. it says prediction number 3 says hypothesis-based is this all true
*September 24, 2010*

**science**

there isnt
*September 24, 2010*

**science**

i need help at these. thx 1.the statement, " all living things are made of cells" is an example of _______. 2. a controlled experiment helps to eliminate the effects of unwanted ________. 3. ________ science emphasizes inquiry and observation.
*September 24, 2010*

**math**

If this is a right angle why does Henry not use the pythagorean theorum? Since the distances are just the speeds (thanks to the 1 hour) wouldn't it be X^2 + (4x+200)^2 = 2050^2?
*September 24, 2010*

**math**

Is this 7 1/3-2 5/6 (seven and one third minus two and five sixths)? Make sure to include spaces next time. If so... 7 2/6-2 5/6= 6 8/6-2 5/6= 1 3/6= 1 1/2
*September 24, 2010*

**Math**

You need to take the middle term (which is 18), take half of it (9) and square it (81). You then add that number to both sides.
*September 24, 2010*

**8th grade**

-x-6=-5 Add 6 to both sides. -x=1 So that means that x=-1.
*September 23, 2010*

**6th grade**

3.75+4/8=7.75/8=.96875
*September 23, 2010*

**reading**

How much time did Goodall spend with the chimps each day? Why is this meaningful?
*September 23, 2010*

**reading**

What was Jane Goodall's strategy for getting close enough to the chimpanzees to observe them?
*September 23, 2010*

**physics**

ooh.. ok. thanks :)
*September 23, 2010*

**physics**

A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. ...
*September 23, 2010*

**6th grade**

Area could be 2 x 24, 3 x 16, 4 x 12, 6 x 8 (and vice versa). Perimeter equals 2L+2W. If the area was 2 x 24, the perimter would be 2(2)+2(24)=4+48=52. Do this with the 3 x 16, 4 x 12, and 6 x 8, and see which has the smallest perimeter.
*September 23, 2010*

**algebra**

4r-28+3>5r+10-23 4r-25>5r-13 Add 25 to both sides. 4r>5r+12 Subtract 5r from both sides. -r>12 Divide by negative one, so you have to switch the sign. r<-12
*September 23, 2010*

**math**

d+c=14 4d+2c=36 Multiply the top equation by -2. -2d-2c=-28 4d+2c=36 2d=8 d=4 c=10
*September 23, 2010*

**Writhing in Math**

What is the least possible number you can write with a 1 in the thousands place
*September 23, 2010*

**math**

14-8x<16 Subtract 14 from both sides. -8x<2 Divide both sides by -8. x>-1/4 The sign changed because we divided by a negative.
*September 23, 2010*

**algebra**

Yes.
*September 23, 2010*

**geometry**

ef+fg=eg, so 2x-19+3x-16=25, go from there
*September 22, 2010*

**writing**

I'm assuming it means to write a tale that you learned from. Write about when you learned an important lesson.
*September 21, 2010*

**math**

I'll give you a start..3/4-2y/4=1/4, 3-2y=1...
*September 21, 2010*

**chemistry**

Commercially available concentrated sulfuric acid is 18.0 M H2SO4. Calculate the volume (in mL) of concentrated sulfuric acid required to prepare 1.60 L of 0.320 M H2SO4 solution.
*September 21, 2010*

**math**

62 tens and 4 ones
*September 21, 2010*

**math**

Disregard this post; check your other one.
*September 21, 2010*

**math**

Are the 2's exponents? What sign goes in the middle? If this is (-6)^2 (-4)^2, it would be 36(16)=
*September 21, 2010*

**math**

18-8= Disregard your other post.
*September 21, 2010*

**Memorial High School**

Post a problem that you are having trouble with..
*September 20, 2010*

**Math**

I think it would just be c/5, since there are 5 people. If c=20, each person would get 4, so it makes sense.
*September 20, 2010*

**Math**

Yes.
*September 20, 2010*

**Math**

9, 18, 27, 36, 45, 54, 63, 72, 81.. The tens column keeps getting bigger by one and the ones column keeps getting smaller by 1. Do you mean multiples of 11 for the second question?
*September 20, 2010*

**algebra**

I only checked 7 and 20..both are wrong.
*September 20, 2010*

**Physics**

what is the speed?
*September 19, 2010*

**physics**

If you heat a thin, circular ring in the oven, does the ring’s hole get larger or smaller? When the lid of a glass jar is tight, holding the lid under hot water for a short time will often make it easier to open. Why?
*September 19, 2010*

**A&P**

I think it might be anatomy and physiology.
*September 19, 2010*

**algebra 1**

42/60 divide both by 6 and you get 7/10..try the rest on your own and someone can check the answers for you
*September 19, 2010*

**4th grade**

Shanya, Do 3 x 6 and then count the amount of zeroes in that problem and put that many 0's after.
*September 19, 2010*

**arithmetic**

5y-5x+z..This is as far as you can go unless you have more information
*September 19, 2010*

**COM156**

Run out of things to say/writers block
*September 19, 2010*

**math**

Does 6(3)-6(7)=-2?
*September 18, 2010*

**alegebra**

It's false because when you have two whole numbers such as 5 and 2, under division it becomes 5/2 (or 2 1/2), which is no longer a whole number.
*September 17, 2010*

**6th grade Math**

4y+7=51 4y=44 y=11 Are you sure you wrote that correctly? There is no need for that parenthesis.
*September 16, 2010*

**8th grade**

Common are obviously the ones that each number has in common. List both, like I did above, and see which numbers are in both groups. Post specific questions with your answer if you'd like them checked.
*September 16, 2010*

**8th grade**

Factors-a number can be evenly divided without a remainder Examples: Factors of 16 are 2, 4, 8. Factors of 24 are 2, 3, 4, 6, 8, 12. Multiples-result of multiplying by a whole number. Examples: Multiples of 2 are 2, 4, 6, 8, 10, etc. See how you are just counting by 2's? ...
*September 16, 2010*

**English**

What is the book you are writing about? What's the main theme of it?
*September 16, 2010*

**MATH**

26=30-36a -4=-36a 1/9=a
*September 16, 2010*

**MISSING INFORMATION**

What is the "correct" problem? There is information missing. Please clarify.
*September 16, 2010*

**math**

What you have above is 5+7=7+5, which is a true statement. This is the commutative property because switching the numbers around does not effect your answer in this case.
*September 16, 2010*

**6th grade math**

3/4 x 5/7 x 1/2 All you had to do was coming up with three numbers that multiplied to 15 (those were your numerators, or top numbers) and come up with three numbers that multiplied to 56 and have them as your denominators, or bottom numbers.
*September 16, 2010*

**Math Problems**

She did answer the questions. I think that's what the = sign is that she put by each problem.
*September 16, 2010*

**math**

Please re-read what you wrote and fix it. It can't be "less four". That doesn't make sense.
*September 15, 2010*

**algebra**

g+5=2h-6
*September 15, 2010*

**math**

Associative property, because the parenthesis are just moved around.
*September 15, 2010*

**math**

Commutative means you just switch the numbers around and get the same answer.
*September 15, 2010*

**A gift of money**

That's a strange question..
*September 15, 2010*

**geometry**

Supplementary means adds up to 180. Complementary adds up to 90. -10x+53-5x-8=180
*September 15, 2010*

**5th grade**

The mode is the number that occurs the MOST. Which number here do you see more than any other number?
*September 14, 2010*

**11th grade math**

4(x^2-4x+3) You can factor this further by seeing which 2 numbers subtract to 4 (your middle term) and add to 3 (your last term). Post if you want it checked/need help.
*September 14, 2010*

**math**

I'm not positive, but I think you do it like this. Check my work based on your notes/textbook. 6C2=6!/(6-2!)2!=6!/4!2!=6X5X4X3X2/4X3X2X2=(cross out 4x3x2 on the top and bottom)=30/2=15
*September 14, 2010*

**verb and noun**

The noun is the person, place, or thing. The verb is the action.
*September 14, 2010*