Thursday
April 24, 2014

Posts by Jen


Total # Posts: 3,253

7th grade
This is a homework help website. You just post the subject, instead of grade, and ask a specific question. For example, if you don't understand how to do a math problem, post "math" for subject, and then post the problem.

algebra
I think you set it up like this..not positive though: 4(8n+6)=2(13n+2)+30n-28

science
Correct.

math
I'm sorry anonymous! You're right, I'm wrong.

math
10^3= 10000 Put the decimal after the 10 and move it over 3 places. Do the rest that way.

Math
I'm not sure, sorry.

Math
48? It appears that the x's are counting by 2's, and the y's are counting by 10's (starting at 8).

algabra II
No, we do not have nor would we give answers.

Math
It's not a multiple choice question, Bridgett, it's a multiple part question. Heather, I'll do part a for you and then you can do the rest the same way. You are just substituting into the equation. 3x^2+2x-3 (make sure this is right, I think you had a typo) a) x=-2...

math
Yup, Bridgett is right.

math
2.5 x 10^2=__x10^3 2.5 x 10^2= 250 .25 x 10^3=250 The exponent tells us how many places to move the decimal. If the exponent is positive, move it to the right. If the exponent is negative, move it to the left.

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

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.

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

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.

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

MATH
4.8

5th grade math
I'm pretty sure she meant 3142, 6328, & 4743.

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.

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).

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.

college algebra
Please see your other post, and avoid re-posting the same question.

math
Correct.

Teachers Aide/Early Childhood Education and After-
I think 17 is A.

math
-8+-7=-15

english
Good job!

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.

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.

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?

math
26x>90 solve for x, x would be rounded up to the nearest whole number

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

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.

math
evaluate the following when x=-3, if possible /x/=/-3/=3 -x^2=-3^2=9 -(1+x)=-(1-3)=--2=2

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 ...

algebra
2x+3y=8 Bob said to subtract 3y from each side: 2x=-3y+8 Then divide by 2.. x=(-3y+8)/2

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

Teachers Aide/Language and other Barriers
I think it's B.

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

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 ...

math
No

math
8-7(4)+8(2)-13 8-28+16-13= Put those numbers into a calculator to solve.

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.

algebra
You just want to get v by itself. p=mv Divide both sides by m p/m=v

algebra
Try this one. I helped you with two.

algebra
Try to do this one. I helped you with two. Post your answers if you want them checked.

algebra
First subtract b from both sides. y-b=mx Then divide both sides by m (y-b)/m=x

Science
What are your choices...?

English
and you can't say #3

math
1.13 x 10^6

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

math
2^3-7(2)^2+8(2)-13 8-28+16-13=? Not -31

science
but #1 cant be true because that isnt the definition for model

science
for 1. it is a model 2. it says prediction number 3 says hypothesis-based is this all true

science
there isnt

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.

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?

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

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.

8th grade
-x-6=-5 Add 6 to both sides. -x=1 So that means that x=-1.

6th grade
3.75+4/8=7.75/8=.96875

reading
How much time did Goodall spend with the chimps each day? Why is this meaningful?

reading
What was Jane Goodall's strategy for getting close enough to the chimpanzees to observe them?

physics
ooh.. ok. thanks :)

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. Estim...

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.

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

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

Writhing in Math
What is the least possible number you can write with a 1 in the thousands place

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.

algebra
Yes.

geometry
ef+fg=eg, so 2x-19+3x-16=25, go from there

writing
I'm assuming it means to write a tale that you learned from. Write about when you learned an important lesson.

math
I'll give you a start..3/4-2y/4=1/4, 3-2y=1...

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.

math
62 tens and 4 ones

math
Disregard this post; check your other one.

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

math
18-8= Disregard your other post.

Memorial High School
Post a problem that you are having trouble with..

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.

Math
Yes.

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?

algebra
I only checked 7 and 20..both are wrong.

Physics
what is the speed?

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?

A&P
I think it might be anatomy and physiology.

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

4th grade
Shanya, Do 3 x 6 and then count the amount of zeroes in that problem and put that many 0's after.

arithmetic
5y-5x+z..This is as far as you can go unless you have more information

COM156
Run out of things to say/writers block

math
Does 6(3)-6(7)=-2?

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.

6th grade Math
4y+7=51 4y=44 y=11 Are you sure you wrote that correctly? There is no need for that parenthesis.

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.

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? M...

English
What is the book you are writing about? What's the main theme of it?

MATH
26=30-36a -4=-36a 1/9=a

MISSING INFORMATION
What is the "correct" problem? There is information missing. Please clarify.

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.

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.

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