Wednesday
February 10, 2016

# Posts by Jen

Total # Posts: 3,382

math
3-1/2x-7/2=18 -1/2-1/2x=18 -1/2x=18 1/2 x=-37
October 12, 2010

Probability
Vika, How many face cards are in a deck? If you don't know, look through a deck of cards or research online.
October 12, 2010

Probability
The odds against red means the same as the odds for black. There are 7 black beans out of 11 so 7/11.
October 12, 2010

math
49. You posted this the other day.
October 11, 2010

statistics
I did explain it, Mary. We already know that you have a 70 and 100. There has to be at least 82's since it's the mode (occurs the most). We can then solve for the missing number. (70+82+82+100+x)/5=76..x will be the last missing number.
October 11, 2010

statistics
70+82+82+100+x/5=76 (There has to be at least two 82's since it is the mode.) Solve for x, and that's the third unknown.
October 11, 2010

Algebra
9-9^2>10x-x 9-81>9x -72>9x -8>x or x<-8
October 11, 2010

math
It's the number cubed..1^3=1, 2^3=8, 3^3=27..now you can finish the pattern.
October 11, 2010

Algebra
-4-2n+4n>7-4 -4+2n>3 2n>7 n>7/2 or 3.5
October 11, 2010

math
Also, it has more digits so it has to be greater. Isn't 10 more than 5, and 200 more than 30?
October 11, 2010

Algebra
.3-.5n+1>=.4 1.3-.5n>=.4 -.5n>=-.9 n>=1.8
October 11, 2010

Because you would know 20*5=100 and to multiply anything by 100, you add 2 zeroes to the end of it, so it's 6300.
October 11, 2010

math
7+7, you find another way.
October 11, 2010

math
Please help me answer this.. Suppose that 2^(x/2)= p 3^(x/3-1)= q [5^(x/2)]/3 = r Express (0.48)^x in terms of p, q and/ or r. this question came from our reviewer.. please and thank you!
October 11, 2010

college math
Please help me solve this Find the value of k so that the polynomial Q(x)= x^3 - k^2x^2 + k(5x-9)- 12 has a remainder of 1 when divided by x + 2
October 11, 2010

6th grade - EARTH SCIENCE
What are three interesting facts about the upper mantle of the earth? and 3 interesting facts about the lower mantle of the earth?
October 11, 2010

math
3526..if it ends in 6, it will be divisible by 6. Can you think of others?
October 11, 2010

algebra I
3/4x-7=8+-6x Add 7 to both sides. 3/4x=15-6x Add 6x to both sides. 6 3/4x=15 Divide both sides by 6 3/4. 15/ 6 3/4=?
October 11, 2010

PHYSICS ---HELP!
The space shuttle releases a satellite into a circular orbit 700 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
October 11, 2010

English
You're welcome. :)
October 10, 2010

English
You could say 2, 3, and 5.
October 10, 2010

English
1. They were so happy that they forgot to eat their lunches.
October 10, 2010

maths m
-16(2)^2+64(2)+6= -16(4)+128+6= -64+128+6=
October 10, 2010

Chem
Water is added to 25 ml of a .911 M KNO3 solution until the volume of solution is exactly 500ml. What is the concentration of the final solution.
October 10, 2010

math
Sorry, I didn't finish and I accidentally hit enter. AB AC AD AE BC BD BE CD CE DE (E has already played all of the teams.) That's 10 games.
October 10, 2010

math
5 teams: ABCDE These teams will play each other: AB AC AD AE BC BD BE CD CE
October 10, 2010

TO MS. SUE
I actually experimented with the numbers for under 5 minutes, and got it. I'm not going to give you the answer but I will give you a hint that can help you get to the answer quicker. You are going to add all of the numbers, except 2 which you will multiply. Good luck.
October 10, 2010

TO MS. SUE
What do you need help with?
October 10, 2010

Maths
Just add 12 hours and get 2100 for the p.m. equivalent.
October 10, 2010

Spanish 1
You use ellos (them). You use ellas if you were talking about all females. If you are talking about all males or males AND females, you ues ellos. Usted (Ud.) is used as you, formal. Ustedes (Uds.) is used for when you're talking to a group of people and want to be formal...
October 10, 2010

It's value is 40.
October 10, 2010

math
I think it's 120.
October 10, 2010

math
width is 8, length is 10
October 10, 2010

math
-2x(4x^2-2x+1) You can use quadratic formula to factor the inside.
October 10, 2010

math
20(w^2+5w+2) Quadratic formula again..
October 10, 2010

No one is going to make the presentation for you. Is there anything specific you need help with?
October 10, 2010

grammar
Use she instead of her.
October 9, 2010

Chem
The sedative Demerol hydrochloride has the formula C15H22ClNO2. How many grams are in 0.020 mol of Demerol hydrochloride? I got 6.640g is this right?
October 9, 2010

Chem
Calculate the number of grams in 1.86 moles of K. I got 72.54g is this right?
October 9, 2010

math
This question makes no sense.
October 9, 2010

algebra
(1/2)/(5/8), change to percent. I think this is how you do it, hopefully someone will correct me if I'm wrong. Just a heads up that I'm not 100% positive on this one.
October 9, 2010

algebra
28.7-(.05*60)
October 9, 2010

math
Correct. Good job!
October 9, 2010

English
2. I would say I spoke with him yesterday is more formal.
October 9, 2010

math
3/5+4/5=7/5=1 2/5 x/3-y/3=x-y/3 7/a+2/a=9/a
October 8, 2010

I think that's too hard for him considering he's in fourth grade... Ok, so you have three digits ___ ___ ___ They must add up to 5.. Since you know the tens digit is three times the ones digit and all of your digits must be low to add up to 5, the tens digit must be a ...
October 8, 2010

algebra
x-6=10 Add 6 to both sides. x=16
October 8, 2010

math
Multiples of 6 that are 2 digits: 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96..Now which one has it's tens digit as half of it's ones digit?
October 8, 2010

essay
What do you need help with? Please post a specific question.
October 8, 2010

math
4.297*80=343.76 In standard notation, the decimal goes after the first digit and then you count how many places you moved the decimal and that's the exponent.. 3.4376 x 10^2
October 8, 2010

English
Everything looks good. The only thing I would change, if anything, is instead of "word cards", I'd just put "cards" because then you explain the cards.
October 7, 2010

Math
after 12y+36=36+12y.. the sides are both the same so y can equal anything
October 7, 2010

Math
4/60=___%
October 7, 2010

Algebra
4(x-2)=7(1+2x) 4x-8=7+14x Subtract 4x from both sides. -8=7+10x Subtract 7 from both sides. -15=10x Divide both sides by 10. -15/10=x Now reduce.
October 7, 2010

physics
Hi I have some graph problems I need help on. Sketch a graph of velocity vs. time. A cart is moving to the right on a horizontal surface while a constant net force of 3 newtons acts on it to the left. the force acting on the cart stops after a short period of time. At this ...
October 7, 2010

physics
ok so that means numbers 1 and 2 would be impossible, and I got for 4 that it could be possible if the object is getting heavier to pull. But for 3 I'm not sure. Thanks
October 7, 2010

physics
Hi I need help to figure out if these situations are possible or impossible thank you. constant velocity, non-zero net force constant speed, non-zero net force velocity to the left, net force to the right decreasing velocity, increasing magnitude of net force
October 7, 2010

Didn't I solve one similar to this earlier for you? Try this one. If you maximum is 18, you know your minimum has to be 18-13=___. Then put the median in the middle. Make sure you have more 7's than any other number. Then fill in random numbers.
October 7, 2010

math
331+193 This depends on whether you're rounding to the nearest 10 or 100. If rounding to the nearest 10, 331 rounds to 330 and 193 rounds to 190, so then you'd do 330+190. If rounding to the nearest 100, 330 rounds to 300 and 190 rounds to 200, so then you'd do 300...
October 7, 2010

Physics
I have this problem about drawing graphs. For the following 6 situations, sketch a graph of velocity vs. time. A cart is moving to the right on a horizontal surface while a constant net force of 3 newtons acts on it to the left> The force acting on the cart stops after a ...
October 7, 2010

Science
if a piece of copper has a mass of 20g and a volume of 10mL giving a density of 2g/mL, what happens to the density when the piece of copper is cut in half?
October 7, 2010

-r-10r=-11r (because -1-10=-11) n-4-9=n-13 (-4-9=-13) -4+7(1-3m)=-4+7-21m=3-21m
October 7, 2010

The square would have to have each side 2y.
October 7, 2010

2 2 3 4 4 5 5 6 6 6 7 8 First fill in the max. You know it has to be 8. The range of 6 tells you the min has to be 2 (8-6=2). You can then fill that in. The median has to be 5 so 2 5's in the middle spot will ensure that it's 5. The mode has to be 6, so we need at ...
October 6, 2010

A number cannot have greater than 7 tens and less than 8 tens. There is no number between 7 and 8.
October 6, 2010

Intermediate Algebra (Math)
You are good up until here.. -1.50x + 400 = 370 (this is correct) Then when you subtract 400 from both sides you get -1.50x=-30 Divide both sides by -1.5 x=20 lbs of pistachios, and 30 lbs of almonds
October 6, 2010

Intermediate Algebra(Math)
Your first row should be: 6.5x + 8(50-x) = 7.4(50)
October 6, 2010

17a^2=2209 Divide 2209 by 17. Then take the square root of that number.
October 6, 2010

algebra
2, 6, 6, 10
October 6, 2010

math
The 7th square number is 49, so it has to be bigger than that.
October 6, 2010

math
It's bigger than 49, and it must be a multiple of 10 (since it doesn't end in a 5)..so your choices are 50, 60, 70, 80, 90, etc..Now check your other conditions and find your number.
October 6, 2010

algebra
10+5y=77 Subtract 10 from both sides. 5y=67 Divide both sides by 5. y=67/5
October 6, 2010

Correct. You could actually check these problems yourself by plugging in your answers.
October 6, 2010

math
There should be more information..if not, what are the directions?
October 6, 2010

math
Boil it?
October 6, 2010

analogies
There's 100 cents in a dollar, there's 100 ______ in a meter.
October 6, 2010

math
5x+5=30
October 6, 2010

English
Yes, they are correct.
October 6, 2010

Algebra1
8+n=1 Subtract 8 from both sides. n=-7
October 6, 2010

Algebra
2x^2-3x-20=0 Use the quadratic formula.
October 6, 2010

Parenthesis means to do that operation first. The order of parenthesis changes the problem. Did you learn order of operations? PEMDAS. Look at the difference between these problems. (4+3)*2=7*2=14 4+(3*2)=4+6=10
October 5, 2010

algebra
False. The 3 is multiplied by 2 to get 6, and the 4 is multiplied by 3 to get 12. In order for the statement to be true, they would both have to be multiplied by the same number. 3/4=6/8=9/12
October 5, 2010

You need to add 2 digits plus 2 digits of the lowest numbers. 12 + 34 = ?
October 5, 2010

Math
4 x 6 = 24, Laura. Sorry Lola, I can't figure it out either.
October 5, 2010

Algebra
9m+2m-8=5(m-2) 11m-8=5m-10 Subtract 5m from both sides. 6m-8=-10 Add 8 to both sides. 6m=-2 Divide both sides by 6 and reduce. m=-1/3
October 5, 2010

Did you mean 3m=8? Divide both sides by 3 and get m=8/3.
October 5, 2010

algebra)
All you did was move around the paranthesis, so that's the associative property.
October 5, 2010

math
x+2y=10 3x+2y=18 Multiply the first equation by -1 to cancel the y's: -x-2y=-10 3x+2y=18 Now add the rows 2x=8 x=? Now plug that back into either original equation to solve for y.
October 5, 2010

math
(16+____) +(14-7)=18+22 16+____+7=40 23+____=40 ____=?
October 5, 2010

math
-2x(-6)=12x
October 5, 2010

english
What elements? You forgot to list them.
October 5, 2010