Sunday

November 29, 2015
Total # Posts: 233

**4th grade math**

How many thousands are in 70,000? a) 7 b) 70 c) 700 d) 7,000
*January 14, 2009*

**4th grade English**

Today our entire class (was, are) excited about the talent show. Is was the correct answer for the sentence?
*January 9, 2009*

**4th grade Math**

Math has a 150 page book. he has read 1/3 of it. How many pages has he read so far? Is 50 the correct answer?
*December 15, 2008*

**4th grade English**

She told us about the different kinds of insects. Would told be present or past tense?
*December 10, 2008*

**4th grade English**

Which sentence is the correct way to write. A tick has no wings, but an insect does. A tick has not wings but an insect does.
*November 20, 2008*

**algebra**

how many solutions would -1.5x=2.5y=0 5x - 10y=6=0 have?
*October 4, 2008*

**4th grade English**

Gorillas are shy Most of them never fight. How would you combine this sentence using a conjunction. Would it be but or so?
*September 25, 2008*

**4th grade math**

What does computation method mean?
*September 24, 2008*

**4th grade science**

What are two reasons why scientists study earthquakes?
*September 22, 2008*

**4th grade science**

Where do you find the most debris on a glacier?
*September 13, 2008*

**4th grade science**

What kind of machine could you compare a glacier to? How are the two alike?
*September 13, 2008*

**4th grade**

Where on a glacier are moraines found?
*September 13, 2008*

**Science**

How long does desalination of ocean water to fresh water take?
*September 7, 2008*

**Biochemistry: Thermodynamic measurements **

Thermodynamic measurements in water reveal that the bidingin fo a Zinc Finger to target RNA has a delta H note of -7.2 kcal/mol and a delta S note of 12 cal/ mol K. What is the equilibium constant for the binding reaction at 25 degrees C?
*August 28, 2008*

**Science-Ecology**

State at least two advantages and two disadvantages of a pesticide that is low in toxicity and breaks down quickly. Thanks!
*January 21, 2008*

**Science-Ecology**

Why are amphibians good indicators of a health of an ecosystem?
*January 21, 2008*

**Science-Ecology**

Why are food chains typically limited to 4 or 5 trophic levels?
*January 21, 2008*

**the remainder theorem - Please Help!!**

i'm really not sure how to do this question. (3x+2k)^3+(4x-7)^2 has a remainder of 33 when divided by x-3. find k. i tried to expand the expression, but i don't get a polynomial, so how do i apply the remainder theorem? i would really appreciate it if anyone could tell...
*January 14, 2008*

**problems faced in conserving kalimantan rainforest**

thanks for all the help!
*December 23, 2007*

**problems faced in conserving kalimantan rainforest**

i need to know what are some problems and successes in the conserving of the kalimantan rainforest. i tried to find websites regarding this topic, but i couldn't find any with information. i would really appreaciate if anyone would be able to give me a few of such websites...
*December 23, 2007*

**maths, variations**

i'm not sure how this question works the number of hours (h) taken to paint a picture is inversely proportional to th number of pupils (p) painting it. it takes 4 pupils 3 hours to finish painting it assuming all pupils work at the same rate. a) find an equation connecting...
*December 18, 2007*

**maths, variations checking!**

question: given that y is inversely proportional to (x-1), A) express y in terms of x and a constant k b) give that y=5 when x=3, find x when y=25 answer: A)y=-k(x-1) y=-kx+k B)y=5, x=3, k(constant)=3x5 k=15 25=-15x+15 10=-15x x=-10/15 is this correct? i'm not too sure ...
*December 18, 2007*

**maths, variations**

question: if y is proportional to x, and that y=6 when x=12, (A)express y in terms of x, (B)and find to value of x when y=12. answer: (A) x=y/3 (B) x=4 is what i did correct? i would appreciate your help!
*December 18, 2007*

**Physics**

okay so this is what i did to find the work done by overcoming friction: Ff = .9 N d = .91 m (Ff x d = Wf --> .9 x .91 = .82 J) hmm okay so how would you find the work done by friction using that calculation that you just said (change in total energy = work done by friction...
*December 16, 2007*

**Physics**

One way that I found was knowing the force overcoming friction (Ff). so the equation to fin dthe work would be Wf = Ff * d.. as you said above (force*distance). But what other calculation would you use to find the wasted work without knowing the friction force?
*December 16, 2007*

**Physics**

There are two ways to find how much work is done voercoming friction. One method entails knowing the force overcoming friction. What other calculation could be done to find this wasted work?
*December 16, 2007*

**math**

yes
*October 23, 2007*

**Science**

sound
*October 17, 2007*

**science**

C) Water may evaporate rapidly
*October 6, 2007*

**chemistry**

i have to decide which one is more polar by using an arrow. 1. N-H 2. O-F 3.C-O Look up the electronegativity on a chart and take the difference between the two elements. The larger the difference the more polar.
*April 8, 2007*

**Geometery**

How do I solve this? On my assignment it says find the area inside the square, but outside the circle, given that the radius of the circle is 2 ft. Use 3.14 for ^ I have a picture of a square with a circle in the square, with a base 6 ft. and height 6 ft. Here are the choices ...
*March 1, 2007*

**word unscramble**

lorco tyssme
*September 28, 2006*

**Science (Chemistry!)**

I just do not understand ANYTHING about multiplying/dividing/adding/subtracting significant figures! For example, the problem is: Solve the following to the correct number of significant figures: (5.039)(0.0074) What am I supposed to do? Just multiply the numbers? What does ...
*August 31, 2006*