Thursday

April 17, 2014

April 17, 2014

Total # Posts: 27

**Math- 5th grade**

Thanks Tony, but the answer is supposed to be 1/5 on this one. Again, Singapore math makes no sense to me! I will ask the teacher...

**Math- 5th grade**

Shauna baked bread rolls to sell at a school fair. 2/5 of the rolls were chocolate rolls, 1/3 were raisin rolls, 1/4 of the remainder were strawberry rolls, and the rest were vanilla rolls. What fraction of the rolls were vanilla rolls?

**Math**

Thanks, but the answer is supposed to be 3 1/5 kg. Not sure how they came up with that. I see where/how you came up with your answer. This Singapore math makes no sense!

**Math**

Mrs. Thomas bought 5 kg of flour. She used 1/5 of it to make muffins and 1/5 of the remainder to make cookies. How much flour did she have left?

**Trig**

Height of an Obelisk Two people decide to find the height of an obelisk. They position themselves 25 feet apart in line with, and on the same side of, the obelisk. If they find that the angles of elevation from the ground where they are standing to the top of the obelisk are 6...

**math**

You are right because you have to have the number plus three together before you can figure out what twice the sum of the 2 numbers is.

**Science**

What role does induction play when lightning strikes Earth?

**Singapore Math**

Thanks "drwls" but do you know how to solve that problem using the bar model method? I know what the answer is. I just don't know how to draw it like you do in Singapore math. Thanks...

**Singapore Math**

Lily and Sara each had an equal amount of money at first. After Lily spent $18 and Sara spent $25, Lily had twice as much as Sara. How much money did each of them have at first?

**chemistry**

133

**Physics**

You are pulling a suitcase thru the airport at a constant speed. The handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. If you pull with a force of 7.5 N parallel to the handle, what is the force of friction acting on the suitcase?

**Statistics**

From a statistical point of view why a company might want to report its mean salary in one situation and its median salary in another?

**Math**

To determine the number of deer in a game preserve, a conservationist catches 443, tags them and then lets them loose. Later, 528 deer are caught and 176 are tagged. How many deer are in the preserve? What formula do I use to find the answer to this? Thank you for helping if y...

**Math**

The lcm for... (1+3t) (1-9t)^2 (1-3t) Answer 9t^2 or (3t+1)(-3t+1) I'm not sure which answer I have is right, could you help me please.

**Algebra**

I am stumped on this one... and I typed it in wrong. f(x)=5x^2-2x, find f(t+2)

**Algebra**

Find the function value. Given that f(x) = 5x2 - 2x, find f(t + 2).

**Algebra**

yeahoooo ty ty ty =)

**Algebra**

I was wondering if I had number 2 correct; the only way to know the answer was to provide the entire answer for number 1. Thanks in advance. 1. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the p...

**Algebra**

Sorry, it didn't paste the first time, I was wondering if I got these correct; especially number 2 at the bottom. 1. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then m...

**Algebra**

(3k^3)^6

**Algebra**

I have to determine how long a pvc pipe is. The altitude is 8, the base is 12. How would I go about finding the answer to this problem? I came up with 8^2*12/2^2 sqrt is 100 which equals to 10 is that right?

**Algebra**

If the square root is 338 and I'm asked to round to the nearest thousandth, how is the answer 18.385? I don't understand how to formulate that answer?

**Algebra**

Elena bicycles 6 km/h faster than Dennis. In the same time it takes Dennis to bicycle 45 km, Elena can bicycle 63 km. How fast does each bicyclist travel?

**Algebra**

The last problem I have that I can't solve either and it's driving me nuts. Assume b,c ‚ 0 (4b^2c^3)^4

**Algebra**

I can't figure this out. (f^4/g^5)^7

**History**

I think it sounds good... the beginning could be changed where you put Words are cheap like rewording it to become one whole sentence instead of a 3 word sentence. Just a thought. =) Other than that, I think you did an awesome job!

**economics**

what is studied in microeconomies?

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