# Questions Asked onAugust 2, 2017

1. ## singapore math

Kim, Mei and yante collect stamps. Kim and Mei have 220 stamps more than Yanti. Yanti and Mei have 140 stamps more than Kim. Kim and Yanti have 500 stamps. How many stamps does Mei have?

2. ## Physics

When a body slides along an inclined plane of height 'h' and describes a vertical circle of radius r on reaching the bottom Ans:h =5R/2

3. ## Math

he wholesale cost of a delivery van is \$31,300. The original markup was 26% based on selling price. Find the final sale price after the following series of price changes: a markup of 46%, a markup of 15%, a markdown of 40%, and a markup of 14%. (Round each

4. ## Physics

A body is thrown up with a velocity of 78.4m/s.find how height will with rise and how much time if it take to return its point of rejection?

5. ## Science physics

A boy stands on the roof of a 50m tall building and thrown a ball horizontslly at 20m/s away from the building. How far away from the foot of the building will the ball land?

6. ## Math

A Texas oil drilling company has determined that it costs \$25,000 to sink a test well. If oil is hit, the revenue for the company will be \$500,000. If natural gas is found, the revenue will be \$150,000. If the probability of hitting oil is 3% and of

7. ## Math

The angles are adjacent and form an angle of 140.the smaller is 28 less than the larger

8. ## Economics - Finance

Your first baby was born yesterday and is healthy and strong. To guard against your premature death, you want to purchase a life insurance policy that will replace \$58,000 of your annual income until your child is 20 years old. How much life insurance

9. ## Finance - Family Planning

You want to save for your child’s education, you can either choose an account that is federally tax free that earns 6% or a regular taxed invested that earns 7%. If your marginal tax rate is 25%, which should you choose? (Show your work)

10. ## Math222

What is the domain of 4w2 – 9/ –5w

11. ## Math

There are 60 pupil in a class.out of them 25 play football, 20 play hockey and30 cricket,12 play football and hockey 9 play hockey and cricket play cricket and football. 5 play all the games.Find how many of them play. 1) none of the games 2)only cricket

12. ## Math

Place parentheses in the following equation to make it true. 6 + 6 ÷ 6 X 6 – 6 = 13 where do i put the parenteses

13. ## Math Trigonometry

Point P(k, 24) is 25 units from the origin. If P lies on the terminal arm of an angle in standard position, determine the measures of the angle(s)

14. ## Biology research paper

'We are currently in an energy crisis. After food, fossil fuels are humanity's most important source of energy. These resources take millions of years to make. We are currently using the fuels that were made more than 300 million years ago, before the time

15. ## calculus

Find the length of the curve given by the equation y= intergral from -pi to x of sqrt(cos(t)) dt for x between -pi and pi. I think I know to do this- at least part of it. I am using the fundamental theorem of calculus and the arc length formula, but I

16. ## Math

I want to enlarge a 8 and 1/2 inch by 11 inch drawing to about 12 by 16 inches on the copy machine. What per centage of enlargement should I set the copy machine? Thanks

17. ## math

river flows at rate of 1km/hr.a boat takes 2 times as long to row a distance in upstream as to row the same distance in downstream.the speed of boat instill water?

18. ## logic

40 matchsticks are arranged to form a 4 by 4 grid of 16 smaller squares. What is the fewest number of matchsticks that need to be removed so that there are no squares (of any size) remaining?

19. ## English

What is the specific technique of creative non-fiction at work in Keneally’s text, Schniders list

20. ## Chemistry

Find the number of molecules of sodium bicarbonate present in 5.08 gram

21. ## Calculus

Hi, I am trying to find a closed form for the power series from n=2 to infinity of x^n/(n-1)n. I'm not really sure how to do this- I found the first and second derivatives which were x^(n-1)/(n-1) and x^n-2. However, this didnt really seem to help much.

22. ## Physics

I really dont know how to do this one...Can someone please explain? Many thanks!!! a travelling microscope is focused on a mark on the base of an empty beaker.Now the microscope is raised up by 1 cm.and now for it be focused on the previous mark,how much

23. ## calculus

Use x=-1/2 in the MacLaurin series for e^x to approximate 1/sqrt (e) to four decimal places. So far I have |f^n(0)/n! (1/sqrt(e)-1/2)^n)|

24. ## Algebra or Math

If a hot dog stand sells 200 hot dogs for 3.50 in a week ,in addition to some number of sodas for \$1, how many sodas do they need to sell in order to have weekly sales of \$800

25. ## Physics

Two particles A and B has the same mass and are being kept on a rough horizontal table "d" distance apart.B is kept still and A is given a velocity of u towards B.After the collision,if A comes to its previous point show that, u^2 = 2agd[1+(1/e^2)] a-

26. ## algebra-math

exponential equation Solve for x 10^1^-x=10^4

27. ## math

160 days after borrowing money, Ms. garcia pays an interest of P 370.00. How much did she borrow if the simple interest rate is 8 1/2?

28. ## math

Find P if I=122; R=5 1/4% and T=9 months.

29. ## Physics PLS HELP

What is the difference between universal gravitational constant and acceleration due to gravity

30. ## Precalculus 11

Hello, I'm hoping someone can explain this to me: I'm ID-ing polynomials; -x^7-5x^4+(3/x)= not a polynomial .25x^3+3.9x^2-(x/3)= polynomial Why is 3/x not but x/3 is? Thanks a bunch! :)