# Questions Asked onJune 1, 2020

1. ## math

Dina and Masha start cycling on a 20 km bike path at the same time. When Dina reaches the end of the path, Masha still has 4 km of the path left to cycle. If Dina’s cycling speed is 10 km/h, how much time longer will Masha need to complete the path? PLZ

2. ## history

Please help ASAP!!!! I need to know the answer within a few minutes!!! What tensions have built because of concerns about the climate change theory? The climate change theory has created tensions in third-world countries that produce the largest amount of

3. ## Physical Science

A bicycle pump contains 250 cm3 of air at a pressure of 90 KPa. If the air is compressed, the volume is reduced to 200 cm3. What is the pressure of the air inside the pump?

4. ## World History

What was the First Industrial Revolution? A) the period of new technology that shifted the focus from industry to the spread of information B) the period when modern science emerged and transformed views on society, politics, and nature C) the period of

5. ## Mathematics

1-sin2x/cosx=tan(π/4-x)

6. ## Mathematics

The three term of a GP is 20 and 8 term is 640 find the common ratio. The first term and 10 term of a GP

7. ## Chemistry

A radioactive substance has a half-life of 3 minutes. After 9 minutes, the count rate was observed to be 200. What was the count rate at zero time?

8. ## PreCalculus

How would I find cos(u/2) if sec u =13.465 and u is in Quadrant-IV (assume that 0

9. ## math

Two boxes contain pictures of hockey and basketball players. In one box, the ratio of hockey players to basketball players is 4:3. In the other box, the ratio is 3:2. The boxes contain the same number of pictures. a) What could the total number of pictures

10. ## precalculus

Which statement describes the graph and orientation of the parametric equations x=9cost and y=9sint? A.The graph is a circle with a radius of 3. The orientation is counterclockwise as t increases. B. The graph is a circle with a radius of 9. The

11. ## Precalculus

A ball is thrown with a slingshot at a velocity of 95 ft./sec. at an angle of 25 degrees above the ground from the height of 6 ft. Approximately how long does it take for the ball to hit the ground? Acceleration due to gravity is 32 ft./s^2. A. 2.65

12. ## Statistics

You would like to determine the percentage of coffee drinkers in your university, and collected the following binary data set from random students on campus, 1 for coffee drinker and 0 for otherwise: 0,0,0,1,1,0,1,0,1,1,1,1,0,0,0,1,0,1,0,0,0,0,0,1. Let Yi

13. ## Math

Carlos kept track of how much cereal he ate for 2 months and found that he ate 208 ounces of cereal in that time.how many pounds is that?

14. ## mathematics

How is the interquartile range of a data set different from the standard deviation of a data set?

15. ## Math

In this problem, a ‘word’ is a string of letters, each of which is A, B, or C. A word is ‘interesting’ if every letter A must be followed by a B unless the A is the last letter of the word. Note that there do not have to be any As, however. For

16. ## math

please help In a class library, 3 out of 4 books are non-fiction. The rest are fiction. How many non-fiction books could there be? How many fiction books? How many different answers can you find for part a? Which answers are reasonable? Explain. thank you

17. ## Mathematics

John and Ernest are close friends.ernest is 5 years younger than John. in ten years John's age will be 3 times Ernest age. Find their ages.

18. ## Physics

A 8 cm object is placed 1 cm in front of a concave mirror with a focal length of 12 cm

19. ## poetry

who is the speaker in the poem my guilt by Agnes

20. ## math

Write the Recursive Formula for the given sequence. -1, -5, -25, -125, -625

21. ## maths

f(x)={x²+1 if x≤2 {(x-3)² if x≥2 They said Lim x=>2^(-) f(x)=? lim x=> 2^+ f(x)=? But I don't know how

22. ## Physical Science

A hiker, of mass 80 kg walks up a mountain, 700 m above sea level, to spend the night at the top in the first overnight hut. The second day she walks to the second overnight hut, 400 m above sea level. The third day she returns to her starting point, 200 m

23. ## Physical Science

A hiker, of mass 80 kg walks up a mountain, 700 m above sea level, to spend the night at the top in the first overnight hut. The second day she walks to the second overnight hut, 400 m above sea level. The third day she returns to her starting point, 200 m

24. ## Physical Science

Steel, an alloy, would be classified as a (n)

25. ## Physics

How does quantum field theory account for fundamental forces acting over a distance? I am not sure as to what the question is asking.

26. ## math

please help with explination. this has alreay been answered by oobleck but i still dont understand. In one store, the ratio of DVDs to videos is 7:5. In another store, the ratio of DVDs to videos is 4:3. Explain why you cannot say which store has more

27. ## Science

What are some Positive effects of Genetic Engineering and Negative effects of Genetic Engineering.

28. ## Math

Write the Recursive Formula for the given sequence. 1, 4, 16, 64, 256, ... a(n+1) = a(n) * -4; a(1) = 1? a(n+1) = a(n) * -3; a(1) = 1? a(n+1) = a(n) * 4; a(1) = 1? a(n+1) = a(n) * 3; a(1) = 1?

29. ## Math

a paper towel company's new product division creates a paper towel made from a new mix of cellulose fibers. The new paper towels cost 20% more to manufacture than the original paper towels. After testing 500 new paper towels, they find that the mean

30. ## Mathematics

H(x)=-t ^ 2 +8t

31. ## World History

What was Eurocentrism? A) the belief that manufacturing centers should be located in Europe B) the belief that European civilization was superior to other cultures C) the belief that European languages were superior to other languages D) the belief that

32. ## Mathematics

cos B= 0.5299

33. ## Precalculus

A bowling ball is rolled down the alley with a constant with a constant velocity of 1.5 m/sec. at an angle of 87 degrees to the starting line. The position of the person throwing the bowling ball can be represented by the point (0,0). Where is the ball

34. ## mathematics

While at a beach, Melody takes a sip out of a coconut for some fresh coconut milk. Melody drinks 0.095 L of coconut milk. Write the amount of liters in scientific notation.

35. ## mathematics

According to the u s geological survey there are over 332,519,000 cubic miles of water on the planet.Write this number in scientific notation.

36. ## Health

Create a simple plan that show how many calories you should consumer to maintain your ideal weight.

37. ## Maths

If it takes Polly the Painter 1 hour to paint a bedroom floor that is 9 feet wide and 12 feet long, how long will it take her to paint the living room floor, which is twice as wide and twice as long?

38. ## Math

how many books is a reasonable amount in a library (on average)

39. ## math

A rectangular box has a volume of \$4320\$ cubic inches and a surface area of \$1704\$ square inches. The sum of the lengths of its \$12\$ edges is \$208\$ inches. What would be the volume of the box, in cubic inches, if its length, width and height were each

40. ## economics

Which of the following are mentioned in the video as things to keep in mind, when picking the best life insurance option? Consider the non-numerical items, not just the numerical items Age matters Always pick the one with the lowest cost per year Dividends

41. ## Math

Dividing Exponents Hi! I was simplifying the problem 4^4/4^6 I tried ways of simplifying I learned in the lesson, and I got the answer 1/2 or 4^-2 The problem is, none of the choices I was given match those. I've tried redoing it several times, and I still

42. ## history

1. When did Russia's “Red October” Revolution take place? (Time and Place)

43. ## math

zoe needs at least \$30 to buy a gift she has \$12 . witch ends in quality could zoe use to find out how much more money (m) she needs...

44. ## Math

Write the Explicit Formula for the given sequence. -16, -9, -2, 5, 12, ...

45. ## social studies

How did mechanization of agriculture affect population distribution in South America

46. ## history

What happened before, during, and after the Holocaust in Europe during World War 2? someone please help

47. ## Physical Science

A herder is herding his sheep into the corral. A mother sheep and its lamb are both running at 3.0 m/s towards the corral. The sheep has a mass of 60 kg and the lamb has a mass of 20 kg. a. What is the kinetic energy of the sheep. b. What is the kinetic

48. ## mathematics

a used car dealer wants to know the mean mileage of the cars currently in his lot. Rather than checking all of the cars, he samples 25 cars and finds that the mean mileage of the sample is 12,456.25. Assuming a standard deviation of 225 miles a confidence

49. ## Mathematics

In a right rectangular pyramid with base edges a=18 cm and b=10 cm the slant height towards a is k=13 cm while the slant height towards b is l=15 cm. Find: The surface area of the pyramid

50. ## Chemistry

1). Explain why a substance is considered a strong electrolyte, weak electrolyte, or non-electrolyte. 2) List two factors that might influence the conductivity of aqueous solutions.

51. ## Chemistry

Make your prediction if you were working with these bases: NaOH, Ca(OH)2, Al(OH)3. 1) The graphs, slope of the lines if the concentrations are the same. Which would have the greatest? Which would have the smallest? 2) What would account for the difference

52. ## Precalculus

Given the function y=x^2-4, write the parametric equations that would allow the same path for x=t-3. A. x=t-3, y=t^2-6t-13 B. x=t-3, y=t^2-6t+9 C. x=t-3, y=t^2-6t+5 D. x=t-3, y=t^2-6t