# Questions Asked onJune 15, 2014

1. ## algebra

Kyle has a total of 16 coins in his pocket. All the coins are nickels or quarters, and they have a total value of \$2.20. How many nickels does Kyle have?

2. ## Algebra

In their last basketball game, Becky scored twice as many points as Min. Together, they scored 42 points. How many points did Becky score?

3. ## physics

a string supports a solid iron object of mass 180g totally immersed in liquid of density 800kg/m3. calculate the tension in the string if the density of iron is 8000kg/m3.

4. ## Precalc

Are exponential equations the same as exponential functions? I am writing a summary of this year's Pre-Calculus lessons and one of the topics on the outline is "Exponential Equations", but on the lesson Power Points on my teacher's website there is only

5. ## Math

1. Find the 12th term of the arithmetic sequence 2, 6, 10, … . 2. Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3. 3. In the sequence 2, 6, 10, … , what term has a value of 106?

6. ## Algebra 2

The highest speed reached by a solar powered vehicle is 48.71 mph. This record was set by a Sunracycer on June 24, 1988 in Meza, AZ. How far could this car travel in 2.5 hrs at this speed.

7. ## algebra

The digits of a two-digit number sum to 8. When the digits are reversed, the resulting number is 18 less than the original number. What is the original number?

8. ## Chemistry

In aqueous solution, hydrochloric acid, HCl, and sodium carbonate, Na2CO3 react to produce gaseous carbon dioxide, CO2, water, H2O and sodium chloride, NaCl. A 10.0 g impure sample of Na2CO3 is dissolved completely in water; then treated with 3.00 mol

9. ## chemistry

calculate the percentage by mass of oxygen in trioxonitrate(v) acid

10. ## calculus

Eric is standing on the ground, a distance of 70 ft from the bottom of Ferris wheel that has a 20 ft radius. His arm is at the same height as the bottom of the Ferris wheel. Janice is on Ferris wheel which makes one revolution counter clock wise every 16

11. ## Math

angles ABC and XYZ are complementary angles. if m < ABC is 18 more than three times m < XYZ, find < XYZ i have no idea how to do this i know that something has to equal 18+ 3m but i don't understand the (

12. ## physics

A submarine dives down to a depth 9.5 beneath the surface of the ocean. Calculate the pressure in atmospheres at that depth, assuming the density of water is 1029 kg/m3, and the air pressure at the surface is 101.5 kPa

13. ## Physics

In 1926, Johnny Weissmuller set the men’s world 400.0-m swimming record in 4.00 min, 57.0 s. In 1966, Martha Randall set the women’s record in 4.00 min, 38.0 s. By how many meters would Martha have been beaten Johnny if they had raced each other?

14. ## algebra

. A professor has RM 15000 to invest for one year, some are 8% and the rest are at 7% annual interest. If she will earn RM 1100 from these investments, how much did she invest at each rate?

15. ## physics

If two stones projected from the same point with the same speed but at angles pi/3 and pi/6 respectively have their ranges R₁ and R₂ then a)R1=2R2 B)R1=R2 C)R1=5R2 D)R1=25R2

16. ## physics

a box of treasure with a mass of 92 kg and volume of 0.031metrecubic lies at the bottom of the ocean.how much force is needed to lift it?

17. ## Statistics

Assume that a standardized test is designed to have the mean score of 100 and the standard deviation of 15. At the 95% confidence interval, how large does the sample size have to be if the margin of error is to be 3 points?

18. ## physics

Which one of the following statements about an object performing Simple Harmonic Motion is TRUE? Select one: a. The object reaches its maximum speed as it passes through the equilibrium point. b. The object’s velocity is never zero. c. The object has a

19. ## Maths

A radioactive substance decays exponentially in such a way that after 50 years, 60% of the initial amount remains. Find an expression for the quantity remaining after t years.

20. ## Chemistry

Benzene sulfonic acid, C6H5SO3H, is a strong acid and will neutralise sodium hydroxide solution (a 1:1 molar ratio). Benzene sulfonic acid crystals (y grams) were weighed into a titration flask and titrated against sodium hydroxide solution (1.0 M) and

21. ## Math

Solve for the 1st term of the arithmetic sequence whose 33rd term is -2p and whose 61st term is 26p.

22. ## math

What is the answer of X' cap Y What is the answer of Y' U Z' What is the answer of (X \ Z ) ' What is the answer of ( Y \ Z ) ' U X ' X={10 ,20 ,30 ,40 ,50} Y={30 ,50, 60, 90, 100} Z={40, 50, 60, 70, 80} U={200, 300}

23. ## Physics

To qualify for the finals in a racing event, a race car must achieve an average speed of 225 km/h on a track with a total length of 1.4 km. If a particular car covers the first half of the track at an average speed of 205 km/h, what minimum average speed

24. ## chemistry

calculate the percentage by mass of ozygen in trioxnitrate5 acid H-1, N-14, O-16

25. ## chemistry

What is the chemical formula of ketohexose?

27. ## Chemistry

how many millimeter should be taken out to prepare 0.5 normal HCL solution of 200 ml. density=1.18, purity 37% please response soon

28. ## physics

as Sue runs, her knee joint passes through the following vertical positions (meters): Frame 1: .043 Frame 2: .145 Frame 3: .21 Frame 4: .39 Frame 5: .415 The data were collected at a frequency of 100 Hz. What was the vertical velocity of her knee joint at

29. ## physics

A spring and mass system are oscillating with an amplitude of 8.4 cm. The spring constant is 204 N/m and the mass is 540 g. Find the mechanical energy of the system to 2 sf.

30. ## Physics

Assuming the best high jump record from a standingposition in a school was 1.52 m, what initial velocity was needed for this jump? Neglect any sideways motion.

31. ## maths

She adds the to number together and divides the result by 2her answer is 44 one of EMilys numbers is 12what is Emilys other number?

32. ## math

When four times the number is added to 7 times the number, the result is 33, what is the number?

33. ## analytical chemistry

Determine the concentration of iron in an aqueous solution containing 0.2810 grams of Fe(NH4)2(SO4)2 per liter of solution. Express the concentration in mg/dl.

34. ## Physics

The diagram shows a weightlifter in the initial stages of his lift. He lifts two 70 kg masses connected to a 10 kg bar. In addition, there are two upward forces : 795N and 810N a. Calculate the total weight that he is lifting? b. Calculate the size of the

35. ## algebra 2

1.Which system of equations represents this situation? Let d be the number of toy cars that Dan has and let j be the number of toy cars that Jacob has. 2.how many toy cars does Jacob have?

36. ## Algebra

What are the coordinates of X2-2 where 1 is more than or equal to x and 2x where x is less than 1? NOTE: X2 is x squared.

37. ## HCA 311 Health Care Financing & Information System

Using the example of “From the Front Lines” in Chapter 6 of your text, calculate the break even for the number of procedures. Use an electronic spreadsheet to show how you computed the break even and embed the spreadsheet in your paper. Discuss the

38. ## physics

If h is 5m and the mass takes 3 s to move the distance d when starting from rest, what is the distance d? PLEASEEEEEE!!!!

39. ## com 200

Kyle has struggled to feel comfortable in science classes with labs since his junior year of high school, when a solution he was working with ignited. He was always cautious with chemicals but his lab partner that year enjoyed seeing what would happen when

40. ## Algebra 2

Kendra pays \$35 plus \$5/hr to rent a scooter. Write an expression for how much she pays for renting a scooter h hours. How much does she pay for renting 6 hrs?

41. ## physics

a strong 100 kg man pushes down hard on the left piston. What happenes to the 10 kg mass on the right? The answer is the moves down, lifting the left piston despite the strong man. BUT WHY?

42. ## Highcschool

Which one of the characters you read about is 12 years old? A. The narrator’s daughter in “The Yellow Wallpaper” B. Ginger Nut in “Bartleby” C. Lily Dyer in “A New England Nun” D. The son of the old man in “The Tell-Tale Heart

43. ## algebra

The population of Arizona was 4.2 million in 2000 and 6.9 million in 2008. If the population grew exponentially, which one of the following models the population as a function of time (in years since 2000)?

44. ## math

Differences between the external angle and n-1 sides regular polygon and n+2 side regular polygon is 6 degree then what is the each external angle

45. ## science

what is the difference between erosion transport and deposition????????????????????

46. ## physics

A mass of 2.9 g is hanging underneath a spring which has an unknown spring constant. The period of oscillation is 5.5 seconds. Find the spring constant in N/m. Give your answer to 2 s.f.

47. ## Algebra 2

you purchase 12 packages of wrapping paper. large packages cost \$7 & small cost \$4.50. Write & simplify an expression that represents the total cost if n of the 12 packages are large

48. ## Algebra 2

An equilateral triangle with side length 2" will have a height of square root 3 inches. A yield sign is an equilateral triangle with perimeter of 5 ft. To the nearest inch, what is the height of the yield sign?

49. ## bbb4m

6.) How did "interdependence" and the principle of trade replace "self-sufficiency" among Aboriginals in Canada?

50. ## English

Which of these two sentences is correct? Is there a different correct format? This construction is different than in English. This construction is different from English.

51. ## Algebra II

Find the error in each of the following and provide an explanation of the mistake made. Thanks for the help. a) (3x/1/x-5)^1 =1/3x/x-1/5 b) (3x/1/x-5)^1 =-3x/5-1/x c) (3x-4y)^2 = 9x^2 + 16y^2 d) x^2-3/4+x^2=-3/4

52. ## Math

An open-ended regular hexagonal prism whose length is 15cm and whose cross-section has a perimeter of 24cm. Find the surface area.

53. ## Geometry

How do you find the lengths of the sides of an isosceles triangle with three medians?

54. ## math

Compute Sun Jung's estimated tax payment for the second quarter. She is self-employed and she expects to earn \$61,760 this year. Her estimated income tax rate is 23%. For self-employed persons, social security tax is 12.4% of wages up to \$106,800, and

55. ## Math

Solve for the 101st term of the sequence: 6-p, 4+p, 2+3p, 5p, … .

56. ## physics

a pendelum in a fathers clock measures .90m from the support to the centerof the bob

57. ## Math

You have a 50 cm x 50 cm card board. Squares with side length h are cut out of the corners and the sides are folded up to make a box. What polynomial represents the volume of the box formed?

58. ## chemistry

To 50 mL of this buffer, 10.0 mL 0.76 M soium hydroxide was added, what is the pH of the resulting solution after equilibrium has been re-established

59. ## math

to build a 2.5 m by 3 m deck, a local building supply store chargers \$1000 for materials, plus the carpenter's wage of \$30/h. The store gives you an estimate of \$1480 for the total cost. How much time is estimated for the carpenter to build the deck?

60. ## statistics

A graph representing the distribution of the oral temperatures of 50 healthy adult males (selected at random) would best be described as?

61. ## Math

What are the formulas for 3-D figures?

62. ## motion analysis

Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker 5

63. ## physics

a skater is sliding forward on a flat rink at 6 m/s. her mass is 71 kg. the sliding friction acting on her skate blade is 13.4 N acting backward. air resistance is 14.7 N acting backward. what is her horizontal acceleration?

64. ## Algebra II

I wrote out the word pie in place of the actual symbol. Consider (pie n+pie n-1)(pie n-pie n-1)= 1 for n greater than or equal to 1. a) Provide two numerical examples illustrating its validity. b) Show the statement is true in general. c) What is the

65. ## tourism

i want to write an brief article linking history and tourism.the rise of heritage