1. Math

The table shows two cell phone plans that offer free minutes for each given number of paid minutes used. Pablo has Plan A and Sam has Plan B Plan A Free Minutes=2 Paid Minutes=10 Plan B Free Minutes=8 Paid Minutes=25 a. What is Pablo's ratio of free to

2. Chemistry

Which of the following pairs would make a good buffer? A. H2C2O4 and HC2O4- B. HNO3 and NO3- C. NaOH and NaCl D. HCl and NaOH Would it be C? I think I remember learning about these in a lesson about buffers, hence why my instinct is to go with C...

3. Chemistry

For the reaction C2H4Br2+ 3KI>C2H4+2KBr+KI3, when the rate of reaction is 2.0x10^-5, what is the rate of disappearance of KI?

4. Math

Gina's art teacher mixes 9 pints of yellow paint with 6 pints of blue paint create green paint. Gina mixes 4 pints of yellow paint with 3 pints of blue paint. Did Gina use the same ratio of yellow to blue paint instructed by her teacher? Explain. My

5. chemistry

A mixture of SO3,SO2 and O2 gases is maintained in 10litre flask at which the Kc for reaction is 100 . If number of moles of SO2 and SO3 are equal then how many moles of O2 present.

6. PRE-CAL

Complete the table for the time t (in years) necessary for P dollars to triple when interest is compounded continuously at rate r. (Round your answers to two decimal places.) R=2% t=? tried to plug in as A=Pe^rt since continiously 3=e^.02t ? then take the

7. Physics

A person driving her car at 45km/h approaches an intersection just as the traffic light turns yellow. She knew that the yellow light lasts only 2s before turning red,and shi is 28m away from the near side of the intersection. Should she try to stop,or

8. physics

A vertical spring stretches 13 cm when a 2.3 kg block is hung from its end. (a) Calculate the spring constant. This block is then displaced an additional 3.2 cm downward and released from rest. Find the (b) period, (c) frequency, (d) amplitude, and (e)

9. Algebra

1)More than 450 students went on a field trip. Ten buses were filled and 5 more students traveled in a car. a) Write an inequality to represent the situation. Be sure to define your variable. b) Solve the inequality to find the minimum number of people on

10. Geometry

Find the point, M, that divides segment AB into a ratio of 3:2 if A is at (0, 15) and B is at (20, 0).

11. Math

A farmer uses 11/18 of his field for growing rice and 3/7 of the remaining field for growing tomatoes. Of the area thus left he uses 1/4 of it to grow spinach and the rest to grow sweet potatoes.What fraction of the field is used for growing sweet

12. Georgia History

1. Which of the following describes the Puritans? A) didn't have much success as planters B) made Sunbury into a thriving port*** C) came from the backcountry of Virginia D) came from Pennsylvania by way of North Carolina 2. Georgia’s slave code was

13. math- study question for final

You are given a sample of 106 body temperatures having a mean of 98.2 F and a standard deviation of 0.62 F. You are asked to test the hypothesis that the population mean body temperature is 98.6 F using a 0.05 significance level. What value should you use

14. maths

using a scale of 1:250 draw an accurate plan of a rectangular garden measuring 25m x 15m.

15. PRE-CAL

Complete the table assuming continuously compounded interest. (Round your answers to two decimal places.) Initial Investment== ? Annual % Rate== ? Time to Double== 11YRS Amount After 10 Years== \$1600 Using formula A=Pe^rt ?

16. Chemistry

an empty graduated cylinder weighs 82.450g. when gilled tp 50.0 mL with a liquid it weighs 110.810g. what is the density of the liquid?

17. physics

A 4.6 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.45 m above the counter?

18. physics

How much work is required to lift a 5.2-kg concrete block to a height of 3.1 m?

19. MATH

Dave takes out a 24-year mortgage of 210,000 dollars for his new house. Dave gets an interest rate of 13.2 present compounded monthly. He agreed to make equal monthly payment, the first coming in one month. After making the 68th payment, Dave wants to buy

20. mathematics

the clarkes son suggests that they rent a car that costs \$250 for the week pllus 22cents/km. their daughter does not want to drive far so she suggests a car that is only \$96 for the week but 50cents/km

21. Physics

A turtle ambles leisurely–as turtles tend to do–when it moves from a location with position vector r1,x = 1.49 m and r1,y = -2.83 m in a lettuce garden to another location, with position vector r2,x = 3.17 m and r2,y = -4.49 m, where the lettuce

22. Chemistry

The pH of your swimming pool is found to be 6.89. What is the concentration of H+ ions in the pool? A. 7.76 × 106 M B. 0.84 M C. 1.29 × 10-7 M D. 1.29 × 107 M

23. Science

Please help me. This is the question. A diver weighing 500N is positioned at the right end of a diving board with a length of 4m and negligible weight. The board is bolted down at the left end while being supported 1.5 m away from the fulcrum. a.)Find the

24. Algebra

A phone company charges a monthly rate of 10 dollars for the first 50 text messages and charges \$0.05 for every text message after the first 50 messages Write an equation in two variables that represent the monthly cost of text message services y=0.5x+10

25. Math

Divide Rs 5000 in the ratio 2:3:5

26. Algebra

I don't know how to solve this at all. You work every Sunday in the yard from 8:00 A.M. To 11:30 A.M. Draw a diagram that shows the rotation completed by the hour hand of a clock during this time. Find the measure of the angle generated by the hour hand in

27. algebra

I have a rebus puzzle it says THRU in bold print and AND in regular print THRU AND PLEASE HELP! !

28. Math

Adding and subtracting rational expressions. 3x/x^2+x-12 - x/x^2-16

29. Physics

One positive aspect of the potential use of methane hydrate as a fuel is that A.it exists in a pure form ready for use B.there is more of it than there is coal, oil, and natural gas C.it use will never contribute to global warming D.it is easy to mine

30. Chemistry

When are more products of a reaction available initially than at equilibrium? A. K = 0 B. Q < K C. Q = K D. Q > K

31. Algebra

Mandy has to pay for her gas when she goes out with friends. She receives an allowance of \$25 per week. Mandy fills her 16 gallon car up twice a month with gas currently costing \$2.11 per gallon. After filling her car up twice a month, how much does Mandy

32. Physics (Mechanics)

A bat makes contact with a ball 0.8 meters above the ground. The ball then travels with a speed of 22 m/s, moving up. How high does it go?

33. English

1. Boys are better at math than girls. 2. He is the best at math of all the students in his class. (Are both grammatical?)

34. College Algebra

Create a piecewise function of the following scenario where Upper D left-parenthesis t right-parenthesis is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 3 miles per hour for

35. calculus

A container of hot liquid is placed in a freezer that is kept at a constant temperature of 10°F. The initial temperature of the liquid is 160°F. After 5 minutes, the liquid's temperature is 60°F. How much longer will it take for its temperature to

36. Math question urgent

Mrs. Hart, at age 65, can expect to live for 25 years. If she can invest at 8% per annum compounded monthly, how much does she need now to guarantee herself \$300 every month for the next 25 years? Present Value = 900(1 - 1.0041666..)^-300)/.0041666... =

37. Maths Exponents

(1) 11×10^-5 .Express it in scientific notation. (2)The distance between sun☉ and earth🌎 is (1.496×10^11)m and the distance between earth 🌎 and moon 🌙 is (3.84×10^8)m.During solar eclipse moon comes in between earth and sun.At that time what

38. Chemistry

A solution has [OH-] = 3.5 × 10-6. Based on that, what must be true about this solution? A. It is an acidic solution. B. It is a strong base. C. It is a strong acid. D. It is a basic solution.

39. Science Chemistry

A saturated solution of kcl is prepared at 25degree celsius. What would happen if temperature is cooled to 10degree celcius?

40. English

1. She was listening to the radio, and she was writing a letter. 2. She listened to the radio, and she was writing a letter. (Are both ok? Which one is the better of the two?) 1-1. While she was listening to the radio, she was writing a letter. 2-1. While

41. Maths

A teacher has 16 boxes of sweets. Each box contains 25 sweets. The teacher shares as many sweets as possible equally among 23 pupils i) How many sweets does each pupil receive? ii) How many sweets are left over ?

42. Physics

An automobile accelerates 1.77 m/s2 over 6.00 s to reach freeway speed at the end of the entrance ramp. If the car's final velocity is 24.44 m/s, what is it's initial speed when it began accelerating. the answer i got was 35.06 m/s (35.1 m/s when doing sig

43. miss reiny correct-done

find the nth term of the series 1,3,6,11,19,31,48.... Hence duduce a formula for calculating the sum of the series plz help me show working

44. Chemistry

assume that a drop has a volume of o.o5 ml. if a titration requires 30.00 ml for completion, what % error will each extra drop over 30 ml cause? is it 30.05-30 divided by 30 then times 100 which is equal to 0.17 %

45. Physics

Q.A ballon is asending at the rate of 5m/s at height of 98m above the ground, when a packet is dropped from the ballon. After how much time and with what velocity it will reach the ground.

46. chemistry

calculate the number of moles and mass of methane (ch4) required to produce 11 kg of carbondoxide(co2) when combusted ?

47. English

1. We have talked about the street foods in the four cities. Which street food do you like most among the street foods in the four cities? - I like fruit sticks the most because they are delicious and nutritious. (Is the question or the answer grammatical?

a dealer makes a profit of 25% when he sells a shirt at a discount of 30%. if the profit is 91, find the marked price of this shirt.

49. Physics

You take 4 measurements of the mass of a ball: 2.96 kg, 3.32 kg, 3.31 kg, 3.17 kg. What is the uncertainty of the average mass to 95% confidence? CL=95% N=4 CC=1.84

50. algebra

If the value of 10 ounces of gold is d dollars and an ounce of gold is equivalent to s ounces of silver, what is the value, in dollars, of 3 ounces of silver.

51. Maths

Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.

52. math

in a grain bin 90' in diameter 130'tall how many bushel of grain at 1.2445 cubic feet per bushel will the bin hold?

53. math

Share \$150 among John Mary and Susan such that the two girls receive twice as much as John . How much does John receive

54. physics

While rearranging a dorm room, a student does 307 J of work in moving a desk 1.1 m. What was the magnitude of the applied horizontal force?

55. American Gov.

I'm having trouble finding the answers to these questions (the answers should be in order from the article, it's just not clarifiable. Also, I put ****** .... ***** to show where the answers may be that I think is right, but I'm not sure)... 2. How does

56. Math

Please help me with this question. 4x^2-3x-3 = 0 has roots p, q. Find all quadratic equations with roots p^3 and q^3. I think I do know how to do it but no matter how many times I try, I could never get the right answer. Please help me!!

A student writes, "The inverse of y = -√(x+2) is y = x^2 - 2." Why is this statement false? I don't understand how it isnt the inverse. The textbook says that changing the domain will make it the inverse? Wouldn't that only make it a function?

58. English

Find the answer that best describes the action or situation. The likely result of a surfeit of skilled workers. 1. prices go up 2. wages go down 3. jobs stay the same 4. profits go down Answer: prices go up

59. Physics

A ball is rolled up a ramp with an initial velocity of +10m/s. It arrives at the bottom of the ramp with the same speed 5 seconds later. What is the ball acceleration for the whole trip? What is the velocity after 2 seconds? After 3 seconds?

60. English

What type of pronoun is used in the following Sentence Under the most splendid house in the city is still to be found the cellar where they store their roots as of old? a- personal b- reflexive c- indefinaite d- interrogative my answer is a

61. math

A scuba diver dove from the surface of the ocean to an elevation of −99 9 10 feet at a rate of −30.7 feet per minute. After spending 14 minutes at that elevation, the diver ascended to an elevation of −8 9 10 feet. The total time for the dive so far

62. SS

How is unity and division a theme in Canadian history? How did distinct English and French populations form in Canada? What is the relationship between natural resources and European settlement? How is conflict and compromise a theme in Canadian history?

63. algebra

The width of a rectangle is 8 cm less than its length. The perimeter of the rectangle is 52 cm. What is the width of the rectangle? 7 cm 9 cm 15 cm 17 cm

64. Science

A saturated solution of kcl is prepared at 25degree celsius. What would happen if temperature is cooled to 10degree celcius? ????????

65. Physics

A bean jumps off a table and when it reaches have its height it has a speed of 10 m/s, how high does it rise?

66. Math

Adding and subtracting rational expressions. 1/6m + 2/5m +4/m then simplify

67. arithemetic progression too hard help plz

find the nth term of the series 1,3,6,11,31,48.... Hence duduce a formula for calculating the sum of the series plz help me show working

68. math

Hoe to simplify this Log72/75-log50/48+2log25/24

69. Math

I really need help with a quadratic question. So the problem is kx^2+[k+2]x-3=0 has roots which are real and positive. Find the possible values that k may have. The answer is -8+ √60

70. science

calculate the volume oqupaied by 20gram H2 at NTP

71. algebra

Solve for p. 3+|1+p|=123+|1+p|=12 A. p = 8 or p=−10p=−10 B. p = 14 or p=−16p=−16 C. p = 10 or p=−10p=−10 D. p = 8 or p=−8

72. Maths

Divide 8 into 2 parts such that 7 times the square of the smaller part exceeds twoce the square of the other part by 13

73. physics

What is the kinetic energy of a 15 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?

74. math

each letter in the following problems represents a different number 0 + 9. letters remain constant witin the problems. can you figue out what number each letter represes? he + me = we

75. Trigonometry

How do I solve these linear system problems? I solved it many times but it never seems right. 1. x^2 + y^2 =9 2x - y = -6 2.x^2 - x -y =0 x - y = -3 3. 2x^2 - x - y = -1 3x + y = 5

76. Maths

If (x+3) varies directly as you and x= 3 when y= 12 Find the ; i)relationship between x and y ii) value of x when you = 8

77. Math

Melissa collected 3 kinds of autumn leaves when she was walking today- Elm,maple, and oak. She has 2 times as many maple leaves as elm leaves. Altogether, she has 32 leaves. How many of each kind does she have?

78. maths need help

the diameter of a circular grass-field is 40m. There is a road of width 1 m starting from 1 m away of its end point. Calculate the expenditure to grass the road at a rate of 26 paise per m^2. Plz help with solution

79. maths

l3/m3+m3/n3+n3/l3-3

80. science

What are the effects of pollution in plants?

81. Physics

A bean jumps vertically off of a table. It has a speed of 10 m/s when it reaches half of its maximum height. How high does it rise?

82. Maths

An aquarium is 30% full. When 20 gallons of water are added, the aquarium is four-fifth full. How much water does the aquarium hold?

asked by Jiaqi ( Jiachi )
83. Algebra

Suppose you but 5/8 of a hard of fabric for 2.50. What is the price of the fabric per hard?

84. math

If 6 is added to the numerator and denominator of the fraction 7/9,what will be the value increase or decrease ?by how much ?i need solution answer

85. Geography

Why do we get to see only side moon🌕from the earth🌎?

86. Geography

How many age of the sun☉?

87. Math

Make the smallest number possible , you may include a decimal point 1,7,0,3,8

88. Science

How many grams of CO2 is produced from 855 grams of C6H12O6 in the process of cell respiration?

89. Maths

Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.

90. physics

You are thinking about taking gymnastics, so you go to the facility and get an idea of what to expect by looking out from the viewing room. The viewing room window is 4.40 m above the trampoline directly below, so it is perfect for viewing the the

91. Physics

Physics teacher has this question for hw. 38. An electric powered model car starts from rest and moves in a straight-line for 4.0 s. The relationship between time and position is x^2+ 2 t^2 = 32, t in seconds and x in cm. Find the velocity at t= 1 s & t =

92. Chemistry

2.36 x 10^4 s= ? days

93. Chemistry

Convert a density of 13.6g/ml to lb/ft^3

94. DAM363

if the mean of 5,6,z,15,is 16,find the value of z

95. college math

The difference between sixsix times a number and sevenseven more than threethree times the number.

96. Algebra

write an equation of a line through (-5,-2) that is perpendicular to the x-axis

97. AP physics

Can two vectors, of unequal magnitude, add up to give the zero vector? Can three unequal vectors? Under what condition?