# Questions Asked onFebruary 28, 2017

1. ## Math

Simplify to positive exponents only 1. (X^4)^3 2. (X^-3)^-2 3. (4^-1)(3^-1) 4. (4ab^)(-5a^3b^2) 5. (5a^8b^-12)(-10a^3b^7)

2. ## Math

Scott is attempting to approximate the value of √110. The two whole numbers that √110 will fall between are?

3. ## Math

Does anyone have the answers for the Penn Foster Math for Business and Finance proctored exam? 060497

4. ## Math

A. The cube roots of -27 are 3 B. The fourth roots of 81 are 3 C. 3√-1000=-√1000 D. 4√-16=-4√16 Which of the following statements are true 1. B and C only 2. A, B and C only 3. A,B,C and D 4. Some other combination of A, B, C and D

5. ## stats

Based on data from a statistical abstract, only about 10% of senior citizens (65 years old or older) get the flu each year. However, about 27% of the people under 65 years old get the flu each year. In the general population, there are 15% senior citizens

6. ## maths

AB touches circle (P, 12) at A and circle (Q, 5) at B. If PQ= 25 and A&B are either side of PQ tthen AB= -------- please explain with diagram

7. ## maths

A two digit number is k times the sum of the digit. By interchanging the digits, Find the number is how many times its sum of the digits. Explain method

8. ## matlab

Please help. I've made the variable for in_vector, but I'm having trouble figuring out how to get the vector to return a row vector of num_or_digits of length 10. Write a script that takes a vector of single-digit integers and counts the occurrences of

9. ## Science

What do we mean when we say, "The speed of the car is 90 km/h."?

10. ## maths

deepak is twice as old as vikas after twelve years his age will be thrice that of vikas. find there present ages

36. ## Algebra 1

The area of a rectangular pool is given by the trinomial 2y^2+5y-42 . What are the possible dimensions of the pool? Use factoring. a. 2y+7 and y-6*** b. 2y-2 and y+6 c. -2y-7 and -y-6 d. 2y-7 and y+6 tbh im guessing. i have no clue. can someone help

37. ## optional math

Seventh term of geometric series is 64 and sum of its 10 terms is 1023. Find its 15th term.

43. ## Math

write the ratio as a fraction in lowest terms. Compare in inches 3 feet to 28 inches

44. ## math

One winter day, the temperature was between –14°F and –3°F. Which inequality represents the range of temperatures, t, during that day?

45. ## Algebra

What is the closed linear form for this sequence given a1 = -15 and an + 1 = an - 8? A) an = 7 - 8n B) an = -7 + 8n C) an = -7 - 8n D) an = -15 - 8n my best answer is C

46. ## Math

A manufacturer uses a mold to make a part in the shape of a triangular prism. The dimensions of the part are shown below. Dimensions - a-14.4 mm b-8.25 mm c-7.5 mm h-2.1 mm Which estimate is closest to the volume in cubic millimeters in the part? A)625

47. ## Maths

John and Kathleen are fertilizing their 13,000 square foot lawn,One bag of fertilizer covers 5,000 square feet.What is the fewest number of bags they need to purchase to fertilize their lawn ?

48. ## Science

The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2). If an object’s mass is m=58.5 grams, what is its weight? Same goes to 45.93 grams. If you could answer as soon as possible that would be great!

49. ## physics

A student in the fitness center lifts a weight with m = kg from the floor to a height of meters in a time of seconds. Find the average power exerted by the student during this time. Give your answer in watts (W) and with 3 significant figures.

50. ## Maths

a loan of 2000 is being amortized over 48 months at a interest rate of 12 peecent compounded monthly, the outstanding loan at the beginning of 36 month is ?

51. ## algebra

What is the closed linear form for this sequence given a1 = -15 and an + 1 = an - 8? A) an = 7 - 8n B) an = -7 + 8n C) an = -7 - 8n D) an = -15 - 8n my best answer is C

52. ## Physics

A plane travels 3 km due north, then 5 km due northeast. Represent these two displacements graphically and determine the resultant displacement by finding is magnitude and direction.

53. ## Physics

An object is given two initial velocities, one that has a magnitude of 60.0 ms-1 and points along a direction that is 35.0° north of east and the other has a magnitude of 55.0 ms-1 that points 15.0°, also north of east. Determine the resultant velocity

54. ## math

If the variance of a light bulb is 400 and the mean lifetime of a light bulb is 600 hours. find the probablity of a light bulb lasting at most 622 hours

55. ## math

what is the particular integral of xe^x??

56. ## Math

How do you simplify radicals √162

57. ## IPC

if you throw a 0.145 kg baseball in 18 meters in 0.45 seconds, what is the magnitude of momentum of that baseball?

58. ## Math

Calculate the perimeter of a rectangle whose length and breadth are 15m and 12m.find the cost of fencing the field at the rate of rs 25 per meter.

59. ## Maths

26cm of wood is cut off a board 130cm long . What percentage has been cut off ?

60. ## Pre Calculus

Am I correct? Please show me how if I am wrong 1.How many 6 digit numbers can be made using each of the digits {8,8,9,5,5,6} exactly once? 6!=702 2.How many more arrangements are there from all of the letters of the word MARMALADE than there are from all

61. ## chemistry

THE QUESTION ASKS TO CALCULATE THE AMOUNT (IN GRAMS) OF CARBON DIOXIDE FROM THE AMOUNT OF SODIUM BICARBONATE THAT YOU USED IN THE REACTION Run 1. The reaction of citric acid and sodium bicarbonate is written as H3C6H5O7(aq) + 3 NaHCO3(aq) → Na3C6H5O7(aq)

62. ## Chemistry

Use the concentrations and volumes of hydrogen peroxide and KI before mixing (Table 1), calculate the post-mixing concentrations. Before mixing: [H2O2] = 0.88M [KI] = 0.500M Table 1: before mixing 1. Vol H2O2 = 4.0 mL, [H2O2] = 0.88M 2. Vol KI = 1.0 mL,

63. ## Math

True or false (check) A. All integers are natural numbers FALSE B. All rational numbers are integers TRUE C. All natural numbers are whole numbers TRUE D. All rational numbers are roots FALSE

64. ## Social Studies

Which of the following indicates a rise in racial tensions in the 1920s? A. increased enlistment of African American men into the military B. movement of many African Americans to the South C. passage of several federal laws to end Jim Crow practices D.

65. ## SCIENCE HELP ASAP

1. in an atom, electrons_____ 2. dot diagrams are used to represent_______ 3. the maximum number of electrons in the second energy level of an atom is________

66. ## social studies

which statement best explains the concept of separation of power

67. ## Social studies

Please help!! Are any of my answers correct? 1, which reason best explains the motivation for American expansion? It would be important to maintain political influence in developing countries A US naval presence around the world would decrease the chance

68. ## homework

i dont get this question pliss help it says a pond is 36m long a duck swims 4 lengths of the pond each day how far does the duck swim in four weeks?

69. ## Math

Write as a radical power 1. 3√13^2 2. √(2/3)^5

70. ## SS

If the middle east runs out of oil, what other resources can they have?

71. ## Language Arts

The play is The Straw by Eugene O' Neil (scene 1-45) 1. Part B Which line of dialogue is the best evidence for the answer to Part A? A. No, your kind never realizes things till the crash comes... B. A majority of the most influential men of this city are

72. ## Intermidiate Algebra

While hovering near the top of a waterfall in a national park at 23042304 Ã¢â‚¬â€¹feet, a helicopter pilot accidentally drops his sunglasses. The height h left parenthesis t right parenthesish(t) of the sunglasses after t seconds is given by the

73. ## science

why dos buying food that is grown in your local area help prevent loss of biodiversity ??????

asked by HELP ME ASAP PLS
74. ## chemistry

what is the net ionic equation for AlBr3(aq) + 3LiOH(aq)

75. ## physics

Find the length of a pendulum that oscillates with a frequency of 0.25 Hz

76. ## math

You flip a fair coin 10,000 times. Approximate the probability that the di fference between the number of heads and number of tails is at most 100.

77. ## math

Identify and give all the appropriate names for three different quadrilaterals or other geometric figures in this Navajo eye­ dazzler design.

78. ## Science

How much power is lifted if a person lifts 60N weight up 2 meters in 10 seconds?

79. ## math 1

3x - 8y = -17 2x -7y = -18

80. ## math

The container when 3/5 filled can hold 45 marbles. a) How many will it hold when filled? b) How many more marbles are needed to completely fill the container?

81. ## math

A circular pie was cut into 6 equal slices. Calculate the angle formed by each slice.

82. ## History

Was James Bevel the one who founded the Children's Crusade in 1963?

83. ## math

A roll of ribbon is cut into 28 pieces, each \frac{3}{4} m long. What was the TOTAL length of ribbon on the roll?

3rectangular metal blocks,8 cm long, 6 cm wide & 5 cm high, were placed in an empty rectangular glass tank.water was then poured in until it reached a height of 10 cm. Another 5 similar blocks were put into the water so that it reached the brim of the

85. ## Science

A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

86. ## math

Chris went to his friend Andrew’s birthday party. He travelled 0.55 the distance by bus and walked the rest. a) What fraction of the distance did Chris walk? b) If Chris walked a distance of 1.8km, how far from Andrew did he live? Answer km

87. ## math

The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.

88. ## Physics

A water wave with a wavelength of 35.6 cm approaches a wall with a large opening in it. The hole begins to close. What size does the hole in the wall need to be for the wave to noticeably diffract through the hole? Justify your answer.

89. ## Physics

A wave with an amplitude of 31 mm interferes with another wave that has the same wavelength, an amplitude of 13 mm. a) What is the maximum amplitude of the resultant wave if the two waves are in phase? b) What is the maximum amplitude of the resultant wave

90. ## Physics

A light wave strikes a lake at an angle of incidence of 65.4 degrees. At what angle of refraction will this wave travel through the lake? (The index of refraction of water is 1.33 and the index of refraction of air is 1.00)

91. ## math 1

6x+8y=4 8x-3y=19

92. ## math

Fifteen oranges cost $6.00. a) How much will Anna have to pay for 32 oranges? b) How many oranges can she buy with$32.00?

93. ## Science

A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

94. ## math 1

9x-4y=-3 8x-3y=-1

95. ## Math Plz help ASAP

In football, a field goal is worth 3 points. Which function rule relates the number of field goals, f, and the number of points, p? A) f=3p B) p=3f C) 3+f D) p=3+f Which function rule is represented by the table? X[0,1,2,3 Y[3,5,7,9 A)y=x+3 B)y=x+6

96. ## Science

A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

97. ## math

The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.

98. ## Science

A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he

151. ## Math

What is the approximate circumference if diameter is of 23 feet

152. ## Physics

An ideal gas in a moveable piston is allowed to reversibly expand by slowly heating at constant pressure. a. Derive the equation for the work done reversibly as a function of the initial and final temperatures.( i have used w=-nrtln(v final/v intial) i

153. ## math

A pair of dice is rolled. Find the probability of rolling ​a) a sum not more than 1010​, ​b) a sum not less than 77​, ​c) a sum between 33 and 77 ​(exclusive).

154. ## math

it cost a company 15,000 per day to operate a plant no matter how much product they produce. in addition, it cost 75 per unit produced. write an equation that represents the total cost to operate the plant each day. use the variable x to represent the