Jim

Newest questions and responses by Jim
1. Algebra

Radium 226, which decays according to the function A(t)=A0e^kt where t is the time in years, has a half life of 1612 years. Find k.

2. data management

the manager of a grovery store asks a store clerk to rearrange a display of canned vegtables in a triangular pyramid. Assume all cans are thr same size and shape. in the first pyramid their is 1 can in the base, second pyramid has 3 cans in the base and

3. Math

1) Find the surface area of a sphere with a radius of 8 cm. A 267.9 cm B 803.8 cm C 2143.6 cm D 2010. cm 2) Find the surface area of a sphere with a radius of 4 ft. A 452.2 m B 150.7 m C 113.0 m D 904.3 m 3) Find the volume of a sphere with a radius of 4

4. Algebra

What is the property of this equation? -3(x+4)=-3x-12 Distributive Property Associative Property of Addition Associative Property of Multiplication Commutative Property of Addition

5. Algebra 2

What is the solution? 2x-3y+z=-19 5x+y-z=-7 -x+6y-z=35

6. english

Describe the narrow escape of the men aboard the Nautilus.

7. Math

(23x + Y)(5 + 17z)= (ZX 43)21

8. Vectors

Determine two other (non-trivial) points on the line that passes through P(5, 6, -2) and is parallel to the line with equation Vector r = (2,-3,4) + t(1,1, -3), t∈R.

9. Vectors

Determine the equation of a plane, P3, that intersects the planes P1: x + y + 3z − 2 = 0 and P2: x − y + 2z = 0 in a point; a line.

10. AP Calculus

2) Given the table below for selected values of f(x), use 6 trapezoids to estimate the value of (10)∫(1) f(x)dx x 1 3 4 6 7 9 10 f(x) 4 8 6 10 10 12 16

11. Math

If I can buy 2 packages of raspberry for \$6.00, then how many Can I buy for \$48.00?

12. Orbital mechanics

What is the approximate Delta V to take a body from an apogee of 43,000km to 66,000km. Assume a separated mass of 4850 kg.

13. Calculus

The function f is continuous on the interval [3, 13] with selected values of x and f(x) given in the table below. Use the data in the table to approximate f '(3.5) x 3 4 7 10 13 f(x) 2 8 10 12 22

14. math

help fast Find the area of a parallelogram with base b and height h. b = 87 cm h = 18.6 cm

15. Math Statistics

Lottery: I buy one of 250 raffle tickets for \$5. The sponsors then randomly select 1 grand prize worth \$250, 2 second prizes worth \$100 each, and 3 third prizes worth \$50 each. Below is the discrete probability distribution for this raffle. Prize P(x)

16. math

which numbers have the same absolute value? choose all that apply. a. |-9| b. |-6| c. |4| d. |6|

17. Science

How to draw spectral curve for an analogous or triadic theme? Using adobe colour cc website Thank you

18. Probability and Statistics

In a population where 85% prefer Candidate A, an organization conducts a poll of 19 voters. Find the probability that 17 of the 19 voters will prefer Candidate A.

19. Probability and Statistics

A high school baseball player has a 0.193 batting average. In one game, he gets 7 at bats. What is the probability he will get at least 2 hits in the game?

20. Probability and Statistics

If a seed is planted, it has a 95% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 4 don't grow?

21. Probability and Statistics

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly select peanut M&M’s from an extra-large bag looking for an orange

22. physics

A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string

23. Physics

a pendulum-driven clock gains 5.00 s/day, what fractional change in pendulum length must be made for it to keep perfect time?

24. Physics

a pendulum-driven clock gains 5.00 s/day, what fractional change in pendulum length must be made for it to keep perfect time?

25. world history

Which power did farmers, merchants, and artisans eventually gain in the roman republic? A. The ability to elect officials who could veto laws harmful to plebeians B. The ability to select patrician consuls C. The right to help Etruscan authorities in

26. algebra

equivalent expression o f 10/13

27. math

if one inch= 20 feet how many feet is 1/16"?

28. Matht

Translate this sentence into an equation. The product of 7 and diego'so savings is 112. Use d to represent diego'so savings

29. Chemistry

The human body “burns” glucose (C6H12O6) for energy. a. Write a balanced chemical reaction for the complete combustion of glucose to CO2(g) and H2O(l) such that the stoichiometric coefficient for glucose is 1. b. When 1.00 g of glucose are completely

30. Chemistry

Calculate the Delta Hf of the OH- ion given that the Delta Hf (H2O) = -285.8 kJ mol-1.

31. ss

How did Muslim Turks influence Turkey's development? Do not copy and paste anything, its not helpful.

32. geometry

the interior angle measures of a triangle are in 3:8:9 what is the measure of this triangles largest interior angle

For each of the three-digit numbers with no digits zero, the difference between the number itself and the product of its digits is calculated. The largest such difference is A. 110 B. 270 C. 902 D. 910 E. 927

34. Math

The perimeter of the area to be fenced is 1760ft. Estimate the number of wooden fence posts needed if the posts are placed 8.625ft apart

35. Math

The square root of twice a number is equal to one-third of that number. Find the number.

36. Math

The square root of twice a number is equal to one-half of that number. Find the number.

37. Maths

A box contains different coloured counters, with P(purple)= 10%, P(yellow)= 2/3 and P(orange) 1/7. a. Is it possible to obtain a colour other than purple, yellow or orange? b. What is the minimum number of counters in the box c. If the box cannot fit more

38. Maths

A spinner numbered 1 to 50 is spun twice. Find the probability that the total from the two spins is: a. 51 b.55

39. Maths

Two cars travel towards each other on a 400 km stretch of road. One car travels 90 km/h and the other at 70 km/h. How long does it take before they pass each other

40. math

To maximise profit, the company should sell as many children’s tickets as possible. Of the 300 available seats, determine how many should be allocated to children if there is a maximum of 4 children per adult.

41. Physics

A straight horizontal rope is towing a 5.52 kg toboggan across frictionless ice. A 2.76 kg radio is on top of the toboggan with a coefficient of static friction of 1.50 between the toboggan and radio. In order to prevent the radio from slipping, what is

42. Math

What 5 digits are in the ones place of even numbers?

43. Math

how much candy that is worth \$5 per pound must be mixed with 60 lb that is worth 4\$ per pound to get a special Christmas mixture to sell for \$4.40 per pound?

44. English

Type of sentence: To keep your files in order, the filing rules must be learned. (A) Properly constructed (B) Lacks parallel parts (C) Dangler (D) Misplaced part. I believe it to be (A)?

45. Physics

You push a skateboard so that it rolls down the road at a speed of 0.600 m/s. You run after the skateboard at a speed of 3.50 m/s and while still behind the skateboard you jump off the ground at an angle of 22.0° above the horizontal hoping to land on the

46. Science Chemistry

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

47. math

The base (WX) of an isosceles triangle (SWX) is also the side of a square (WXYZ) in which the triangle is inscribed. The altitude from SX, at point V and making 90 degrees with SX, meets W, forming triangle SVW. What is the ratio of triangle SVW to the

48. Analytic geometry

Find the equation of the set of all points P(x,y) that is equidistant from (-3,0) and (3,-5).

49. SPSS

Create standardized scores for all scale variables (price through alcohol). Which beverages have positive standardized scores on every variable? What does this mean?

51. History

Explain the impact of the Balfour Declaration on the Middle East. Explain the impact of the Japanese attack on Pearl Harbor.

52. math

The farmer sells a 41.9915-tonne load to a buyer who takes a single scoop of tomatoes from a random spot in the load. If the sample has approximately 300 tomatoes and 92% are acceptable, how much is the load worth? Tomatoes sell for \$94.40 per tonne.

53. Prob

What is minimum sample needed if you know the SD is 22.36 and an accuracy of 3.06 and you want a confidence level of 90%

54. Life orientation

Evaluate the physical,social and economic consequences of this crime to the offender.how did this corruption and fraud impact negatively in the country

55. algebra

Select the first five terms in the geometric sequence an=(3)n−1, starting with n=1

56. sequence

Select the first five terms in the arithmetic sequence an = 4n, starting with n =

57. math

Find the dimensions of an open topped box that can be made from 3600 cm^2 of cardboard, if the length of the base is three times as long as its width. What is the maximum volume?

58. Math

A recipe ask for 2/3cup of water and they want to triple the recipe. How do I show the work. What is the first step to get the answer.

59. Calculus

limit of (x*(y-1)^2*cosx)/(x^2+2(y-1)^2) as (x,y)->(0,1). By evaluating along different paths this limit often goes to 0. This does not necessarily imply that it exists. So how would i prove that it exists. Can someone please show me how i can prove using

60. History (one more question)

Did anyone oppose or try to prevent this event (may be within the nation or another government opposing the event)?

61. History

The Young Turks supported the Armenian Genocide event? on 1914 - 1918

62. History help

Who supported or helped to carry out the government orders? was it the Young Turks?

63. math

A 10 kilometer race is about 6.2 miles long. Teresa completes the race in 58 minutes. What is her average time per mile? Give your answer in minutes and seconds.

64. physics

At 20°C, a brass cube has an edge length of 34 cm. What is the increase in the cube's surface area when it is heated from 20°C to 67°C?

65. physics

At 20°C, a brass cube has an edge length of 34 cm. What is the increase in the cube's surface area when it is heated from 20°C to 67°C?

66. Statistics

Imagine you're a researcher and you need to perform a one-sided test of an alternative hypothesis. You decide to conduct a significance test at the .05 level. Which of the following ranges of z-scores would make the test statistic significant at .05

67. college algebra

Rectangle garden using a wall as one side of the perimeter. What are the dimensions if we have 16ft of fencing and an area of 30sqft. To be clear, you are only using the fencing for 3 sides of the garden.

68. geometry

A hemisphere tank is filled with water and has a diameter of ten feet. If the water weighs 62.4 pounds per cubic foot, what is the total weight of water in a full tank?

69. Statistics

The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the distribution of sample means for

70. Algebra

y=-5x^2,y=-x^2,y=-4x^2 a) y=-x^2, y=-5x^2, y=-4x^2 b) y=-x^2, y=-4x^2, y=-5x^2 c) y=-5x^2, y=-4x^2, y=-x^2 d) y=-4x^2, y=-x^2, y=-5x^2

71. social studies (again)

Jean-Jacques Rousseau: In his book The Social Contract, Rousseau comes up with his theories on government. He believed in what he called “a state of nature” in which people are purely instinctual and harmful, so he says people made a contract with the

72. differential equations

dS/dt = f(S) = kS(1-S/N)(S/M-1) of a fox squirrel population from the previous section. Suppose that the parameters M and k remain relatively constant over the long term but as more people move into the area. the parameter N (the carrying capacity)

73. History

In his book Two Treatises on Government, Locke refuted the divine right of Monarchy, and established a theory which states that all men are men are born free and equal. Each person should have equal access to the natural rights of life, liberty, and

74. differential equations

dS/dt = f(S) = kS(1-S/N)(S/M-1) of a fox squirrel population from the previous section. Suppose that the parameters M and k remain relatively constant over the long term but as more people move into the area. the parameter N (the carrying capacity)

75. math

deposit \$150.00 per month for 312 months. average interest is 4%. how much money will be account at the end?

76. Math

Let f(x)=7x2. Find a value A such that the average rate of change of f(x) from 1 to A equals 84. A=

77. Math

A store owner bought comforters for x dollars and is marking them up 60 percent write two expressions that represent the selling price and show that they are equivalent.

78. Pre-calc

Please solve: 5sin2x + 3sinx - 1 = 0

79. Math

There are 14 children in little league baseball team. Only 9 can play at a time. The baseball season has 42 games. The coach decided that each of the 14 children would play in the same number of complete games.In how many complete games will Howard, one of

80. Algebra

A pudding recipe requires 2/3 of a cup of milk for every 1-3/4 cups of sugar. What is the unit rate of sugar to milk in the pudding recipe?

81. precalc

For each: a) Identify the ellipse as horizontal or vertical b) Give the coordinates of 1) The center 2) The major vertices 3) The minor vertices 4) The foci 1) [(x+4)2/64] + (y2/100) = 1 2) [(x-1)2 / 36] + [(y+3)2 / 25] = 1

82. Math

Use the correct form of factoring in order to find the x intercepts. 9r^2-5r-10

83. Algebra 2

Use the correct form of factoring in order to find the x intercepts. 9r^2-5r-10

84. Algebra II

Find 2 positive numbers who differ by 8 and whose reciprocals add to be 1/3

85. English

Combine these two simple sentences into a complex sentence. Many industrialized nations use the metric system. The United States refuses to adopt it. A. Although many industrialized nations use the metric system, the United States refuses to adopt it. B.

86. English

Choose the option that corrects the error in the "quote". If no error exists, choose "No change is necessary." Bill, the foreman of the construction company, is concerned about the safety in the large building. "They have had" three accidents in the past

87. math

Of the 34 students in a class, there are 2 fewer students with blue eyes than there are students with hazel eyes. Also, there are twice as many students with brown eyes than there are students with blue eyes. Which of these is either the number of students

88. chem

Write a net ionic equation for the reaction that occurs when excess nitric acid (aq) and potassium sulfite (aq) are combined. Note: Sulfites follow the same solubility trends as sulfates.

89. Chemistry pls help

Ion flame test Why is it important to not let the wooden splint burn ??

90. Algebra 2

Solve each equation for the variable. Check your solutions, if possible. x/2+1=6

91. algebra

A train leaves Atlanta at 1:00 PM. A second train leaves the same city in the same direction at 5:00 PM. The second train travels 48 mph faster than the first. If the second train overtakes the first at 9:00 PM, what is the speed of each of the two trains?

92. Trig

The width of the box is 9 inch more than its length and the height of the box is 1 inch less than its length write an expression for the volume of the box

93. English

Identify the correct sentence. A. Where is the necklace from your sister and the earrings from your cousin? B. Where are the necklace from your sister and the earrings from your cousin? C. Where are the necklace from your sister in addition to the earrings

94. English

Identify the INCORRECT sentence. A. Amanda worked diligently on her algebra homework. B. Trudy bought a American-made car. C. My sister angrily slammed the door. D. You should concentrate closely on whatever you write. D

95. English

Which is __________ to write, a letter or an essay? A. most easiest B. more easy C. easiest D. easier

96. Algebra

Find two points on the graph of the parabola other than the vertex and x-intercepts. k ( x ) = ( x − 1 )^(2) − 6

97. Word problems

Jennifer serves the volleyball to Debra with an upward velocity of 10.5ft/s. The ball is 5 feet above the ground when she strikes it. How long does Debra have to react, before the volleyball hits the ground? Round your answer to two decimal places.

98. Chemistry

What is the molarity of Cu2+ in a catalyzed reaction using 3 drops of CuSO4 at .03M in 50.0ml, and what is the molarity of Cu2+ using 6 drops? (Consider the extent of dilution of the 0.1 M CuSO4 solution in preparing the 50 mL reaction solution. Estimate