vincent

Most popular questions and responses by vincent
1. Pre-Calculus

Find the area of the triangle. Round to the nearest tenth. B= 42.8° a= 12.7 c= 5.8 I found b by using the Pythagorean theorem and got b= 11.298 but I don't know what to do next after this. I would find the altitude but I don't know angles A and C?

2. math

If shipping charges to certain point 62 cents for the first five ounces and 8 cents for each additional ounce, the weight of a package, in pounds, for which the charges are \$1.66 is not just an answer please A.7/8 B.1 C.1 1/8 D.1 1/4 E.1 1/2

3. chemistry

What is the unbalanced equation for the combustion reaction of gaseous C4H10 and gaseous oxygen to form gaseous carbon dioxide and gaseous water?

4. ALGEBRA

Mae open her coin purse and found pennies,nickels and dimes with a total value of \$2.85.If there are twice as many pennies as there are nickels and dimes combined.How many pennies,dimes and nickels are there if she has a collection of 90 coins given:

5. math corrections

10. You have a nickel, a dime, a quarter and a fifty-cent piece. A clerk shows your several articles, each different price and any one of which you could purchase with your coins without receiving change. What is the largest number of articles he could

6. ALGEBRA

if a bottle holding 3 liters of milk contains 3.5% butterfat,How much skimmed milk must be added to dilute the milk to 2% butterfat

7. Math

Given that cos 13pi/18=sin y, first express 13pi/18 as a sum of pi/2 and an angle, and then apply a trigonometric identitiy to determine the measure of angle y.

8. computer networking

A firm is assigned the network part 128.171. It selects an 10-bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet. Programming?

9. Calculus

Wheat is poured through a chute at the rate of 10 ft^3/min and falls in a cone-shaped pile whose bottom radius is always half its height. How fast is the height of the cone increasing when the pile is 8 feet high? Volume of a cone=1/3(pi)r^2h

10. math corrections

I got a few questions wrong and i would like some explanations on these question: 2. A pair of pants sells for \$6 more than 75% of its price of the pants? A.\$12 B.\$18 C.\$20 D.\$24 E.\$36 Choice E is wrong. 4. What is the wall thickness, inches, of a tube

11. DIFFICULT MATH

Okay I've been working on this for 10 hours straight and cannot get it. This is a math problem from my teacher who just loves to add these frustrating math questions at the end of the worksheet. It says: If you add the age of a man to the age of his wife

12. science

Explain why Na2CO3 against HCL titration using phenolphthalein indicator does not go to completion but stops at the NaHCO3 stage.

13. Science

Acetic acid(CH3O2H) reacts with isopentyl alcohol (C5H12O) to yield isopentyl acetate acetic acid with isopentyl alcohol is 45%,how many grams of isopentyl acetate are formed from 3.5g of accetic acid and 4.75g of isopentyl alcohol? The reaction is ;

14. English 1

the old people i remember from my childhood were strong in their beliefs, and as we lived daily with them we learned a wise path of life to follow.this quote from 'A celebration of grandfathers' by rudolfo anaya shows what writing style?

15. physical

A battery of e.m.f 24v and internal resistance of 4ohms is connected to a resistor of 3ohms.what is the terminal potential difference of the battery

16. Alg2/Trig

Find the exact value of the trigonometric function given that sin u = 5/13 and cos v = -3/5. (Both u and v are in Quadrant II.) Find csc(u-v). First of all, I drew the triangles of u and v. Also, I know the formula of sin(u-v) is sin u * cos v - cos u *

17. Math

Your friend sends out a chain letter e-mail to 12 people and by the next day 15 people have received the letter. Assuming an exponential growth pattern, how many new people will receive it by the 30th day?

18. Physics

A 6.0kg block is falling toward a spring located 1.80m below. If it has a speed of 4.0m/s at that instant, what is the maximum compression of the spring if the spring constant is is 2.000 x 10^3 N/m?

19. Math

A movie theater charges \$5 admission for an adult and \$3 for a child. If 700 tickets were sold and the total revenue received was \$2900, how many tickets of each type were sold?

20. Calculus

A stone is thrown into a calm pond and circular ripples are formed at impact. If the radius expands at the rate of 0.5 feet/second, how fast is the circumference and the area of the ripples growing when the radius is 3 feet?

21. math

Ten minutes after a plane leaves the airport, it is reported that the plane is 80 miles away. What is the average speed of the plane, in miles per hour?

22. iltexas

how do you divide decimals

23. Maths

There are 250 people at an international medical conference. 50 are africans, 80 are women and 180 are doctors. 20 of the women are Africans, 56 of the doctors are women and 35 of the Africans are doctors. If 10 of the African men are not doctors, how many

24. Makalema secondary school

Aluminium reacts with oxygen to form aluminium oxide.How many grams of potassium chlorate would be heated to produce enough oxygen to form 5.1 grams of aluminium oxide?

25. math

If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches,the thickness of the wall of the tank,in inches, is

26. microeconomics

Monopolist facing linear demand function p = 1000+40q and total cost function c = 500+26q.determine optimal price output and profit perfect profit

27. math

The diameter of a circle is increased by 50%.The area is increased by a. 50% b. 100% c. 125% d. 200% e. 250% please answer and explain

28. Physics

You accidentally drop a cell phone, if the cellphone lands on a grassy lawn, is its momentum less, the same, or greater?

29. math

How many gallons of water are needed to raise the level of a swimming pool 75' x 42' four inches above its present level? ( 1 cubic foot= 7 1/2 gallons )

30. math

23. There are two telephone companies provide home phone service in New York City. Company A charges \$25 monthly fee and \$0.10 for one minute after 30 minutes phone call. Company B charges \$20 monthly fee and \$0.12 for one minute after 30 minutes phone

31. Vector Calculus

Thermodynamics texts use the relationship (dy/dx)(dz/dy)(dx/dz) = -1 Explain the meaning of this equation and prove that it is true (Hint: Start with a relationship F(x,y,z) = 0 that defines x = f(y,z), y = g(x,z), and z = h(x,y) and differentiate

32. Physics

A car has wheels with tyres on, which are 75cm in diameter. The car is travelling at a constant speed of 60km/hr. If no slipping is observed between the wheels(tyres) and the road, calculate the angular speed and the acceleration of a stone wedged in the

33. math corrections

14. According to the Texas Parks and wildlife Department, there are about 40 white-tailed deer per square mile in each of 35 Texas counties. A rectangular area on a ranch in one of these countries measures 2.25 miles by 6.7 miles. Which of the following is

34. math

One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel traveled a certain distance in 240 revolutions. In how many revolutions did the second wheel travel the same distance? not just an answer please A.120

35. language arts

my mom went to the grocery store. she forgot her purse... a)comma B)and c)or d)but e)because

36. math

Mary can clean the house in 6 hours. Her younger sister Ruth can do the same job in 9 hours. In how many hours can they do the job if they work together?

37. science

if an object`s mass is 9 kg and it`s height is 7 m what is the potential energy of the object

38. math

Two cars begin driving toward each other from towns that are 150 miles apart. The first car is traveling 45 miles per hour, and the second is traveling 55 miles per hour. If each leaves at 2:15 pm, when will the two cars pass on the road?

39. math

The longer leg of a right triangle is 3 more than the shorter leg. The Hypotenuse is 6 more than the shorter leg. If the perimeter of the triangle is 36, find the length of each side of the right triangle. [ Only an algebraic solution will be accepted ]

40. Maths

In a class of 39 pupils, 1/4 of the girls wear spectacles and 2/3 of the boys wear spectacles. A total of 16 pupils in the class wear spectacles. How many girls do not wear spectacles? Answer preferably in model method please.

41. math

9. Three cards are drawn at random from a standard deck of 52 card, without replacement. What is the probability of drawing a 7, drawing a 9, and a king in that order?

42. Finance

A Treasury note with a maturity of four years carries a nominal rate of interest of 10 percent. In contrast, an eight-year Treasury bond has a yield of 8 percent. a. If inflation is expected to average 7 percent over the first four years, what is the

43. math

23. There are two telephone companies provide home phone service in New York City. Company A charges \$25 monthly fee and \$0.10 for one minute after 30 minutes phone call. Company B charges \$20 monthly fee and \$0.12 for one minute after 30 minutes phone

44. math

5. How many positive integers less than 36 are equal to 4 times an odd integers?

45. math

The length of a side of a square is fifteen less than four times the length of a side of a second square. The perimeter of the two squares differ by 24 inches. Find in inches, the length of a side of the smaller square. [ Only an algebraic solution will be

Molar Heat of Fusion of Ice Experiment. Does the Temperature of a component of a system [cup of warm water from experiemtn] depend on the quanity of matter in the sample? two different ways to increase the temperature of a pan of cold water??? Does the

47. ALGEBRA

In three more years,Miguel's grandfather will be six times as old as Miguel was last year.When Miguel's present age is added to his grandfather's present age, the total is 68.How old is each one now?

48. math

For a experiment, Jenna needs to make a dilute solution that is 10 ounces of 40% acid. But Jenna only has solutions that are 30% acid and 70% acid. How many ounces of 70% acid solutions should she use? A. 2.5 ounces B. 5 ounces C. 7.5 ounces D. 8 ounces

49. math

An oil tank has a capacity of 45 gallons.At the beginning of October it is 80% full.At the end of October it is 1/3 full.How many gallons of oil were used in October? a. 21 b. 25 c. 41 d. 27 e. 30 my answer is (e)30, 45 x 1/3 =15 ,so 2/3 = 30

50. math

Phil has 20 coins, nickels,dimes, and quarters, totaling \$2.30. If he has twice as many nickels as quarters, how many quarters does Phil have?

51. math

The length of a rectangle is three times the length of a side of a square and the width of the rectangle is two less than the side of the square. If the perimeter of the rectangle is twenty eight more than the perimeter of the square, find the length of a

52. math

Number of cubic inches in volume of cube, Number of square inches in surface area of cube. which one is greater or equal?

53. math

A storage shed is in the shape of a square. A builder increases the length of one side of the shed by three feet and decreases the length of an adjacent side by two feet. The shed is now a rectangle with a perimeter of 70 feet. What is the measure of a

54. math

A boy travels on his bicycle at the rate of 6 miles per hour and his sister on hers at the rate of 5 miles per hour. They start at the same time and place and travel over the same road in the same direction. After traveling for 3 hours, the boy turns back.

55. Science

A coil of inductance 0.04henry and negligible resistance is connected in parallel with a 10ohms resistor, across a 240volts supply of frequency 50hz. Calculate:1) the current through the resistance, 2) the current through the coil, 3)the supply current,

56. Math

The number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. How many blocks are there?

57. Physics

The water from two buckets is mixed together. One bucket contains 5kg of water at 20 degrees Celsius and the other contains 1kg of water at 80 degrees Celsius. What is the final temperature of the mixture, assuming no heat is lost to the surroundings? A.

58. math

15. What is the mathematical average of the number of weeks in a year, seasons in a year, and the number of days in January? This is what I know so far: I know there is 52 weeks in one year.

59. math

11.What is the slope of the line whose equation is 4y-6x+16=0?

60. math

If 4 coins are tossed simultaneously, what is the probability of getting exactly 3 tails?

61. math

19. Which statement describes the relationship between the line graphs of the equations below? y=-2x+4 y=0.5x+4 A.The line graph are the same line. B.The line graph are parallel lines. C.The line graph are perpendicular lines. D.The line graphs intersect,

62. math test review

2. If 4% of motorists on the New Jersey Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging, out of every 10,000 motorists how many motorists may be expected to go to this motel? A.2 B.10 C.20 D.100 E.200

63. math

4. A board jumper makes an average standing jump of 8 feet. In how many jumps will he cover y yards? I got B for this question. A.3y/8 B.8/3y C.24y D.1/24y E.24/y

64. social studies

what were roles of men in Iroquois league?

65. math

The supplement of an angle measures 11 times its complement. Then the measure of the angle is: (A) 9 degree (B) 99 degree (C) 81 degree (D) 90 degree (E) none of these not just answer, please tell me how to do it

66. math

In a 3 hour examination of 350 questions, there are 50 mathematics problems. If twice as much time should be allowed for each problem as for each of the other questions, how many minutes should be spent on the mathematical problems? not just and answer

67. math

It takes 1 and 3/4 hours to fill a new underground gasoline storage tank. What part of the tank would be fill if the gasoline had been shut off after 1 hours?

68. Math

a bank of 16 floodlights together use 5600 watts of power how much power is used by each bulb

69. Calculus

Use mathematical induction to prove that each proposition is valid for all positive integral values of n. 5^n + 3 is divisible by 4.

70. Pre-Calculus

Solve the triangle. Round to the nearest tenth. B=54deg a=42 c=6.5 1. I found length of b using law of cosine and got 36.2 2. Using side of b, I used the law of sine to get angle A = 28.2 3. I added B+A and subtracted from 180 to get angle C = 127.8 which

71. Algebra2/Trig

Find all the zeros of the function and write the polynomial as a product of linear factors. g(x)=3x^3-4x^2+8x+8 On my graphing calculator it says that it is -2/3. But when I do it by hand using synthetic division, I don't get a zero. I'm going crazy

72. Human Resource

Can someone please look over this and let me know if this is right. • Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources professionals to choose, train,

73. force

A girl on roller skates accelerates at a rate of 2m/s2 with a force of 100N. is her mass F=ma m is mass in kg a is acceleration in m/s^2 F is in Newtons solve for m. A girl on roller skates accelerates at a rate of 2m/s2 with a force of 100N. what is her

74. Math

An amusement park sells 25 cent, 50 cent, and \$1 tickets and a teacher purchases \$32.50 worth of tickets. A student remarks that there are twice as many 50 cent tickets as there are \$1 tickets and that the number of 25 cent tickets is 30 more than the

75. physics

John pushes on a 400 kg refrigerator with a force of 800 N. While sliding a friction force of 300 N acts on the refrigerator. What is the acceleration of this refrigerator?

76. ALGEBRA

If a jeweller wishes to form 12 ounces oif 75%pure gold from substances that arev 60% AND 80% pure gold .How much of each substances must be mixed together to produce this?

77. ALGEBRA

Sue is 8 years older than her pet goldfish Maya .In two years Sue's age will be three times Maya's age .What are their present age?

78. ALGEBRA

The man gave 1/2 of his money to his brother,1/6to his friend and the remainder an amount of P150,000 which he kept.How much money does the man originally have?

79. math

3. If Leah is 6 years older than Sue and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue? This what I have so far: L=s+6 J=L+5

80. math

On a coordinate system, the segment joining the points (3,8) and (9,16) has the same midpoint as the line segment joining the points (8,11) and (x,13). What is the value of x? I think x=3

81. math

2. Five hundred people, and no others, gathered in front of the White House on certain day to protest the government's immigration policies. Of these 500 people, 60% wore red arm bands showing solidarity with the immigrants. Of this 60%, 20% carried signs.

82. math

If v,w,x,y, and z are consecutive multiples of 3, counting from smallest to largest. What is the value of v-w-x+y in terms of z? A.4z-4 B.-12 C.-30 D.0 E.4z

83. math

I have some problems with these questions: 3. A hat was priced at \$10.80. During a sale, the hat sold for \$9.18. What was the rate of discount on the hat? 4. A man's tax on his home is \$1,952. The tax rate is \$3.20 per \$100 of assessed value of the home? I

84. math

The fraction 5Y3X/2Y8, in which x and Y stand for two unknown digits, represents a division which results in a quotient that is a whole number. Which of the following is (are) true? 1. X may equal 2. 11. X may equal 6 or 0. 111. X may equal 4. not just and

85. math

How many 5-digit even numbers can be made using the digits 2, 4, 6, 7, and 8, if digits cannot be repeated?

86. math

There were 100 pairs of socks 30% of them were sold on Monday and 40% of the remainder were sold on Tuesday. How many pairs of socks were left?

87. math

(1/2)X - (1/2)Y = 4 1. Slove for X 2. Slove for Y not just an answer please

88. math

The base of an isosceles triangle is four less than the sum of the lengths of the legs. If the perimeter of the triangle is 44, find the length of the three sides of the triangle.[ Only an algebraic solution will be accepted ]

89. math

The dimensions of a piece of fabric are 45" by 75". Find the area of the largest square that can be cut from this piece of fabric.

90. math

32x^3y^2z^4 / 4x^4yz^6 =

91. math

Jo saw a dress regularly priced at 78%. It was on sale at a discount of 30%. Find the amount of discount and the sale price.

92. math

If k = p/4, for which of the following values of p does k equal 3 ?

93. AlgebraII

Choose the equation that best represents an ellipse for the given foci and co-vertices. Foci (+/-3,0) Co vertices (0, +/-6)

94. algebra

On three consecutive passes, a football team gains 5 yards, loses 21 yards, and gains 13 yards. What number represents the total net yardage?

95. language

Is the word tower a predicate

96. Pre-Calculus

36x-15y+50z=-10 2x+25y=40 54x-5y+30z=-160

98. Maths

x-1/2-x-2/3=1

17^115