# math

Most popular questions and responses by math
1. ## Math

1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

2. ## math

can someone help me with Lesson 9: Integers and Algebraic Expressions Unit Test for connection academy help plz

3. ## math

A circular track is 1000 yards in circumference. Cyclists A, B, and C start at the same place and time, and race around the track at the following rates per minute: A at 700 yards, B at 800 yards, and C at 900 yards. What is the least number of minutes it

4. ## math

line y=3x-1 is transformed by a dilation with a scale factor of 2 and centered at (3,8). The line's image is Line MN is dilated by a scale factor of 2 centered at the point (0,6). If MN is represented by y=-3x+6, The line's image is

5. ## Math

Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's

6. ## Math

Assume a box contains three red jelly beans and two green ones. We consider the event that a red bean is drawn. Suppose I pick a jelly bean from the box without looking. I record the color but do not put the bean back in the box. Then I choose a bean

7. ## Math

On Halloween, a man presents a child with a bowl containing six different pieces of candy and six different pieces of gum. He tells her that she may have four of each. How many choices does she have? Answer as a whole number.

8. ## mathematics

a1=1 ,an=3an-1+2 for n>2

Bruce bought four packages of cornbread mix that each weighs x pounds. He also bought a package of biscuit mix that weighs pounds more than one package of cornbread mix. If the total weight of the items that Bruce bought is 31 pounds, what is the weight,

10. ## Algebra 1

Suppose y varies directly with x, and y=25 when x=-140. What is the value of y when x=36 A)140 B)165 C)201.6***** D)176

11. ## Geometry

In a triangle, segments AB and AC are trisected, and D is the midpoint of BC. If the area of Triangle ABC is 630 cm^2, then the area of the section marked x, in cm^2, is?

12. ## Math

Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2 Denmark

13. ## Algebra

Use the figure to answer questions 1-3 file:///C:/Users/Student/Downloads/642756-212012-25329-PM-1227809791%20(1).png 1. Name a pair of complementary angles. ∠1 and ∠4 ∠1 and ∠6 ∠3 and ∠4 ∠4 and ∠5 2. If m ∠1 = 53°, what is m ∠4? 53°

14. ## Math

Make a table and graph each quadratic function. Use integers from -3 to 3 for inputs. #4- y= -x2 #5- y=2x squared #6- y= -8x squared #7- y= x squared + 2 Make a table and a graph for each function. Use only positive values for x. #10- y= 10/x #11- y= 8/x

15. ## Calculus

A rectangular garden of area 75 sq ft is to be surrounded on 3 sides by a brick wall costing \$12 per foot and on one side by a fence costing \$7 per foot. Find the dimensions of the garden that the cost of the materials is minimized Read more: A rectangular

16. ## Math

Signals The king has 10 (different) colored flags that he uses to send coded messages to his general in the field. For example, red-blue-green might mean “attack at dawn” and blue-green-red may mean “retreat.” He sends the message by arranging

17. ## Math

write a function rule for the area of a rectangle or picture frame that has a width of 22 in less than its length use the function rule to find the area of the picture frame the length is 39 inches

18. ## Math

The average depth of the water at the end of the dock is 6 feet. High tide occurs at 6 am and low tide occurs at 6 pm. The depth of the water at high tide is 9 feet. The information can be graphed using a sinusoidal function. Your boat needs at least 4.5

19. ## jay

The formula for the perimeter of a rectangle is P=2(l+w)P=2(l+w). Solve for w. w=2P−lw=2P−l w=p2−lw=p2−l w=p−l2w=p−l2 w=P2+l D?

20. ## Math

A park is 300 yds by 500 yds. There is a 4 wide foot walking path going around the entire perimeter of the park. The rest of the park is green space. How much green space is there in the park?

21. ## Math

A user is charged php300 monthly for a particular mobile plan, which includes 100 free text messages. Messages in excess of 100 are charged php1 each. Represent the amount as a function of the number of messages m sent in a month.expressed by the piecewise

22. ## pre-calc

The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and

23. ## Math

The volume of seed in a bird feeder is represented by the equation V = 12(24-h) Q: Make a table of ordered pairs (h,V)

24. ## Math

Kevin moved from a city to a small town. The population of the city was 6 x 10^5, which is about 15 times a great as the small town. Write an expression in scientific notation that represents the population of the small town. I got 4 x 10^4? Please explain

25. ## Finance

Assume that you have a balance of \$5000 on your Visa credit card and that you make no more charges. If your APR is 22% and each month you make only the minimum payment of 3% of your balance, then find a formula for the balance after t monthly payments. A.

26. ## math

what is a word problem for 2x-4=8?

27. ## math

an airline flies two different planes over the same route. THe faster of the two plans travels at 540 miles per hour, and the toher plane tralves at 450 miles per hour. How many more can the faster plane travel in 12 seconds than the slower plane? (Im

28. ## Math

The point c(3, -1) is translated left 4 units up and 1unit. . write the rule for this translation . what are the coordinates of the image point A. (x, y) --> (x+4, y+1);(7, -2) B. (x, y) --> (x- 4, y-1);(-1, 0) * C. (x, y) --> (x+4, y-1);(7, 0) D. (x, y)

29. ## math

find the exact value of the expression: 6tan^2(π/4)+18sec^2(π/4).

30. ## Trigonometry

Zidane and Shemique are looking up at their school from the playing field at the back of the school. From Zidanes point of view, the top of the school is at an angle of elevation of 43 degrees. From Shemique point of view, directly closer to the school it

31. ## math

some money is shared between Ali,Ben & Carl in the ratio 5:3:2.Ben receives \$60.How much money is shared?

32. ## math

mikes truck engine holds 1 1/4 gallons of oil if there are 3 quarts of oil in the engine now how many more quarts of oil does mike need to add to fill the engine capacity? -(hint i gallon is 4 quarts)

33. ## math

Expand cos(50°) using a double angle identity

34. ## math

please simplify s^3/(6s^2 ) for me please urgent cant understand r give me the steps to simplify

35. ## jay

For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h. A=(a+b)2hA=(a+b)2h Solve for a. a=2Ah+ba=2Ah+b a=2A−bha=2A−bh a=2Ah−ba=2Ah−b a=Ah2−b

36. ## Math

THE 4TH TERM IS 37 AN THE 6TH TERM IS 12 MORE THAN THE 4TH TERM .FIND THE FIRST AN SEVENTH TERM

37. ## Math

It costs \$5 for 1 snow cone. Which function rule correctly relates the number of snow cones purchased, s to the total cost c. A. c=s+5 B. c=5s C. c=s÷5

38. ## math

The sum of 4 consecutive odd integers is -104. Find the integers with x for unknown numbers.

39. ## Mathematics

The length of a car park is 12m longer than its with. The area of the car park is 64m². Find the dimensions of the car park?

40. ## Math

Two business partners, Ellen and Bob, invested money in their business at a ratio of 6 to 7. Bob invested the greater amount. The total amount invested was \$260. How much did each partner invest?

41. ## Calculus

Foggy optics, inc. makes laboratory microscopes. setting up each production run costs \$2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to \$20 per microscope per year. storage costs, based on the maximum number of

42. ## math

a) 2 hours per day means? less than 2 hours If you were to choose more than 1 hour which of the three would you choose? can you please check the meanings and the question above^

43. ## math

The capacity of an elevator is either 15 children or 11 adults. If 8 children are currently in the elevator, how many adults can still get in?

44. ## math

Given the vector a= Find the unit vector in the same direction in component form

45. ## Ana

A group of hikers on a mountain began at an elevation of 3040 feet above sea level and stopped at elevation of 2319 feet above sea level. What was their change in elevation between these points? How can you tell from the change in elevation whether the

46. ## geometry

chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building?

47. ## math

an airplane is flying at 550 km/h on a heading of 080. the wind is blowing at 60 km/h from a bearing of 120. Find the ground velocity of the airplane. Please Help! Thanks in advance.

48. ## math

Find the EXACT value of sin(2A) if cscA=5/4 Assume A is a Quadrant I angle in standard position. sin(2A)=

49. ## Math

EVALUATE .LOG 243_LOG27

50. ## math

3x^2+3y^2-12x-30y+84=0 is the equation of a circle with center (h,k) and radius r For: h= k= and r=

51. ## math

Find the EXACT value of cos(2A) if angle A is arctan(12/5). cos(2A)=

52. ## math

Find all solutions of the equation sec^2x-2=0. The answer is A+Bkπ where is any integer and 0

53. ## math

Triangle abc is similar to triangle def, de=4, ab=x, ac=x+2, df= x+6 What does length ab equal?

54. ## math

Which answer best completes the following sentence? Two advantages of a confederation are that it ______ and ______. A: prevents abuse of power by a national government; preserves local identity B: concentrates power in state governments; makes national

55. ## Aria

If a projectile is shot vertically upward from the ground with an initial velocity of 100 ft per sec, neglecting air resistance, its height s (in feet) above the ground t seconds after projection is given by s= -16t^2 + 100t a) After how many seconds will

56. ## math

Find the EXACT value of sin(2A) if cscA=5/4 Assume A is a Quadrant I angle in standard position. sin(2A+=

57. ## math

1. A gallon of a certain kind of paint will cover 224 square feet of surface. In painting two walls; one 36’ by 8’ and the other 24’ by 9’, the number of gallons of paint used is: 2. Susan wants to use blue, yellow, green, and pink paint to

58. ## math

How many ways can 3 students be chosen from a class of 16 to represent their class at a banquet? 3,360 1,680 1,120 560 I think its 560.

59. ## math

if a and b are the roots of the equation x^2-3x+1=0, what is the value of (1/a) + (1/b)? If the function f is defined by f(x) = (x-1)^2 -3, where -1 is less than or equal to x and 3 is greater than or equal to x. Which of the following is the range of f?

60. ## math

Expand 3cos(12a) using a double angle identity in terms of sines.

61. ## Sam E

Let v(t)=t^2−3t be the velocity, in feet per second, of an object at time t , in seconds. (c) What is the meaning of the quantity v(4)? Select all that apply if more than one statement is correct. A. In how many seconds will the object have moved 4 ft.

62. ## math

a carton has a length of 2 and 1/6 feet, width of 1 and 1/5, and hight of 2 and 1/2 feet. what is the volume of the carton

63. ## math

Find the parametric equations of a circle centered at the origin with radius of 4 where you start at point (-4,0) at s=0 and you travel counterclockwise with a period of 2π.

64. ## Arithmetic Progression

In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?

(Airplane & Radar) An airplane is flying (horizontally) at the height of 6 km on a flight path that will take it directly over a radar tracking station (on ground). If the distance D between the plane and the radar is decreasing at a rate of 300 km/hr,

66. ## math help g

Chris has a square garden with an area of 38.4m^2. He decreases the length of each side by 1.7m to make a smaller garden. What is the closet to the perimeter of the smaller garden?

67. ## Math

A manufacture of a certain commodity has estimated that her profit in thousands of dollars is given by the expression -6x^2+30x-10 where x (in thousands) is the number of units produced. What production range will enable the manufacturer to realize a

68. ## algebra

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −1 and 7 highest point has y-coordinate 4

69. ## math

it took 12 gallons of gas to fill the family car this is 5/6 the amount that the tank can hold how much gas can the tank hold? A.10 Gallons B.14 2/5 Gallons C.12 5/6 Gallons D.13 5/6 Gallons-My Answer Please check thanks:)

70. ## math

A college student receives an interest-free loan of \$10,200 from a relative. The student will repay \$200 per month until the loan is paid off. a) Express the amount P (in dollars) remaining to be paid in terms of time t (in months). (Give your answer in

71. ## Math

complex number L = 2 + bj Arg (L) = 5π/6 find all values of b? got 1/sqrt(3) but need it to be positive.

72. ## kayla

A sugar molecule has twice as many atoms of hydrogen as it does oxygen and one more atom of carbon that oxygen. If a sugar molecule has a total of 45 atoms, how many are oxygen and how many are hydrogen?

73. ## Math

How do you do 4ln(2x+3)=11

74. ## Math

The rate of inflation in Ethiopia was 41% in 2008. What was the percentage decrease that year in the buying power of the birr (the currency of Ethiopia)? A. 41.0% B. 69.5% C. 29.1% D. 37.5%

75. ## Stats

A population distribution has σ = 42. How many points from the mean are a z -score of z = +2.00 and a z-score of -1.56?

76. ## math

Both antibiotics were prescribed in high dosage slow release capsules. The function C(x)= 5log(x+1) + 10 models the concentration of levofloxacin in mol/L over a time x, in hours. The function D(x) = 10log(x+1) + 5 models the concentration of metronidazole

77. ## algebra

In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 9 ounces of a 20% glucose solution. When the test is administered to a child, the glucose concentration must be decreased to 10%. How much 20% glucose solution and how

78. ## geometry

im not that good at geometry i need some one to check this for me XY bisects AB at point g which of the following is true about point g a. g is the mid point of AB b. g is the mid point of XY c. g is the mid point of AB and XY d. none of these*

79. ## math

the average attendance of a class from monday to wednesday was 39 and that from wednesday to saturday was 39.5. What was the attendance on wednesday, if the average attendance from monday to saturday was 40 I did this:- m+t+w/3=39 w+Th+F+S/4=39.5

When you write 2,500 in expanded form, how many addends do you have? 2,000+ 500+0+0 ??

81. ## math

Six hundred people attended the premiere of a motion picture. Adult tickets cost \$12, and children were admitted for \$9. If box office receipts totaled \$6720, how many children attended the premiere?

A forest owned by the Jumbo Lumber Corporation contains 7,820 trees. If Jumbo Lumber cuts down 77 trees every day, which function can be used to find the number of trees, n, left in the forest after t days? A. n(t) = 7,820 - 77t B. n(t) = 7,820t - 77(my

83. ## Algebra

A flower garden has 3 times as many red roses than pink roses. Twice the number of red roses is the same as four times the number of pink roses increased by 10, how many red roses are there/ I know that X = red roses and Y = pink rose 1. x=3y and 2x=4y+10

84. ## Haley

Three circles with radii 35cm, 50cm, and 65cm respectively are tangent to each other externally. Find the angles of the triangle formed by joining the centers of the circles. My teacher said to use the cosine law cause you know 3 sides but no angles. But I

85. ## i dont know

What is the capital of the state that shares its long southern border with Texas?

86. ## math

Convert: 2.7x10^-3 kg/cm^3 to kg/m^3 0.81 g/cm^3 to kg/m^3

87. ## math

suppose you have a pipe with circumference of 8 cm and length equal 3 cm and that 10 turn of a wire are wrapped about the pipe. what is the length of the wire

88. ## Liz

A rectangular lawn measuring 8m by 4m is surrounded by a flower bed of uniform width. The combined area of the lawn and the flower bed is 165cm^2. What is the width of the flower bed

89. ## Semia

A circular sinkhole has a circumference of 75.36 meters. A week later, it has a circumference of 150.42 meters. a. Estimate the diameter of the sinkhole each week. The sinkhole is about ? meters the first week. The sinkhole is about ? meters the second

90. ## Math Help

A shop owner bought 30 folders and some journal. He paid @82.50 for the folders. Each journal cost 10 times as much as a folder. What was the cost of each journal?

91. ## Finance

You have a balance of \$7500 on your credit card and you make no further charges. If your APR is 12.5% and each month you make only the minimum payment of 5% of your balance, then find a formula for the balance after t monthly payments. A) 7500(0.959896) t

92. ## pre calculus

Use a calculator to find the approximate value of sin-1( 0.635).

93. ## ms1998

On a windless day, a bird can fly at a constant 10 m/s. It flies 6.0km east and then home again. How much time does the round trip take? I keep getting 600 seconds, but my teacher still tells me it's wrong.

94. ## Check!!!

okay so the question is: A unit circle center at the origin undergoes a series of transformations. The equation of the resulting graph is (x-3)^2+ (y+4)^2= 25 describe the transformation the unit circle underwnt Answer: The original circle was centered at

95. ## math

An algebra student has won \$500,000 in a lottery and wishes to deposit it in savings accounts in two financial institutions. One account pays 11% simple interest, but deposits are insured only to \$250,000. The second account pays 6.3% simple interest, and

96. ## math

The graph below shows the rate of natural gas usage (in therms per day) in one household for a 30 - day period. Estimate the total number of therms used during this period. Use left endpoints and rectangles with widths of 3 days. View graph at: postimg.o r

97. ## math

The ratio of the ages of ramu and his sister is 3:4 . If the age of his sister is 36,how old is ramu?

98. ## math

the area of an equilateral triangle is given by the expression s^2 x square root of 3/4, where s is the side length of the triangle. what is the area of the triangle? round to the nearest tenth the triangle is 5 cm on all three sides.

99. ## math

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit) 2BA +C6D____ 8AD

100. ## math

what is 57% of 11?

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