# Math

Popular questions and responses by Math
1. ## math

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

2. ## 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

3. ## 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

4. ## 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

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

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

7. ## math

A pharmacist is to prepare 15 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 7% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock. How much of each type of solution should be

8. ## Math

These two scalene triangles are similar with a scale of 5:2. What is true about these figures? A. a/e = 1 B AB/DE = 2/5 C AC/DF = 5/2 D c/f = 5/2

9. ## 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?

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,

11. ## 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?

12. ## math

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

13. ## 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

14. ## 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?

15. ## jayne

Five socks, colored blue, brown, black, red, and purple are in a drawer. how many combinations of three socks can be randomly selected from the drawer?

16. ## 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)

17. ## 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

18. ## math

solve the system of equations using the substitution method. y=2x-5 3x+4y=-9

19. ## 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

20. ## math

you a framing a picture that is 5 in by 7in. with a 1 inch wide frame. find the perimeter of the outside edge of the frame. explain, pleaswe i know the anser is 32 but why?

21. ## 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

22. ## math

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

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

24. ## math

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

x+2y=4

26. ## math

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

27. ## mathematics

Khamis earns 55dollars per week working part-time at a book store. He makes one dollar more for each book that he sells. The amount, A (in dollars), that Khamis earns in a week if he sells b books is given by the following function. A(b)=55+6 How much does

28. ## mathematics

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

29. ## 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?

k _ 6 > 4

31. ## Math

I am a 5 digit number. All my digits are the same and the sum of digits is 40 .

32. ## 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

33. ## 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

34. ## 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

35. ## Math

f(x) = 6x^2 + 7x − 20 Find the maximum or minimum value of f(x). (Round your answer to two decimal places.)

36. ## 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?

37. ## 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^

38. ## 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)

39. ## math

One half a number minus 6 is 4 . What is the number?

40. ## 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

41. ## pre calculus

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

42. ## Peter

For all positive integers w and y, where w > y, let the operation ☺ be defined by w ☺ y = (2^(w + y))/(2^(w - y)). For how many positive integers w is w ☺ 1 equal to 4? A. More than four B. None C. One D. Two E. Four *I found only 3/5 as the answer

43. ## math

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

44. ## SCIENCE

HEIGHT OF CLASSROOM DOOR

45. ## math

solve each system by elimination 15x - y = 3 5x - 10y = 30 im stuck with what to do first

46. ## 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

47. ## 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

48. ## 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

49. ## MATH

The grocery store parking lot is shaped like a parallelogram. Mr.Campbell is paving the parking lot.The area of the parking lot is 6x^2-3x-3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2-x-m^2) as my first step but now i

50. ## 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

51. ## 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)

An art teacher had a total of t markers. He gave an equal number of markers to each of 18 students and had 16 markers left over. Which equation could be used to find n , the number of markers each student received? A t = 18n B t = 34n C t = 18n + 16 D t =

53. ## Algebra 1

There are 8 boys on a bus. Each boy has 8 backpacks. In each backpack, there are 8 big dogs. For every big dog there are 8 little dogs. How many legs are there in the bus?

54. ## 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

55. ## math

Two station astronauts will each perform three 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please

56. ## math

the average weight of men in a meeting room is 170 pounds, and average weight of women is 130 pounds. if more than 60% of the people in the room are men, which of the following could be the average weight of all the people in the room?

57. ## 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

58. ## math/science

what is dimensional analysis and how does it work?

59. ## alicia

Okay, write the expression or inequality. : the difference of a number z and 11 is equal to 35 How would I do that? please explain in great detail

60. ## math

What is the first step in solving the linear system {2x − 3y = 11 {−x + 5y = −9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve

61. ## Math

Ram bought some bags of cement each 49.7kg. lf the total weight of all the bags is 1143.1kg. how many bag did he buy?

62. ## math

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

63. ## math

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

64. ## Math

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

65. ## 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

66. ## 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

67. ## 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:)

68. ## 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?

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

70. ## 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.

71. ## 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

72. ## CALCULUS

Starting with the graph of f(x)=5x, write the equation of the graph that results from reflecting f(x) about the line y =4. y=_______? Thank you!

73. ## Math

For a 3-person relay race, a coach can choose from 4 of his top runners.how many different 3- person teams can he choose ? Use the act it out strategy.

74. ## ALGEBRA

(-13,-15) and (-6,-18) Find the slope, if it exists, of the line containing the pair of points

75. ## math

4x-4=3x-2 im confused of the steps/ how to solve. My teacher did it weird so searched google and it was weirder. help is appreciated

76. ## math

what did I do wrong my teacher said that hey are all integers, no fractions or decimals solving sytems of equations by elimination -6x - 7y= 20 -5x -8y =8 My work: -5(-6x - 7y= 20) 6(-5x -8y =8) 30x -35y = -100 + -30x-48y = 48 ________________ -83y = -52

77. ## math

Expand cos(50°) using a double angle identity

78. ## 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.

79. ## math

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

80. ## math

Find the equation of the line in slope-intercept form. b=4 and m=−5

81. ## math

There are 120 student in class in which 20 of them are girls and rest boys.if the average marks in math of boys is 65% and that of girls is 80%. find the average marks of the class

82. ## 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

83. ## Math

Find the function rule (-2,9) (-1,4) (0,-1) (1,-6) (2,-11) I think the function rule is you subtract 5 from the y as you go on.

84. ## math

the circumference of s sphere is measured to be 10 cm with an error of 0.4cm.the this radius is used to calculate the area and volume.find the errors in the calculated radius,area and volume

85. ## math

Debra has \$67 loonies and toonies. If there are 45 coins in total, how many loonies are there

86. ## Math

Did John Cena ever do math? It doesn't look like he did..

87. ## Pam

How to find the vertex ? f(x)= x^2-3

88. ## Math

A class has 30 boys and 25 girls. what is the percentage of boys in the class?

89. ## 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

90. ## physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3?

91. ## 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

92. ## Ap series

Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

93. ## 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

94. ## Math

Ms. Vellake loves to read. She read 522 hours in 29 weeks. If she read an equal number of hours each week, how many hours did she read each week?

95. ## Math

Find the inverses of each of the functions below algebraically. a.3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8

96. ## Math

10. Suppose the stock of Microsoft increases in value by \$5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? A) 37.80 points up B) 30.24 points up C) 22.68 points up D) 15.12 points up

97. ## 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

98. ## MNHS_HELP

What is the least number of square pieces into which a cardboard, 13 ft long 8 ft wide, can be cut?

99. ## 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