Tuesday
April 21, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
What if the mural were in the shape of a square with an area of 81 square feet. What would the height of the mural be? Explain
Thursday, April 9, 2015 at 6:04pm

math
what is the procedure for solving the equation 1/2x = 16. I am stuck. Please help me.
Thursday, April 9, 2015 at 6:00pm

Math
Solve for the zeros of the function using the quadratic formula. 3x^2=-4x+6 I know what the quadratic formula is but when I put it into the formula I keep getting an error on the graphing calculator.
Thursday, April 9, 2015 at 5:56pm

Math
the length of a rectangular garden is 5 less than twice the width find the length of the garden if the area is 88 square feet
Thursday, April 9, 2015 at 5:54pm

Math
A function is described by the equation f(x)=x^2-3. The replacement set for the independent variable is (2,4,7,9) What is the corresponding set for the dependent variable
Thursday, April 9, 2015 at 5:49pm

math, probability
There are six ways to write 5 as an ordered sum of three positive integers: 3+1+1, 1+3+1, 1+1+3, 2+2+1, 2+1+2, 1+2+2. A) What is the number of ways to write "n" as an ordered sum of "r" integers? B) What is the number of ways to write "n" as an ...
Thursday, April 9, 2015 at 5:48pm

Math
The capacity of a 1 cm cube is 1 mL. How many 1 cm ice cubes would you need to melt to fill a 1.5 L jar?
Thursday, April 9, 2015 at 5:19pm

Math Check
Hi! I need help with this one problem. My teacher told me that I could use any method to solve the following system and this is the answer I got; (1/2,2/5). Is this correct? 0.15r + 0.85s = 0.23 0.20r + 1.25s = 0.33 Write answer in (r, s).
Thursday, April 9, 2015 at 4:54pm

math
The 1st,5th,13th term of an arithmetic sequence are the first 3 terms of geometric sequence with a common ratio of 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
Thursday, April 9, 2015 at 4:20pm

Math
When you are multiplying a 7 x 3 matrix by a 3 x 2 matrix, what would the resulting matrix be of which order? Write your answer is a x b form.
Thursday, April 9, 2015 at 4:15pm

math
How to write three linear system that are equivalent to the linear system shown? 5x-4y= -3 2x + 7y= 5
Thursday, April 9, 2015 at 3:29pm

math
An architect is designing an office building with n floors that will have an FM radio antenna 15.85m tall on its roof. Each floor of the building will be 3.9m high. Which equation can be used to find the total height, h, of the building in meters, including the FM antenna? A. ...
Thursday, April 9, 2015 at 3:15pm

Math (Help please)
Hi! I'm a little confused on what I'm suppose to do for this problem. Can someone help? Thanks! Directions: Which element would be in Row 3, Column 1? [1 5 6 -2 7 11 4 0 -1 2 9 7]
Thursday, April 9, 2015 at 3:14pm

Math
Dominic used the equation below to find d, the amount in dollars he would spend on gasoline to drive a distance of m, miles. d= m/25(3.5) Based on this equation how much would Dominic need to spend on gasoline to drive a distance of 1800 miles? A. $25.50 B. $21.00 C. $24.50 D...
Thursday, April 9, 2015 at 3:07pm

Math
Which situation can be represented by the equation y= 12x - 4? A. The number of eggs , y, in x, dozen eggs for sale after 4 dozen eggs are sold. B. The cost of, y, of buying x movie tickets that sell for 8$ each. C. The cost, y, after a 4$ discount, of buying x t-shirts that ...
Thursday, April 9, 2015 at 3:04pm

math
Bobby has been driving at a constant speed for the last 30 minutes. If Bobby is traveling at a speed of 70 miles per hour, which equation best represents the relationship between time in hours(c) and distance in miles (d). A. d = 70t B. t = 70d C. d = t + 70 D. t = d + 70 ...
Thursday, April 9, 2015 at 2:12pm

math
Boris has a coin and a number cube. The number cube is labeled 1-6. He flips the coin once and rolls the number cube once. What is the probability that the coin lands tails up and the cube lands on a even number? A. 2/3 B. 1/4 C. 1/12 D. 1/6 How do i solve this problem? I'...
Thursday, April 9, 2015 at 2:08pm

Math
Suppose f(x) = 4x^5-(1/x^4) Find the slope of the tangent line to the graph of y = f^–1(x) at (3, 1). You get: 1/24 1/16 00062 1620 972
Thursday, April 9, 2015 at 2:03pm

math
A floor tile is 20 inches wide. If the perimeter of the tile is 72 inches, what is the length of the tile?
Thursday, April 9, 2015 at 1:57pm

Math
Suppose f(x) = sin(pi*cosx) On any interval where the inverse function y = f –1(x) exists, the derivative of f –1(x) with respect to x is: a)-1/(cos(pi*cosx)), where x and y are related by the equation (satisfy the equation) x=sin(pi*cosy) b)-1/(pi*sinx*(cos(pi*cosx...
Thursday, April 9, 2015 at 1:57pm

math
Students in Mrs. Doyles classes use 3/4 of a bottle of hand sanitizer every week. Which expression can be used to find how many bottles of hand sanitizer the students will use in 12 weeks. A. 12 x 3/4 B. 12 + 3/4 C. 12 - 3/4 D. 12 divided by 3/4 I have narrowed it down to A ...
Thursday, April 9, 2015 at 1:51pm

math
Elisa surveyed people in her neighborhood about whether they would like to have a swimming pool in their community park. Of those who responded, 65% were in favor of having a swimming pool. Based on these results, which statement could be true? A. Elisa surveyed 10 people, 6 ...
Thursday, April 9, 2015 at 1:39pm

math
2 line segments intersect to form an angle that has a measure pf 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle. I dont understand what this question is asking me. Can someone explain it to me?
Thursday, April 9, 2015 at 1:19pm

math
There are 5 numbers in a set of data. There are no repeated numbers. Which measure of data must represent a number in the set that is greater than 2 of the numbers in the set and less than 2 of the numbers? A. Median B. Mean C. Mode D. Range Can someone please explain how to ...
Thursday, April 9, 2015 at 12:59pm

Math
Jeremy uses the linear function G=12h+50 to represent the grade, G (in points out of 100), that he can earn on an exam as a function of h, the number of hours he spends studying for the exam. 1.) Identify the slope and y-intercept of Jeremy's function and explain what they...
Thursday, April 9, 2015 at 12:54pm

7th grade math
Quadrilateral WXYZ os describes below. Line segment WX is parallel to line segment YZ. Line segment XY is the same length as line segment ZW. Line segment Xy is not parallel to line segment ZW. Which of the following describes quadrilateral WXYZ? A. parallelogram B. rectangle ...
Thursday, April 9, 2015 at 12:54pm

Math
A company predicts that this years sales will be equivalent to 144% of last years sales. Which value represents 144%? A. 14.4 B. 1 11/25 C. 1.56 D. 14 4/5
Thursday, April 9, 2015 at 12:48pm

math help please
Determine which function has the greater rate of change in questions 1−3 1. x y ------- -1 0 0 1 1 2 2 3 (1 point) The rates of change are equal. The graph has a greater rate of change.*** The table has a greater rate of change. none of the above 2. y = 2x + 7 The slopes...
Thursday, April 9, 2015 at 11:28am

math
An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the kinds of cones? Thanks ...
Thursday, April 9, 2015 at 11:02am

Ib math
The marks of 2376 students in an IB exam are normally distributed with mean 49 marks and variance 225 A) if the mark is 45 estimate the number of candidates who passed the exam? B) if top 7% of students are awarded a 7, find the minimum mark required to obtain a 7? mean=49 ...
Thursday, April 9, 2015 at 10:31am

math
2 3/7 + 3/8
Thursday, April 9, 2015 at 9:25am

Math
Put this matrix in Reduced Row Echelon Form. Make sure that you list the Elementary Row Operations that you use and show every step in order to solve this. [ 1 2 1 -2 -3 1 3 5 0]
Thursday, April 9, 2015 at 8:24am

math
a model rocket is projected straight upward from the ground level. It is fired with an initial velocity of 192 ft/s. How high is the rocket after 10 seconds? When is the rocket at a height of 432 feet? What is the maximum height of the rocket? When will the rocket hit the ground?
Thursday, April 9, 2015 at 2:57am

math
a model rocket is projected straight upward from the ground level. It is fired with an initial velocity of 192 ft/s. How high is the rocket after 10 seconds?
Thursday, April 9, 2015 at 2:49am

Math.
For question 1-4 for the interest. All rates are annual interest rates. 1) principal, $400 rate, 5% time, 1 year. a. $10 b. $20 c. $40 d. $200 2) principal, $1,000 rate, 8.5% time, 3 years a. $255 b. $170 c. $22.5 d. $17 3) principal, $200 rate, 9% time, 1/2 year a. $9 b. $18 ...
Thursday, April 9, 2015 at 2:23am

math (explanation and answer)
A conical drinking cup is made from a circular piece of paper of radius R inches by cutting out a sector and joining the edges CA and CB. Find the radius, height and volume of the cone of greatest volume that can be made this way
Thursday, April 9, 2015 at 2:06am

Math
1. The sum of the ages of two brothers is 46. The younger brother is 10 more than a third of the older brother's age. How old is the younger brother? 2. You have 59 total coins for a total of $12.05. You only have quarters and dimes. How many of each coin do you have?
Thursday, April 9, 2015 at 1:38am

math
What is the value of x in the system shown? y=1/5x+2 y=x-4
Thursday, April 9, 2015 at 1:25am

Math
An ice cream store sells 30 different flavours of ice cream and it offers a choice of 3 different kinds of cones. In how many ways can we order a dozen two-scoop ice cream cones if any two of them in one order must differ at least by a flavor or by the kinds of cones? Thanks ...
Thursday, April 9, 2015 at 1:10am

math
What is the value of y in the system shown? y=12x-3 y=-2x+4 Thanks
Thursday, April 9, 2015 at 12:37am

math
A city park employee collected 600 cents in nickels, dimes and quarters at the bottom of a wishing well. There were 10 nickels and a combined total of 25 dimes and quarters. How many dimes and quarters were at the bottom of the well? I know the answer but need help with what ...
Thursday, April 9, 2015 at 12:12am

math /fraction
a container of fruit punch contains one half apple juice, one third pineapple juice and one sixth orange juice. If the container contains 12 cups how many cups are pineapple juice?
Wednesday, April 8, 2015 at 11:16pm

Math
There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow) A. 40/900 B. 5/30 C. 8/30 D. 40/870 Is the answer D? Thank you
Wednesday, April 8, 2015 at 10:46pm

math
a polygon has a perimeter of 30inches. each side is 6inches long. what is the figure
Wednesday, April 8, 2015 at 10:40pm

Math
Solve this system that is represented by the following matrix. [1 -2 -2| -3 0 5 3| 13 0 0 1| 1] Write answer in (x, y, z)
Wednesday, April 8, 2015 at 10:35pm

Math
Thr number cube shown is rolled and the spinner shown is spun. Find P(an odd number and yellow). The cube shows the numbers 1,5,3. The color on the top left square is yellow, the bottom left squares color is blue, the color on the top right square is green, the bottom right ...
Wednesday, April 8, 2015 at 10:34pm

math
use order of operation to simplify 24+20DIVIDED BY 4-(3TIMES2)
Wednesday, April 8, 2015 at 10:18pm

math
A crate is 7ft. Wide 7ft. Deep and 7ft. Tall write the measurements of the crate in exponential notation, standard form, and expanded form
Wednesday, April 8, 2015 at 9:34pm

Math
Solve the equation. Choose the answer in simplest form. 4x = 8/7 a. 1/28 b. 1/7 c. 2/7 d. 7/2 Would the correct answer be b.
Wednesday, April 8, 2015 at 8:29pm

Math
Thomas put 1/4 of the c coins he had in his pocket into the jar under his bed. He put 16 coins into the jar. The equation that models this situation is 1/4c = 16. How many coins did Thomas have in his pocket? a 4 coins b 12 coins c 20 coins d 64 coins The answer would be c.
Wednesday, April 8, 2015 at 8:19pm

Math
Solve the equation 13r = 3/7. Express your answer in the simplest form. a r = 91/3 b r = 7/39 c r = 39/7 d r = 3/91 Is c the correct answer.
Wednesday, April 8, 2015 at 8:12pm

Math
With which letter can you make exactly 2 polygons by drawing 2 more line segments?
Wednesday, April 8, 2015 at 8:02pm

Math
If you were stacking 13 in. boxes in a 58 in. closet, would you round up or round down to determine how many can fit? How many would fit? How do I solve this problem.
Wednesday, April 8, 2015 at 7:51pm

Math
Jill said that an angle is made of any two rays. Is she correct? Explain
Wednesday, April 8, 2015 at 7:42pm

Math
A number cube is shown is rolled and a spinner is spun. Find P(an odd number and yellow) The cube numbers are 1,5,3 that are being shown. The spinners colors are yellow in the top left corner, blue in the left bottom color, green in the top right color, yellow in the bottome ...
Wednesday, April 8, 2015 at 7:30pm

Math
The perimeter of a rectangular garden is (3x + 12) feet. What is the perimeter of the garden in factored form?
Wednesday, April 8, 2015 at 7:28pm

Math didn't post problem right
find the Quotient: 1,754/21 a 1733 b 21 11/83 c 83 11/21 d 1775 Is C the correct answer. I had post the problem wrong. Sorry
Wednesday, April 8, 2015 at 7:24pm

Math
find the quotient: 1,754/12 a 1733 b 21 11/83 c 83 11/21 d 1775 Would C be the correct answer?
Wednesday, April 8, 2015 at 7:14pm

Math
A number cube is rolled and a spooner is spun P(5 and blue) The spinner has four squares The top left corner is yellow the bottome left corner is blue the right top corner is green the bottome right corner is yellow. The spinner is on the green square. The cube numbers showing...
Wednesday, April 8, 2015 at 6:51pm

math
maya thinks the theater sold 1,256 regular-price tickets.jonah says that 1,248 regular-pricetickets were sold.do you agree with either person
Wednesday, April 8, 2015 at 6:39pm

Math
Put this matrix in Reduced Row Echelon Form. Make sure that you list the Elementary Row Operations that you use and show every step in order to solve this. [ 1 2 1 -2 -3 1 3 5 0]
Wednesday, April 8, 2015 at 6:32pm

Math
can prisms that have the same height and same base perimeter have different volumes?
Wednesday, April 8, 2015 at 6:32pm

Math
Trying to find the rule & equation for the function table. x= 1, 2, 3, 5, 10, 12 y= 9, 13, 17, 25, 45, 53
Wednesday, April 8, 2015 at 6:30pm

Math
Which of the following is an example of an independent event? A. Choosing one sock at random from your drawer, putting it on and then choosing another at random. B. Flipping a coin and rolling a number cube. C. Choosing students at random for basketball teams. D. Removing a ...
Wednesday, April 8, 2015 at 6:16pm

Math
The Leaning tower of pisa is 55.9m tall and leans 5.5 degrees from the vertical. If its shadow is 90.0m long, what is the distance from the top of the tower to the top of the edge of it’s shadow? Assume that the ground is level.
Wednesday, April 8, 2015 at 6:02pm

Math
Which of the following is an example of a dependent event? A. Flipping two coins B. Rolling a number cube and spinning a spinner. C. Choosing two scoops of ice cream. D. Choosing a cookie at random,eating it, and then choosing another at random. Is the answer D? Thank you
Wednesday, April 8, 2015 at 5:40pm

Math help
Which expression represents the quotient 3.36/6. A. (3/6)+(0.03/6)+(0.6/6) B. (3/6)+(0.30/6)+(0.06/6) C. (6/6)+(0.03/6)+(0.6/6) D. (6/6)+(0.30/6)+(0.03/6) I think it's B but not sure of how I really got the answer anymore.
Wednesday, April 8, 2015 at 5:31pm

Math
Directions: Does the following inverse of [2 6 exist? 1 3] If it isn't an inverse, explain why.
Wednesday, April 8, 2015 at 5:30pm

math
write a system of equations that is not linear and graph. can this work equation work? 3x+2y=12 3x+2y=6 1. 3x+2y=12 y=-3/2x + 6 2. 3x+2y=6 y = =3x/2+3 when i graph it will be parallel.
Wednesday, April 8, 2015 at 5:11pm

math
Janet has 4} 9 gallon of paint. She uses 1} 8 of the paint she has to cover 3 canvases. She uses the same amount of paint to cover each canvas. What amount of paint does Janet use to cover each canvas?
Wednesday, April 8, 2015 at 5:09pm

math
Aubrey has a shelf full of books. • Exactly 1} 3 of the books on the shelf are mysteries. • Aubrey has read 10 of the mysteries on the shelf. • The number of mysteries Aubrey has read is greater than }1 5 of the number of mysteries on the shelf and less than }1 ...
Wednesday, April 8, 2015 at 5:08pm

math
The cost of a student ticket to the school play is $7. Write an equation that correctly relates the cost, c, for a particular number of student tickets, s, purchased. Identify the independent and dependent variables.
Wednesday, April 8, 2015 at 4:49pm

Algebra 2 math
In triangle GHI, angle H is a right angle, GH = 40, and cos G= 40/41. Draw a diagram and find each value in fraction and in decimal form. a) Sin G b. Sin I c. Cot G d. csc G e. cos I f. sec H - I have no idea how to do this
Wednesday, April 8, 2015 at 4:47pm

Math 141
A pair of fair 6-sided dice is rolled. What is the probability that a 3 is rolled if it is known that the sum of the numbers landing uppermost is less than or equal to 6?
Wednesday, April 8, 2015 at 4:42pm

Math
If it takes 3.5 yds to make 50 items, how many yds would it take to make 3000 items?
Wednesday, April 8, 2015 at 4:38pm

math
How much would it cost to drive 54.2 miles in a car that gets 16 miles per gallon and gasoline costs $2.31 per gallon?
Wednesday, April 8, 2015 at 4:12pm

Finite Math
Juan invested $24,000 in a mutual fund 5 years ago. Today his investment is worth $34,616. Find the effective annual rate of return on his investment over the 5-year period.
Wednesday, April 8, 2015 at 3:57pm

math
A rectangle has a length of 6x+3 units and a width of 8 units. Write a simplified expression for the area, in square units, of this rectangle. So, my answer was 9x+8 please tell me is this correct... Thank you
Wednesday, April 8, 2015 at 3:26pm

Math
Travis is making 5 lasagna using 12 cups of cheese. Which number represents the amount of cheese he will use per lasagna?
Wednesday, April 8, 2015 at 3:23pm

math
A tractor bought for R120 000 depreciates to R11 090,41 after 12 years by using the reducing balance method. Calculate the rate of depreciation per annum if the rate was fixed over the 12 years, and calculate the effective interest rate if interest is 9,8% p.a., compounded ...
Wednesday, April 8, 2015 at 3:05pm

math
To the nearest tenth, what is the distance between (7,4) and (12,5)? a) 4.8 units b) 4.9 units C) 5.0 units d) 5.1 units Please explain. Thank you.
Wednesday, April 8, 2015 at 2:40pm

math
these marbles are placed in a bag and two of them are randomly drawn what is the probability of drawing two pink marbles if the first one is placed back in the bag before the second draw thebag has 10 marbles.2 yellow.3 pink.5 blue
Wednesday, April 8, 2015 at 2:34pm

Math
Pier one had a sale-buy two for $ 12 EACH and get the third free.how much would she spend to get 15 beanbag chairs? Need to show work
Wednesday, April 8, 2015 at 1:50pm

math
Let A = {a, b} and list the four elements of the power set P (A). We consider the operations + to be ∪, · to be ∩, and complement to be set complement. Consider 1 to be A and 0 to be ∅. a). Explain why the description above defines a Boolean algebra. b...
Wednesday, April 8, 2015 at 1:48pm

wisdom house
Math. Change these fraction into as sending order 4/3, 7/8,3/16
Wednesday, April 8, 2015 at 1:40pm

math
3.Graph the points A(–5, 0 ), B(–4, 3), and C(0, –4) on the same coordinate plane. 2. Without graphing, identify the quadrant in which the point (x, y) lies if x < 0 and y < 0. (1 point) 3.Determine which ordered pair is a solution of y = –5x + 10. (1...
Wednesday, April 8, 2015 at 1:10pm

Math---PLEASE, HELP ME!!!
How long will it take to travel 614 km. when you are moving at a rate of 5 cm. per year?
Wednesday, April 8, 2015 at 12:58pm

math
what are the different 4-digit combinations that can be made from using 5, 6, 3, 8, if the number can appear just once?
Wednesday, April 8, 2015 at 12:46pm

Math (Please help ASAP)
How do I solve this equation (q+p^2-33p=9) for the point of elasticity in terms of p? Thank you!
Wednesday, April 8, 2015 at 12:01pm

Math
What value of x makes this equation true? 1/3(9x-2)+1=2(4x+1) a) x=-3 b)x=-1/3 c)x=1/3 d)x=3 Please explain. Having a hard time figuring out.
Wednesday, April 8, 2015 at 11:47am

Math
Q. Ted's dad agreed to take out the eight players on Ted's basketball tea, for ice cream sundaes. Each of the players ordered an ice cream sundae for $2.49. What was the total bill? - A. Do I just mulpite 8 by $2.49?
Wednesday, April 8, 2015 at 11:23am

MATH
Elaine is painting a fence. She knows that she needs 1 gallon of paint for each 10 feet of fencing. The fencing will enclose a rectangular yard that is 3 yards long and 2 yards wide. How much paint does Elaine need? (Remember 3 feet = 1 yard)
Wednesday, April 8, 2015 at 10:32am

math
solve sinx/2,cosx/2 & tanx/2 of the following:- (a)sinx=1/4 & x lies in second quadrant.
Wednesday, April 8, 2015 at 12:56am

Math
Patterns and colors on seventeenth to nineteenth century kimonos were used to identify the hometown of which of Japanese citizen? A. Farmers B. Nobility C. Warriors D. Lawmakers Is the answer C. Thank you
Tuesday, April 7, 2015 at 11:33pm

math
Five friends picked 7 pounds of apples. They will share the apples equally. How much will each get?
Tuesday, April 7, 2015 at 9:55pm

Math
A 12 foot-high pole casts a 9 foot long shadow, at the same time of day, what would be the length of a shadow cast by a 45 foot-long tree
Tuesday, April 7, 2015 at 9:53pm

finite math
Find the amount of an ordinary annuity for 5 years of quarterly payments of $2,200 that earn interest at 4% per year compounded quarterly.
Tuesday, April 7, 2015 at 9:52pm

math
Janet has 4 }9 gallon of paint. She uses 1 }8 of the paint she has to cover 3 canvases. She uses the same amount of paint to cover each canvas. What amount of paint does Janet use to cover each canvas?
Tuesday, April 7, 2015 at 9:48pm

Math
A multiple-choice question has five possible answers. What are the odds in favor of guessing the right answer? A.2:3 B.4:1 C.1:4 D.3:2 Is the answer C? Thank you
Tuesday, April 7, 2015 at 9:34pm

math
the perimeter of a rectangle is 35.54 inches longer than the perimeter of a square of side 6.75 inches. Find the perimeter of the rectangle to the nearest tenth of an inch.
Tuesday, April 7, 2015 at 9:33pm

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