Tuesday

April 21, 2015

April 21, 2015

**Math please help **

In triangle PQR, we have <P = 30 degrees, <Q = 60 degrees, and <R=90 degrees. Point X is on line PR such that line QX bisects <PQR. If PQ = 12, then what is the area of triangle PQX? I have determined that i need to use the equation PR/\sqrt{3}, but i cannot find PR.
*Wednesday, April 1, 2015 at 11:25pm*

**math please help **

Point X is on line AC such that AX = 3 CX = 12. If <ABC = <BXA = 90 degrees, then what is BX? I'm having a really hard time drawing this out. Is there an easy equation to use for this that won't include drawing it?
*Wednesday, April 1, 2015 at 11:06pm*

**Math (ASAP)**

Find the variable for the following 3x3 matrix. |x 3 -1 2 1 -2 4 1 x|
*Wednesday, April 1, 2015 at 10:19pm*

**math please help **

Find the area of triangle ABC if AB = BC = 12 and <ABC = 120 degrees Should approach this with SSS similarity? If yes will the answer be clear or will i need to manipulate it, and how.
*Wednesday, April 1, 2015 at 10:17pm*

**math**

what is 4(y*y)? is it 4y*4y, or can u not distribute, and why?
*Wednesday, April 1, 2015 at 9:41pm*

**Math, please help**

Dennis will roll two number cubes once. Each cube is labeled 1 to 6. What is the probability that the sum of the cubes will be an odd number?
*Wednesday, April 1, 2015 at 8:45pm*

**Math **

How do I solve this inequality? 3x<12
*Wednesday, April 1, 2015 at 8:41pm*

**math**

A painting is hung on a wall in such a way that its upper and lower edges are 10 ft and 7ft above the floor, respectively. An observer whose eyes are 5 ft above the floor stands x feet from the wall. How far away should the observer stand to maximize the angle subtended by the...
*Wednesday, April 1, 2015 at 8:41pm*

**7th grade math**

Can you check the following? 1. (-1/3)x = -5 multiply both sides by -3 because dividing by fraction is same as multiplying by its reciprocal, right? Ans: -5(-3)= 15 2. x - (-3) = -8 + (-3) + (-3) x = -11 3. The signup fee to join Flexible Fitness Gym is $25. The monthly fee is...
*Wednesday, April 1, 2015 at 8:26pm*

**math**

Writ anumerical. Expression for each word phrase 18 less 25
*Wednesday, April 1, 2015 at 8:15pm*

**Math**

Find the variable for the following 3x3 matrix. |x 3 -1 2 1 -2 4 1 x| Note: This entire matrix =10
*Wednesday, April 1, 2015 at 8:13pm*

**math (urgent)**

A basketball or some stadium holds 20000 people. On average 140000 come to see the match. Average ticket price is $75. market research shows that if ticket price is decreased by $5 800 more people buy tickets. Find the price that will maximize revenue and find maximum revenue?
*Wednesday, April 1, 2015 at 6:54pm*

**math**

On a centimeter dot grid, draw all possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters.
*Wednesday, April 1, 2015 at 6:25pm*

**Math**

1. Ashlyn took out a loan for $700 to buy a new Tv. The bank to going to charge her 3% compound interest. What amount will Ashlyn owe the bank after 3 years 2. Determine the value of a $100 investment earning 10% compound interest over 2 years.
*Wednesday, April 1, 2015 at 6:18pm*

**math**

solve the equation 6y-2=8y-5
*Wednesday, April 1, 2015 at 5:58pm*

**Math**

A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers in excess of 1000. ...
*Wednesday, April 1, 2015 at 5:15pm*

**7TH MATH HELP**

3. What is the correct description for the translation of A to A'? A(10, 3) A'(1, 6) right 9; up 3 left 9; down 3* right 9; down 3* left 9; up 3 The point C(x, y) is reflected over the x-axis. Use arrow notation to describe the original point and its reflection. (1 ...
*Wednesday, April 1, 2015 at 5:08pm*

**Math / Algebra 2**

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help.
*Wednesday, April 1, 2015 at 4:50pm*

**Math**

What part of a yard is 1 1/2 feet?
*Wednesday, April 1, 2015 at 4:49pm*

**Math**

the car on the hydraulic lift in figure 22-2 has a weight of 16,170 N. Piston B has a surface area of 5,005 centimeters cubed; Piston A has an area of 65 centimeters cubed. What force must be applied to Piston A to lift the call? I tried to do 16,170 by 5,005 but I dont think ...
*Wednesday, April 1, 2015 at 4:29pm*

**Math**

Mrs. Birdsong charged a total of $3,450 for 30 pieces of her pottery. She charged the same amount for each of the remaining pieces. How much did she charge per piece if pottery?
*Wednesday, April 1, 2015 at 4:08pm*

**Math**

Are the following expressions equivalent? Prove your answer. 5(3x+2) and 15x+10
*Wednesday, April 1, 2015 at 3:57pm*

**Math**

If it costs $500 per ton to ship a vehicle, how much will it cost to ship a minivan that weighs 4,500 pounds?
*Wednesday, April 1, 2015 at 3:42pm*

**Math **

Of 1901 people who came into a blood bank to give blood, 315 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure
*Wednesday, April 1, 2015 at 3:10pm*

**math**

The vertices of ^ABC are A (2,-5), B(-3,5) AND c(3,-3) The Triangle is reflected over the x-axis. I think the answer would be A(2,-5), B(-3,5), C(3,-3) ->(-2,-5), (3,5), (-3,-3)
*Wednesday, April 1, 2015 at 2:59pm*

**math help**

Given DC = 7, CB = 8, AB = 1/4 AD, and ED = 4/5 AD, find FC. Express your answer as a decimal. not sure how to tackle this one
*Wednesday, April 1, 2015 at 2:14pm*

**math**

1.A square has side lengths of 3 units. One of its vertices is at (5, -2). Which of the following are possible coordinates of another vertex? a)(9,-2) b)(8,-2) c)(5,5) d)(5,-1) idk can someone help i am confused
*Wednesday, April 1, 2015 at 1:55pm*

**math help needed bad**

I'm really confused on how to answer this question. Can someone help me to figure this out? Thank you A survey about the student government program at a school finds that of 245 students: -218 like the program -27 students think this program is unnecessary. If a circle ...
*Wednesday, April 1, 2015 at 1:37pm*

**Math**

What is the correct description for the translation of A to A? (10,3)-> (1,6) right 9; up 3 left 9; down 3 right 9, down 3 left 9; up 3 I think the answer is right 9;up 3
*Wednesday, April 1, 2015 at 12:07pm*

**math**

Solve for x and y simultaneously x+y=2 and 3x^2+4xy+y^2=6
*Wednesday, April 1, 2015 at 11:14am*

**Math**

The point C(3, -1)is translated to the left 4 units and up 1 unit. How do I write a rule to describe the translation?
*Wednesday, April 1, 2015 at 9:11am*

**MATH**

AB and CD are two chords equidistant from the center O. OP is the perpendicular drawn from center O to AB. if CD=6 cm. find PB.
*Wednesday, April 1, 2015 at 3:33am*

**MATH**

Find whether line represent by y=3 passes though oringin or not.
*Wednesday, April 1, 2015 at 3:32am*

**MATH**

The force applied on a body of mass 5 kg is drirectiy proportion to the acceleration produce in the body. Represent this situation as a linear equation in two variable.
*Wednesday, April 1, 2015 at 3:32am*

**MATH**

In the figure, ABCD is a parallelogram whose diagonals AC and BD meet at the point O. L and M are points on AC such that AL=CM. show that BMDL is a parallelogram.
*Wednesday, April 1, 2015 at 3:31am*

**MATH**

If the total surface area of a sphere is 5544 cm 2, find the diameter of the sphere.
*Wednesday, April 1, 2015 at 3:31am*

**MATH**

At what point, the graph of 3x -4y =12 intersects X axis and Y axis. Also find the coordinates of the point on the line when x =2 and x=6.
*Wednesday, April 1, 2015 at 3:31am*

**MATH**

Write the equation Y=7 in the form ax+by+c = 0 and find the coordinates of the point where its graph cuts Y axis . Also find another solution of the given equation.
*Wednesday, April 1, 2015 at 3:30am*

**MATH**

In the figure, ABCD is a parallelogram whose diagonal AC and BD meet at point O.L and M are points on AC such that AL=CM.show that BMDL is a parallelogram.
*Wednesday, April 1, 2015 at 3:30am*

**MATH**

In the given figure, O is the center of the circle and <AOB=degree find the value of XYZ.
*Wednesday, April 1, 2015 at 3:29am*

**MATH**

In <ABC, <A=60,<B=70,<C=50. Points D , E ,F are the mid-points of the sides BC ,AC and AB respectively. Find the measures of the angles of the triangle formed by joining the mid-points of the sides of <ABC.
*Wednesday, April 1, 2015 at 3:25am*

**MATH**

P and Q are points on side BC of <ABC such that P and Q trisect BC. Show that ar(<PQA) = ar(<PAB) = ar(<AQC).
*Wednesday, April 1, 2015 at 3:24am*

**MATH**

Fixed charge in a taxi is x and charges per km is y. if fare for 10 km is 70, then write the given data in form of a linear equation in two variables. Also,represent it graphically. What will be fixed charges, if charges per km are 5 rupee.
*Wednesday, April 1, 2015 at 3:23am*

**MATH**

Write the equations of the lines drawn in the following graph. Also, find the area enclosed between them.
*Wednesday, April 1, 2015 at 3:23am*

**MATH**

PQRS is a parallelogram. points A and B trisect the base P. Prove that ar(<ASB) = ar (<ARB) = 1/6ar (||gm PQRS).
*Wednesday, April 1, 2015 at 3:22am*

**MATH**

In the given figure , AC and BD are chords of a circle that bisect each others at O prove that: (i) AC and BD are diameters. (ii) ABCD is a rectangle.
*Wednesday, April 1, 2015 at 3:22am*

**math**

Construct a triangle QST, if the perimeter is 9.7cm, <S = 60 , <T= 50
*Wednesday, April 1, 2015 at 3:21am*

**MATH**

In a triangle ABC,medians BE and CD are produced respectively to points X and Y such that CD = DX and BE = EY as shown in the figure. show that points X,A &Y are col linear. Also,show that A is the mid point of XY.
*Wednesday, April 1, 2015 at 3:07am*

**MATH**

A dome of a building where people live is in the shape of a hemisphere of radius 7m. 11 children decided to help the old aged people by collecting money for white washing the dome. If white washing costs rupees 2 per meter,how much would each children pay? Also find volume of ...
*Wednesday, April 1, 2015 at 3:07am*

**MATH**

.The volume of a right circular cone is 100 pi cm 3 and its heightis 12cm find its slant height and hence its curved surface area.
*Wednesday, April 1, 2015 at 3:02am*

**MATH**

A cardboard sheet is of rectanguler shape with dimensions 48m x 36m. From each of its corners,a square is cut off so as to make an open box. if the side of the square of the square is 8m, find the volume and lateral surface area of the box.
*Wednesday, April 1, 2015 at 3:00am*

**Math**

Find all the possible values of the expression. sin^-1 -(square root3/2) Ans: 4π/3 + (2π)n 5π/3 + (2π)n
*Wednesday, April 1, 2015 at 1:04am*

**Math**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
*Wednesday, April 1, 2015 at 12:49am*

**easy math**

√(100 - 20√5 + 5 + 15 - 6√15 + 9) solve.
*Tuesday, March 31, 2015 at 11:58pm*

**math**

I can't figure this one. At a math contest,12 problems were given. Five points were awarded for each correct answer,and two points were deducted for each incorrect answer. Matt's score was 39.How many correct answers did he have.5-2(12-5)=39,5-24+2=39,7=63,9
*Tuesday, March 31, 2015 at 11:57pm*

**Math**

I dont understand how to do this problem if someone can please help me to figure it out thank you. A survey about the student government program at a school finds that of 245 students: -218 students like the program -27 students think the program is uncessary If a circle graph...
*Tuesday, March 31, 2015 at 11:14pm*

**Math**

Which of the following types of information is NOT suited for display on a scatter plot? A. Relationship between age and number of books read in a year. B. Relationship between height and shoe size. C. Relationship between calories sonsumed and body weight. D. Relationship ...
*Tuesday, March 31, 2015 at 11:05pm*

**Math**

What percentage of the students who chose biking were girls? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 37.5% C. 40% D. none of these Is the answer D? Thank you
*Tuesday, March 31, 2015 at 10:47pm*

**Math**

Find the value of the following matrix's. 1.) [-5 2 -8 -7] 2.) [3 -4 7 9]
*Tuesday, March 31, 2015 at 10:38pm*

**Math**

What percentage of the boys chose walking? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 45% C. 25% D. None of these Is the answer A? Thank you
*Tuesday, March 31, 2015 at 10:20pm*

**math**

What is 5/9, 15/16, 1/4, and 9/10 put in order from smallest to largest?
*Tuesday, March 31, 2015 at 10:12pm*

**Math**

What percentage of the total students chose skateboarding? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you
*Tuesday, March 31, 2015 at 10:12pm*

**Math **

In a recent student government election , the ratio of students who voted for the winner to all the students who voted was 0.84. The number of students who voted was 75. How many votes did the winner get ?
*Tuesday, March 31, 2015 at 9:45pm*

**math**

Pre algebra what should you do if you cant sleep
*Tuesday, March 31, 2015 at 9:14pm*

**math**

I need a formula. At a math contest,12 problems were given. Five points were awarded for each correct answer, and two points were deducted for each incorrect answer. Matt's score was 39. How many correct answer did he have
*Tuesday, March 31, 2015 at 9:14pm*

**math**

The distance to the nearest 100,000 km from the earth to the moon is given as 400,000 km. The average speed to the Nearest 500km/h is 3500km/h. Calculate the least and greatest time it takes the rocket to reach the moon I figured out the formula speed = distance / time but ...
*Tuesday, March 31, 2015 at 8:52pm*

**MATH**

How could you find out which weighs more, one ton of pillows or one ton of bowling balls?
*Tuesday, March 31, 2015 at 8:16pm*

**Math**

Sarah is lining a square tray with 1 inch square tiles. The side length of the tray is 9 inches. How many tiles does Sarah need?
*Tuesday, March 31, 2015 at 8:10pm*

**MATH**

David took a survey of 12 people to find out what their favorite animal is. Of those, ⅓ of the people said they liked dogs best. How can you find out him many people liked dogs best?
*Tuesday, March 31, 2015 at 8:08pm*

**MATH**

I'm sure what if this is the right answer that the question is looking for. since my eng. not that good i have hard time understanding. Please help me. Question: write a situation that can be modeled by the following linear system. Explain what each variable means, then ...
*Tuesday, March 31, 2015 at 7:59pm*

**Math**

Between 6 A.M and 10 A.M the temperature rose by 5F. Between 10 A.M and 2 P.M the temperature rose by 6F. Between 2 P.M and 6 P.M the temperature rose by 0C. Would you be able to tell how much the temperature rose since 6 A.M? Why or why not?
*Tuesday, March 31, 2015 at 7:57pm*

**Math**

A bathroom has a length of 10 feet and a width of 9 feet.Kade wants to put down tiles on the floor that are each 1 square foot.Then he will put a baseboard along the edges where the walls meet the floor.How many tiles does Kade need?How much baseboard does he need?
*Tuesday, March 31, 2015 at 7:44pm*

**math - linear equation**

How do I write a system of equations that is linear and graph? Thanks
*Tuesday, March 31, 2015 at 6:19pm*

**Math**

Lamar wants to slice a 35-ounce tomato and a 28-ounce tomato into pieces of the same weight. He finds the greatest common factor of the tomato weights to determine the weight of each piece. What is the greatest common factor of 35 and 28? Show your work. Use your answer to ...
*Tuesday, March 31, 2015 at 6:14pm*

**Math**

if a recipe of 2 dozen cookies calls for 3 teaspoons of vanilla how much vanillia will i need for 50 cookies ? 7.3 1.5 teaspoon vanilla= one dozen x 4 dozens = 2.00 missing cookies. 12.5 x 4 = 50 .5x4= 2.00 divided by 1.5 = 1.3 +6 (2servings of 3 teaspoons) equals 7.3
*Tuesday, March 31, 2015 at 6:09pm*

**math help**

how do i solve for x and y x+y=2 and 3x^2+4xy+y^2=6
*Tuesday, March 31, 2015 at 5:18pm*

**Math**

Can mean be found from a histogram? Explain
*Tuesday, March 31, 2015 at 4:59pm*

**Math**

4. Which explains why the sequence 81, 3, 1/9,... is arithmetic or geometric? A)The sequence is arithmetic because it decreases by a factor of 1/27 B)The sequence is geometric because it decreases by a factor of 1/27 C)The sequence is arithmetic because it decreases by a ...
*Tuesday, March 31, 2015 at 4:21pm*

**Math**

When interest is compounded once a year, the formula for compound interest is A=P(1+r)t in the formula, A represents the amount of money after t years, p represents the principal, and interest rate written as a decimal. If p=$500 r=3% and t=2 What is the amount of compound ...
*Tuesday, March 31, 2015 at 4:02pm*

**math**

Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long.
*Tuesday, March 31, 2015 at 3:59pm*

**Math**

1. Write a rule for the sequence. 8, -1, -10, -19 A) Start with 8 and add -9 repeatedly. B) Start with -9 and add 8 repeatedly. C) Start with 8 and add 9 repeatedly. D) Start with 8 and subtract -9 repeatedly.
*Tuesday, March 31, 2015 at 3:58pm*

**math**

Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long.
*Tuesday, March 31, 2015 at 3:56pm*

**Math**

Nina wants to buy a bicycle that costs $150.00. She had saved 6% of the total cost of the bike. How much money has Nina saved? How much does Nina have left to save before she can buy her bike?
*Tuesday, March 31, 2015 at 3:49pm*

**math**

equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
*Tuesday, March 31, 2015 at 3:38pm*

**math**

Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
*Tuesday, March 31, 2015 at 3:33pm*

**math**

Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
*Tuesday, March 31, 2015 at 3:16pm*

**Math **

2. Given the data 12,39,21,18,24,17,12,25 a what is the outlier in the data? b what is the mean with the outlier? c what is the mean without the outlier A. 12;21;18.4 *** B. 12; 18.4; 21 C. 39; 21; 18.4 D. 39; 18.4; 21
*Tuesday, March 31, 2015 at 2:34pm*

**BUS math **

Bari Jay a gown manufacturer received an order for 600 prom dresses from China. Her cost is $35 a gown. If her markup based on selling price is 79%, what is the selling price of each gown? Round to the nearest cent.
*Tuesday, March 31, 2015 at 2:03pm*

**Math**

1. What are the mean, median, mode, and range of the data set given the altitude of lakes in feet: -11, -28, -17, -25, -28, -39, -6, and -46? A. Mean = -25, Median = - 26.5, Mode = -28, Range = 40*** B. mean = -25; median = -40; mode = -26.5; range = 28 C. mean = -26.5; median...
*Tuesday, March 31, 2015 at 1:51pm*

**business math**

Anny invests $8,500, at 6% interest, compounded quarterly for 12 years?
*Tuesday, March 31, 2015 at 1:03pm*

**math**

given that the rectangle above has a perimeter of 34 units, find m<klj. round the answer to the nearest hundredth
*Tuesday, March 31, 2015 at 12:58pm*

**Math**

Juanita invests $3,500, at 8% interest, compounded annually for 4 years?
*Tuesday, March 31, 2015 at 12:36pm*

**MATH**

716-{(1950/5 of 3)-(4+217/7)}
*Tuesday, March 31, 2015 at 10:42am*

**math help**

How do i solve for x (x^2-9)(2x+1)=0
*Tuesday, March 31, 2015 at 9:42am*

**math help**

how do prove that this equation has rational roots for all rational values of K 3x^2+kx-k=3x
*Tuesday, March 31, 2015 at 9:39am*

**Math**

Point M(4, 3) is translated according to the rule (x, y) (x+2,y-5). What are the coordinates of of M?
*Tuesday, March 31, 2015 at 8:46am*

**Math, statistics**

Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) = {1/3,0,if −2<x≤1,otherwise, we ...
*Tuesday, March 31, 2015 at 8:34am*

**7th grade math (probability)- additional questions**

Here are additional problems that weren't included in original post from 3/30. 4. There are 5 different color jolly ranchers in a bag - 10 cherry, 15 watermelon, 12 grape, 10 apple, and 8 raspberry. What is probability that you'll choose raspberry? Ans: 8/55 =.1454 = ...
*Tuesday, March 31, 2015 at 7:25am*

**Math**

Given an iterated map, ie. x_n+1 = 3* x_n / (x_n +1), how do we find all of its fixed points?
*Tuesday, March 31, 2015 at 2:35am*

**math**

square root of (24)(72)
*Monday, March 30, 2015 at 11:27pm*