Wednesday

April 1, 2015

April 1, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math **

Point X is on side of line AC of triangle ABC such that <AXB = <ABX, and <ABC - <ACB = 39 degrees. Find <XBC in degrees.?
*Saturday, March 21, 2015 at 7:40pm*

**Math**

1. Rishi ram obtained an installment loan for $3,000.00. He agreed to repay the loan in 6 monthly payments. His monthly payments is $516.50. What is the APR? MY ANSWER=0.33% 2. Tim Newman took out a simple interest loan of $1500 at a 10 percent interest for 12 months. After 4 ...
*Saturday, March 21, 2015 at 7:36pm*

**math**

A box contained some red, blue, and green markers. For every 5 red markers, there were 2 blue markers. For every 3 blue markers, there were 5 green markers. a.Find the ratio of red markers to blue markers to green markers. b.When 6 red markers were removed...
*Saturday, March 21, 2015 at 7:31pm*

**math**

There are 32 more apples than oranges in a box. 3/5 of the oranges and 1/3 of the apples are overripe. If the number of overripe apples and the number of overripe oranges are the same, how many pieces of overripe fruit are there?
*Saturday, March 21, 2015 at 7:30pm*

**Math help check **

Which polynomial does the model represent? The model shows 1 black square block, 2 white thin blocks, 1 black thin block, 1 white small square block, 3 black small blocks. a –x³ + 2x² – 3x + 2 b. x² + x – 2 c. –x² – x + 2 d. –x...
*Saturday, March 21, 2015 at 6:26pm*

**Math check **

1.(2x)(10x) A)20x* B)12x C)20x^2 D)5x 2.-3m(m + 8) A)-3m^2 + 24 B)-3m^2 - 24m C)-24m D)-4m + 5* 3. 4d(2d-9) A)8d - 36d* B)-d C)-28d^2 D)8d^2 - 36d 4. (3x + 4)(x-2) A)3x^2 - 2x - 8 B)x - 8 C)3x - 2x - 8* D)3x^2 + 2x + 8 5. (2y - 1)(4y - 3) A)-2y + 3* B)8y^2 - 10y - 3 C)8y^2 - ...
*Saturday, March 21, 2015 at 5:41pm*

**Math**

1. Michael Koepler received his bank statement and canceled checks for October. His previous balance was $998.41. In October, he deposited $177.00 and wrote checks totaling $378.00. What was the ending balance for that month? MY ANSWER- I am unsure if the answer is $797.41 or...
*Saturday, March 21, 2015 at 5:08pm*

**math**

What would be the final cost of a theater ticket that cost $6.00 and a discount rate of 15 percent was added to it?
*Saturday, March 21, 2015 at 3:26pm*

**Math**

Amanda Sabino's taxable income is $20,900.00. How much will she pay in state tax? Tax Table- First $2,000: 2.0% rate Next $4,000: 3.0% rate Next $4,000: 4.5% rate Over $10,000: 6.0% rate My answer-$1254 Am I correct? Thank you!!
*Saturday, March 21, 2015 at 2:45pm*

**Math**

Hello I need some help with these questions. A survey of 115 children found that 39 liked The Little Mermaid 43 liked 101 Dalmatians 56 liked Mickey Mouse 7 liked The Little Mermaid and 101 Dalmatians 10 liked The Little Mermaid and Mickey Mouse 16 liked 101 Dalmatians and ...
*Saturday, March 21, 2015 at 2:41pm*

**Math**

A document that measures 28 centimeters by 20 centimeters is enlarged by a scale factor of 3/2. What are the dimensions of the enlarged documents?
*Saturday, March 21, 2015 at 2:32pm*

**math**

adult tickets are $17, student tickets are $9. how many adult and student tickets need to be sold to make a profit of $4,400?
*Saturday, March 21, 2015 at 1:53pm*

**Math**

Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y < 6 x > 0 ...
*Saturday, March 21, 2015 at 12:40pm*

**math **

Solve the initial value problem d^2x/dt^2+2dx/dt-3x = 0, x(2π) =1, x(2π) = 13
*Saturday, March 21, 2015 at 12:35pm*

**math **

Rectangle WXYZ is drawn on triangle ABC, such that point W lies on segment AB, point X lies on segment AC, and points Y and Z lies on segment BC, as shown. If <BWZ=26 degrees and <CXY=64 degrees, what is<BAC, in degrees?
*Saturday, March 21, 2015 at 12:24pm*

**math**

ABC is an isosceles triangle inscribed in a circle. If AB and AC equal to 2.5cm and BC is 14cm find the radius of the circle
*Saturday, March 21, 2015 at 11:54am*

**math**

Assume that on a weekday one telephone number out of every ten being called is busy. If 6 randomly selected numbers are called what is the probability that at least three of them be busy?
*Saturday, March 21, 2015 at 11:50am*

**math**

If a power failures occur according to a poisson distribution with an average of 3 failures every twenty weeks,calculate the probability that there will not be more than one failure during a particular week.
*Saturday, March 21, 2015 at 9:40am*

**Math, Intergration**

C(T)=0.78125-0.5e^(-0.64T) (T+1.5625) Using this equation, I don't understand 'Intergration by parts' to show this and what it means Any help is appreciated!
*Saturday, March 21, 2015 at 9:26am*

**Math**

Hi I'm having a bit of trouble if anyone is able to help, thanks! Using the substitution u =1-2t^2, show that A = -1/4 ∫_1^(-7)▒e^u du
*Saturday, March 21, 2015 at 7:33am*

**math**

Calculate the mean value for the number of heads appearing in a simultaneous throw of 3 coins.
*Saturday, March 21, 2015 at 7:04am*

**math**

The arrow is spun several times until it stops at a number 4. Find the probability that this happens on the third spin.
*Saturday, March 21, 2015 at 6:54am*

**math - URGENT**

I'm don't understanding how to solve this question: The graph of a line passes through the x-intercept of y-20=2/11(x-31) and is perpendicular to the line y=1/7x+7 . The equation of the line, written in Slope-Point form, is y-p = m(x-q). what is the value of m*q ?
*Saturday, March 21, 2015 at 2:43am*

**MATH!!!**

What is the equation for the line that passes through W(-10,-9) and is parallel to y=5/32x-10 ? Thank you....
*Saturday, March 21, 2015 at 2:34am*

**math -ans check**

two points on the graph of a linear function are (-3,5) and (-1,4). Determine the equation of the function in slop-point form. ans: m=-1/2 I pick a point (-1,4) y-y1=m(x-x1) y-4=-1/2(x-(-1)) y-4=-1/2(x+1) Thank you ^^
*Saturday, March 21, 2015 at 1:35am*

**math _ HELP !!**

two points on the graph of a linear functions are (-3,5) and (-1,4). Determine the equation of the function in slope form ? can someone help explain in step ? Thanks
*Saturday, March 21, 2015 at 12:15am*

**Math**

Skate boarding boys= 2 girls=1 What percentage of the total students chose skateboarding? A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you
*Saturday, March 21, 2015 at 12:01am*

**Math**

a horse race has 14 entries and one person owns 3 of those horses. assuming that there are no ties, what is the probability that those three horses finish first, second and third?
*Friday, March 20, 2015 at 11:36pm*

**math**

if I bought 3 items at 24.95 and 2 items at 45 and they were all 30% off, If I had bought these 5 items without the 30$ off what would I have paid
*Friday, March 20, 2015 at 10:55pm*

**math**

There are 32 more apples than oranges in a box. 35 of the oranges and 13 of the apples are overripe. If the number of overripe apples and the number of overripe oranges are the same, how many pieces of overripe fruit are there?
*Friday, March 20, 2015 at 9:21pm*

**math**

A box contained some red, blue, and green markers. For every 5 red markers, there were 2 blue markers. For every 3 blue markers, there were 5 green markers. a.Find the ratio of red markers to blue markers to green markers. b.When 6 red markers were removed...
*Friday, March 20, 2015 at 9:20pm*

**Math**

There are red and blue marbles in a jar. There are 2 more red marbles than blue. There are 8 marbles in all. How many red marbles? How many blue marbles?
*Friday, March 20, 2015 at 9:03pm*

**math**

Silvia has twice as much money invested at 5% simple interest as she does at 4%. If her yearly income from the two investments is $266, how much does she has at each rate? 4% = 5% =
*Friday, March 20, 2015 at 7:25pm*

**College Math**

An open-topped rectangular box is to be constructed from a 24 inch by 36 inch piece of cardboard by cutting out squares of equal sides from the corners and then folding up the sides. What size squares should be cut out of each of the corners in order to maximize the volume of ...
*Friday, March 20, 2015 at 6:07pm*

**math**

A store mixes peanuts worth $10 per pound and biscuit worth $13 per pound. The mixture is to sell for $12 per pound. Find how much of each should be used to make a 432 pound mixture.
*Friday, March 20, 2015 at 4:27pm*

**math**

Mary and John are 128 miles apart. A car leaves Mary traveling towards John and another car leaves John at the same time traveling towards Mary. The car leaving Mary averages 10 miles per hour more than the other car and they meet after 1 hour and 36 minutes. What are the ...
*Friday, March 20, 2015 at 4:22pm*

**math**

Seven people rowed 12 miles downstream with the current in 1.5hrs. Coming back upstream against the current covered the same distance but took 4 hours. Find the people rowing rate in the still water and the rate of the current
*Friday, March 20, 2015 at 4:16pm*

**math**

Beans meal is 16% protein flour meal is 8% protein. How many pounds of each should be mixed together to get 32 pounds mixture that is 13% protein how many pounds of the flour meal should be in the mixture
*Friday, March 20, 2015 at 4:12pm*

**math**

June has twice as much money invested at 5% simple annual interest as she does at 4 %. If her year income from the two investment is $315 how much does she have at each rate?
*Friday, March 20, 2015 at 4:05pm*

**math**

Mr Jacob has twice as much money invested at 5% simple annual interest as he does at 4%. If his yearly income from the two investment is $126, how much does he has at each rate?
*Friday, March 20, 2015 at 3:24pm*

**math**

A conducting rod of mass 30 g and length 48 cm has holes drilled near each end so that it is free to slide in a vertical direction along two conducting rails as shown in the figure below. A current of 240 A is made to flow through an identical rod at the bottom of the assembly...
*Friday, March 20, 2015 at 2:19pm*

**math**

My car gets 26 miles per gallon, I have to drive 36 miles, gas price is $3.10 per gallon. How much money will I need?
*Friday, March 20, 2015 at 1:31pm*

**math**

Trent wants to build a rectangular pen for his animals. One side of the pen will be against the barn; the other three sides will be enclosed with wire fencing. If Trent has 400 feet of fencing, what dimensions would maximize the area of the pen?
*Friday, March 20, 2015 at 12:06pm*

**Math**

Connie made deposits of $2000 at the beginning of each year for four years. The rate she earned is 5% annually. What is the value of Connie's account in four years?
*Friday, March 20, 2015 at 10:51am*

**Tsi math**

A rectangular room measures 20 by 7 feet Find the cost of installing a strip of wallpaper around the room if the wallpaper costs $0.98
*Friday, March 20, 2015 at 9:42am*

**math**

3/5 of the people at a funfair were children. 3/4 of the remaining people were men. There were 140 more children than women. How many people went to the funfair?
*Friday, March 20, 2015 at 9:26am*

**math**

Sam had 80 foreign stamps and local stamps. After giving away13of his foreign stamps and 10 local stamps, he had an equal number of foreign stamps and local stamps left. How many local stamps did he have in the beginning?
*Friday, March 20, 2015 at 9:25am*

**math**

Solve the following ordinary differential equations. I) (2y+x^2+1)dy/dx+2xy-9x^2=0 ii) d^2/dx^2+3day/DX+2y=x^2
*Friday, March 20, 2015 at 5:12am*

**math**

An object of mass 100g is thrown vertically upward from a point 60cm above the earths surface with an initial velocity of 150cm/sec. It rises briefly and then falls vertically to the earth, all of which time it is acted on by air resistance that is numerically equal to 200v (...
*Friday, March 20, 2015 at 2:23am*

**Math**

1. A carton contains b boxes of paper plates, and each box contains n plates. If the carton costs c dollars, what is the cost per paper plate, in dollars, when the plates are bought by the carton? a. cbn b. c/bn c. bn/c d. cn/b e. n/cb I do not know which. I got something like...
*Friday, March 20, 2015 at 2:07am*

**math**

building A is 180 feet shorter than building B. The total height of the two building is1480 feet. find the length of each building
*Friday, March 20, 2015 at 1:51am*

**math 5th grade**

A snail is crawling up the side of a wall that is 3 meters high. Each day, he crawls up 40cm. The first night, he slips back down 2cm; the second night he slips down 4cm; the third night he slips down 6cm; and so on at the same rate.(He was getting more tired each night!) How ...
*Friday, March 20, 2015 at 1:00am*

**math **

Point X is on side AC of triangle ABC such that <AXB =<ABX, and <ABC - <ACB = 39 degrees. Find <XBC in degrees.
*Thursday, March 19, 2015 at 10:53pm*

**math(Discrete)**

Give the negation of the statement ∃! x ∈ U [P (x)].
*Thursday, March 19, 2015 at 10:51pm*

**math **

Point X is on side AC of triangle ABC such that <AXB =<ABX, and <ABC - <ACB = 39 degrees. Find <XBC in degrees.
*Thursday, March 19, 2015 at 10:46pm*

**math **

This can be proven by using congruent triangles. Because ACX=YCB are two adjacent angles, one angle is <ACB and the other being an angle that forms an equilateral triangle (which is 60 degrees), it means that ACX=<YCB=<ACB+60. Now we can see that AC=YC, and CX=CB, ...
*Thursday, March 19, 2015 at 10:31pm*

**math(Discrete)**

Determine whether the statement ∀x ∈ Z, ∃y, z ∈ Z[x = 5y + 7z] is true or false. Explain.
*Thursday, March 19, 2015 at 9:54pm*

**Math Help Please!!!**

Use the function rule to complete the table Table= x= -2, -1, 0, 1, 2 y= (figure out y) Function rule= -10x+y=4
*Thursday, March 19, 2015 at 9:42pm*

**math**

Travel 35mph,to reach spot 27 miles away, traveling 2/3 of hour will I reach spot? How long will it take to reach spot?
*Thursday, March 19, 2015 at 9:26pm*

**Math**

A rectangular garden dimensions 30m by 20m and is divided into 4 parts by two pathways that run perpendicular from its side. One pathways has a width 8dm and 7dm. What is the total useble area of the garden?
*Thursday, March 19, 2015 at 7:55pm*

**Math**

A taxi ride costs $3 plus $2.50 per mile. Write the equation.
*Thursday, March 19, 2015 at 7:43pm*

**math**

on a weekend road trip the jensen family drove 210 miles on highways, where their car gets 35 miles for each gallon of gas and 54 miles on city streets where their car gets 18 miles for each gallon. How many gallons of gas did they use?
*Thursday, March 19, 2015 at 7:04pm*

**math**

The sum of two consecutive integers is –49. Write an equation that models this situation and find the values of the two integers.
*Thursday, March 19, 2015 at 7:03pm*

**Delete Question**

Is it possible to have this question deleted since I figured out how to do it? Thanks! Subject: Math Date: Thursday, March 19, 2015 Time: 3:13 PM
*Thursday, March 19, 2015 at 6:49pm*

**Math**

Determine whether the statement ∀x ∈ Z, ∃y, z ∈ Z[x = 5y + 7z] is true or false. Explain.
*Thursday, March 19, 2015 at 6:39pm*

**Math**

Give the negation of the statement ∃! x ∈ U [P (x)].
*Thursday, March 19, 2015 at 6:34pm*

**Math**

Zain goes swimming. He swims the first length of the pool in 2.5 minutes. The time he takes to swim each length is 10 seconds more than he took to swim the previous length. A. Find the time Zain takes to swim the fifth length. B. Find the time taken for Zain to swim a total of...
*Thursday, March 19, 2015 at 6:28pm*

**Math**

A photo is 6 in wide and 3 in tall. If it is reduced to a height of 1 in, how wide will it be?
*Thursday, March 19, 2015 at 6:27pm*

**Math**

A photo is 6 in wide and 3 in tall. If it is reduced to a height of 1 in, then how wide will it be?
*Thursday, March 19, 2015 at 6:20pm*

**Math**

A ball is dropped vertically. It reaches a height of 1.6m on the first bounce. The height of each subsequent bounce is 80% of the previous bounce. A. Find the height the ball reaches on the 6th bounce. B. Find the sum of the first seven terms of this sequence.
*Thursday, March 19, 2015 at 6:14pm*

**Math**

the back-to-back stem-and-leaf plot below shows the ages of patients seen by two doctors in a family clinic one day. what is the difference between the age of the oldest patient seen by doctor 1 and the age of the oldest patient seen by doctor 2. AGE OF DOCTORS PATIENTS Doctor...
*Thursday, March 19, 2015 at 6:10pm*

**math**

1/4 of the plants are pepper, 1/3 of the peppers are yellow peppers what fraction of the plants are yellow peppers?
*Thursday, March 19, 2015 at 6:03pm*

**Math**

A ball is placed on a long inclined ramp. It rolls down the ramp as shown in the diagram. The equation d = 23 · t2 represents the distance in feet, d, the ball travels in t seconds. Part A How far does the ball travel in 5 seconds? Show your work. Part B How many ...
*Thursday, March 19, 2015 at 5:58pm*

**math**

two small pizzas are shared by three people how much pizza does each person get
*Thursday, March 19, 2015 at 5:23pm*

**Math**

The equation d = 23 · t2 represents the distance in feet, d, the ball travels in t seconds. Part A How far does the ball travel in 5 seconds?200 feet in 5 seconds. Show your work. Part B How many seconds would it take for the ball to travel 25 feet? Show your work. Part...
*Thursday, March 19, 2015 at 5:22pm*

**Math**

A retangular prism has a volume of 7,168 cm^3. It's base has an area of 512 cm^2. what is it's height?
*Thursday, March 19, 2015 at 4:37pm*

**Math**

Could 7 be part of the solution set for the inequity? 5x > 40? Explain your reasoning
*Thursday, March 19, 2015 at 4:01pm*

**Math check please**

1. Solve the system of equations y=2x^2-3 y=3x-1 a)no solution b)(-1/2,5),(2,-5/2) c)(-1/2,-5/2),(2,5)**** d)(1/2,5/2),(2,5) 2. How many real number solutions are there to the equation 0=-3x^2+x-4? a)0 ***** b)1 c)2 d)3 3.solve the equation by completing the square. if ...
*Thursday, March 19, 2015 at 3:58pm*

**Math**

The quantity Q of radioactive carbon remaining in a 300 - gram wood sample at time t is given by the expression Q(t) = 300 e^{- 0.000324*t}. How much radioactive carbon remains in the sample after (a) 200 years, (b) 50000 years, (c) 125500 years?
*Thursday, March 19, 2015 at 3:43pm*

**Math**

Hi! I really need help with these two practice problems. If someone could show me how to do both, that would great. Directions: Decide whether the statements are true or false by using partial fraction decomposition. If it is false, show the correct way to decompose the ...
*Thursday, March 19, 2015 at 3:13pm*

**Math**

If 50 books is $86.45 for each Books and 150 books is $80.95 for each book what is the cost for 60 books?
*Thursday, March 19, 2015 at 3:06pm*

**math**

Suppose a 25-foot ladder is leaning against a wall making a 63 degree angle with the wall. How high up th wall is the end of the ladder?
*Thursday, March 19, 2015 at 3:00pm*

**math**

A diamond is purchased for $3500. Its value increases 4% each year. Find the value of the diamond at the end of the sixth year of ownership.
*Thursday, March 19, 2015 at 2:26pm*

**Math **

An atom of gold has a mass of approximately 3.25 times 10^-22 grams. What is the mass of 3000 atoms of gold?
*Thursday, March 19, 2015 at 2:04pm*

**Math**

38 ounces=____lb ____oz
*Thursday, March 19, 2015 at 1:47pm*

**Math**

Ron wants to buy a used car and needs to have a down payment of 25%. If the car Ron wants to buy costs $5,100, how much down payment will he need?
*Thursday, March 19, 2015 at 1:47pm*

**MATH SUPER HELP!**

I have 2 questions which measure correctly completes the statement. 1,127.5 milligrams = ? grams (1 point) which measure correctly completes the statement 627.532 L= / ml a sunflower was 1.8 meters high one week ago. in 7 days it grew 12 centimeters. find the current height of...
*Thursday, March 19, 2015 at 1:42pm*

**Math i need someone awesome to help! ASAP**

I have 2 questions which measure correctly completes the statement. 1,127.5 milligrams = ? grams (1 point) which measure correctly completes the statement 627.532 L= / ml a sunflower was 1.8 meters high one week ago. in 7 days it grew 12 centimeters. find the current height of...
*Thursday, March 19, 2015 at 1:29pm*

**Math**

Which associations best describe the data in the table? Variable m 9 6 5 1 3 4 2 8 7 Variable n 33 24 18 3 10 14 7 32 26 Choose exactly two answers that are correct. A. linear association B. negative association C. nonlinear association D. positive association
*Thursday, March 19, 2015 at 12:01pm*

**Math**

If I have test scores of 82, 89, & 77% what is my aveage?
*Thursday, March 19, 2015 at 10:28am*

**math**

You want to make a graph to show how you spend your time each day. What would be the best graph for this data? A. Circle graph B. Line graph C. Histogram D. Stem_and leaf plot Is the answer A? Thank you
*Thursday, March 19, 2015 at 9:03am*

**math help please**

Which of the following types of information is suited for display on a scatter plot? A. Relationship between favorite color and age. B. Relationship between number of pets and favorite TV show C. Relationship between hours of exercise and number of siblings. D. Relationship ...
*Thursday, March 19, 2015 at 8:58am*

**math help please**

What type or graph does not show the number of times a response was given? A. Box_and _whisker plot B. Line plot C. Stem and leaf plot D. Bar graph Is the answer A?
*Thursday, March 19, 2015 at 8:41am*

**Math Help**

Directions: Decide whether the statements are true or false by using partial fraction decomposition. If the statement is false, show the correct way to decompose the partial fraction. 3/x^2+x-2=-1/x+2+1/x-1
*Thursday, March 19, 2015 at 8:12am*

**Math**

Solve the following system of equations. Then, write the final answer in (x, y, z) form. -12x+y-x=-20 -2x-4y+2z=10 x+2y+2z=25
*Thursday, March 19, 2015 at 8:09am*

**math**

For more than 4000 years the Great Pyramid of Giza stood as the tallest structure in the world. After it was completed, the pyramid stood an amazing 481 feet high. Y 9 th. grade math Semester Project: The Great Pyramid of Giza
*Thursday, March 19, 2015 at 7:46am*

**Math**

On Monday at noon, the temperature was 23oF. By 9 pm it was -4oF. On Tuesday at noon, it was 18oF. By 9 pm it was -11oF. On which day did the greater temp. change occur?
*Thursday, March 19, 2015 at 6:51am*

**Math**

Solve the following equations 7f+f^2=60 6x^2-x-15=0 6(y-3)^2-(y-3)-15=0
*Thursday, March 19, 2015 at 5:54am*

**math**

20 men can do a piece of work in 24 days. After working for 6 days, additional men are employed to finish the work in 21 days from the beginning. Find the number of additional men
*Thursday, March 19, 2015 at 3:43am*

**math**

32, k 3 , are three consecutive arithmetic terms find k
*Thursday, March 19, 2015 at 3:27am*

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