Wednesday

August 5, 2015

August 5, 2015

**math**

Reza is helping En Shah to make a box without the top.The box is made by cutting away four squares from the corners of a 30cm square piece of cardboard as shown in Figure 1 and bending up the resulting cardboard to form the walls of the box.
*Monday, June 8, 2015 by mt*

**Math**

How would you solve: 5 cos x + 2 = 0 In the domain of 0 degrees to 360 degrees
*Sunday, June 7, 2015 by Paris *

**Math (PLEASE HELP!)**

The temperature of an enclosure for a pet snake should be about 27°C, give or take 3°C. (show your work) a) What absolute value expression can be used to represent this situation? b) Use the expression to determine the temperature range the enclosure should have.
*Sunday, June 7, 2015 by Brandon*

**math **

Find an equation to describe the following data, (4, 3), (6, $1.50), (8, 6)
*Sunday, June 7, 2015 by Taya*

**math**

Mr Shah has been involved in a sheep farming business for several years and he supplies meats and milk products to the communities. He wishes to build a rectangular sheep pen with two parallel partitions using 200 meters fence. Find the dimensions of the rectangle that will ...
*Sunday, June 7, 2015 by aliazmanz*

**COLLEGE MATH **

a manufacture of brand A jeans has daily production costs of C =0.2x^2 -96x+12,095 where C is the total cost in dollars and x is the number of jeans produced. How many jeans should be produced each day in order to minimize costs? what is the minimum daily cost .
*Sunday, June 7, 2015 by Ann*

**Math**

One cell phone plan costs $15 per month plus $0.10 per minute used. A second cell phone plan costs $50 per month for unlimited use. Write and solve an inequality to find when the second plan is cheaper than the first.
*Sunday, June 7, 2015 by Taya*

**Another math related question**

Two urns both contain green balls and red balls. Urn 1 contains 6 green balls and 4 red balls and urn 2 contains 8 green balls and 7 red balls. A ball is drawn from each urn.What is the probability that both balls are red
*Sunday, June 7, 2015 by Anonymous user*

**Math**

A drawer contains 2 red socks,3 white socks and 2 blue socks. without looking you draw out a sock return it and draw out a second sock.what is the probability that the first sock is blue and the second sock is red
*Sunday, June 7, 2015 by Anonymous user*

**Math **

Solve {x}/{|x|} + {y}/{|y|} + {z}/{|z|} + {xyz}/{|xyz|} = 0.
*Sunday, June 7, 2015 by Math1234*

**Math**

Mr. Powell has 96m of wire. He used all of it to fence a square Garden. What is the length of 1 half of the garden?
*Sunday, June 7, 2015 by Winsome*

**Math**

A firm wants to manufacture an open steel container with a capacity 4l. Determine the dimensions of the container with a square base if they want to use the minimum amount of sheet metal
*Saturday, June 6, 2015 by M Mgaga*

**Math (PLEASE HELP!)**

The temperature of an enclosure for a pet snake should be about 27°C, give or take 3°C. (show your work) a) What absolute value expression can be used to represent this situation? b) Use the expression to determine the temperature range the enclosure should have.
*Saturday, June 6, 2015 by Sasha*

**Math**

Solve for x. Express the answer in simplest form. 1/7 = 3 over 4x - 1 1/7 is a fraction
*Saturday, June 6, 2015 by Jessica*

**Math/Physics**

Given the following vectors, where Vector A is 6.3 meters and Vector B is 3.5 meters, determine the magnitude of the following vector sums: A+B, A-B, B-A I tried to do magnitude such as A+B = square root (6.3)^2+(3.5)^2 = 7.2 then A-B = square root (6.3)^2-(3.5)^2 = 5.2 then ...
*Saturday, June 6, 2015 by John*

**math**

balance on an initial investment of $1,500 over 25 years at 5% APR. After 10 years about how much interest has the investment earned
*Saturday, June 6, 2015 by alex*

**math**

I don't understand this, can you help with the following.... when G(x)=0 then the domain is different. G=0 wouldn't be a real number. example would be f=(G)=x+2 f(F)=2x+3 x=2
*Saturday, June 6, 2015 by anonymous*

**math**

I have been doing pascal triangle and do not know where this question comes from? solve for b (3+b)to the 4th power = 1 do I take 3 to the 4th + b to the 4th =1 and then subtract 81 so that -81 =b to the fourth which = 3
*Saturday, June 6, 2015 by lamar*

**precalculus**

If you are driving down a 10% grade, you will alway be 10% below where you would have been if you could have driven on flat ground from where you started. Suppose you descend to where you are 20 feet below your starting point. What concept does he "grade" relate to ...
*Saturday, June 6, 2015 by Lois*

**Math**

The temperature of an enclosure for a pet snake should be about 27°C, give or take 3°C. (show your work) a) What absolute value expression can be used to represent this situation? b) Use the expression to determine the temperature range the enclosure should have.
*Saturday, June 6, 2015 by Sasha*

**Math**

Alice takes 4 hours to paint a wall. With sam's help, they can paint the wall in 3 hours. Without help, how long would it take Sam to do the same thing?
*Saturday, June 6, 2015 by Sean*

**math**

A can of oil is 8 inches high and 8 inches in diameter. What is the approximate volume of the can?
*Saturday, June 6, 2015 by scott*

**math**

Ariel wants to choose 5 players for her basketball team. There are 7 players to choose from. How many different teams can Ariel make? A) 21 B) 35 C) 42 D) 56 please help me! And show how you got the answer! I thought you were supposed to go 7*6*5*4*3 but that doesnt equal any ...
*Saturday, June 6, 2015 by Anonymous*

**math**

a cylindrical container has a diameter of 14cm and a height of 20cm and is full of water. The water is poured into another cylinder which has a diameter of 20cm. How deep is the water in the second cylinder?
*Saturday, June 6, 2015 by jacob*

**Math**

A spinner has three sections. The table shows the results of spinning the arrow on the spinner 80 times. Section 1 18 Section 2 30 Section 3 32 What is the experimental probability of the arrow stopping over Section 3? A. 1/3 B. 1/32 C. 3/32 D. 2/5
*Saturday, June 6, 2015 by Jessica*

**math**

A circle of radius 2 is externally tangent to a circle of radius 8. Compute the length of their common tangent.
*Saturday, June 6, 2015 by Ryan*

**math**

Solve for all real values of x is 9^x+2=240+9^x THIS ONE IS HARD
*Saturday, June 6, 2015 by Ryan*

**Math**

Joan's stamp collection consists of three books. Two tenths of her stamps are on the first book, several sevenths are in the second, and there are 303 stamps in the third book. How many stamps are there in Joan's collection?
*Saturday, June 6, 2015 by Ryan*

**math**

In triangle ABC, AC=BC. The point D is on BC such that AB=AD=DC. Compute the measure of angle C. I'm not sure how to do this...
*Saturday, June 6, 2015 by Ryan*

**Math**

I'm graphing this periodic function, it has the same min value for each for the two periods, but the max value is different for the two periods. Should I use the higher max value to work out the equation for the function, or should I average them?
*Saturday, June 6, 2015 by Amanda*

**Math**

at what time was the incline at 1.71m, if it is at 1.9m now and at 1.4m one hour ago? (assuming that it declining evenly at the same rate)
*Saturday, June 6, 2015 by Amanda*

**Math**

What is the difference of the arithmetic sequence 7p+2, 5p+12, 2p-1?
*Saturday, June 6, 2015 by Paps olarte*

**math derivatives**

An architect is designing a rectangular building in which the front wall costs twice as much per linear metre as the other 3 walls. The building is to cover 1350 m2. What dimensions must it have so that the costs of the walls is a minimum? write a formula using derivatives
*Saturday, June 6, 2015 by Barry*

**Math**

Find p so that 7p+2, 5p+12, 2p-1 ... form an arithmetic sequence.
*Saturday, June 6, 2015 by Paps olarte*

**Math**

Form an arithmetic sequence by finding p in the numbers 7p+2, 5p+12, 2p-1...
*Saturday, June 6, 2015 by Paps olarte*

** math**

three more than the product of 19 and Victoria's age
*Friday, June 5, 2015 by zhara*

**math**

you can rent a car for the day from company A for $26 plus $0.12 a mile company B charges $24.00 plus $ 0.19 a mile. Find the number of miles m (to the nearest mile) per day for which it is cheaper to rent from company A
*Friday, June 5, 2015 by Jasmine *

**math**

how many lines of symmetry does a hexagon have i think its 8 or 16 i think its 8 @ms.sue
*Friday, June 5, 2015 by anonymous*

**math**

12. Which function is a quadratic function? A. y=3x^2+x B. y=2x-1 C. y=3/x D. y= -|x| Which function rule represents the data in the table? x -3, -2, -1, 0, 1 y 1, -2, -5, -8, -11 A. y=-3x-8 B. y=1/3x -8 C. y=1/3x+8 D. y=3x+8
*Friday, June 5, 2015 by Anonymous *

**Math- algebra **

An experiment stain of bacteria is being used to treat an oil spill. A colony of 2^13 cells will be sufficient to ocean up the spill. If the colony is started with a single cell, and cells increase in number by splitting every 15 minutes, in how many hours will the colony ...
*Friday, June 5, 2015 by Bill*

**Math**

In simplified form, 24x^4z^-2 --------- = ? 8x^-3z A. 3x --- z B. 16x^7 ----- z C. 3x^7 ---- z^3 D. 16xz E. 3x^7z^3
*Friday, June 5, 2015 by Anonymous*

**math**

A ice cream seller sells five flavours of ice creams. How many combinations of 3 scoops of cones are possible. Hint repition of flavours is allowed
*Friday, June 5, 2015 by Anonymous*

**math**

A ice cream seller sells five flavours of ice creams. How many combinations of 3 scoops of cones are possible. Hint repition of flavours is allowed
*Friday, June 5, 2015 by Anonymous*

**Math**

Convert the polar equation to rectangular form: r = -2cosø - 2sinø
*Friday, June 5, 2015 by James*

**math **

Lily uses 1 3/4 meters of ribbon to make a knot. She wants to make 9 similar knots for her cousins. How many meters of ribbon does Lily need ? Round your answer to the nearest meter.
*Friday, June 5, 2015 by anonymous*

**math**

The smith family drinks 1 4/5 liters of apple juice each day. the apple juice comes in a 2 liter bottle. How many bottles does mrs. smith need to buy every week?
*Friday, June 5, 2015 by anonymous*

**Math**

How much larger than the sum of -1, -2, and 5 is the sum of the squares of these same integers? A. 18 B. 20 C. 22 D. 28 E. 32
*Friday, June 5, 2015 by Anonymous*

**Math**

What are the factors of 12c^2 + cd - d^2? F. (4c + 3d) (3c - 2d) G. (4c - 3d) (3c + 2d) H. (6c + d) (2c - 6d) J. 6(2c - d) (c + d) K. 6(2c + d) (c - d)
*Friday, June 5, 2015 by Anonymous*

**Math of class-10**

Show that 4/ root 3 is irrational number
*Friday, June 5, 2015 by Anonymous*

**Math of class-10 **

Show that2/ square root 12 is irrational
*Friday, June 5, 2015 by Anonymous*

**Math of class -10**

Prove that 2/ square root 12is irrational
*Friday, June 5, 2015 by Anonymous*

**Math of class-10**

Prove that 2/ square root 12is irrational
*Friday, June 5, 2015 by Based on 1.3 *

**Math**

A bag contains 3 apples and 2 oranges. Another bag contains 2 apples and 4 oranges . A bag and a fruit are picked at random. The probability that the fruit will be apple is
*Friday, June 5, 2015 by Uroosa*

**Math**

In 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 the points X, A and Y are collinear. Also show that A is the mid point of XY
*Friday, June 5, 2015 by Somanna*

**Math**

How do you do this?: Which ordered pair is on the graph of y= x+ +11
*Thursday, June 4, 2015 by Zoe*

**Math**

How do you subtract a negative number from a positive number?
*Thursday, June 4, 2015 by Zoe*

**Math**

Use sine law to explain why the 2 equal sides of an isoceles triangle must be opposite the two equal angles
*Thursday, June 4, 2015 by Anonymous*

**math**

What is the time when a person is 15 m above the ground? h= 20sin 2pi/40 (t-10) + 21
*Thursday, June 4, 2015 by Kitty*

**Consumer math**

Cathy budgets 23% of her income for housing and 21% of her income for food. If she earns $18,000 per year, how much must she budget monthly for housing and food? a. $792 b. $660 c. $7,920 d. $61.30
*Thursday, June 4, 2015 by Caleb*

**math**

For the given function y=-2cos3(x + 180) - 1. Determine the amplitude, period, phase shift, vertical displacement, domain and range
*Thursday, June 4, 2015 by Kitty*

**How Children Learn**

1. Which of the following is an essential ingredient of academic self-esteem? A. Individual assignments requiring problem solving (me) B. Acceptance by teachers and teacher aides C. Meeting deficiency and growth needs D. A school without grades 2. What kind of responses do ...
*Thursday, June 4, 2015 by Danielle*

**Math**

1/6^8/3-2/3 What Do I Do?
*Thursday, June 4, 2015 by John Dosley*

**Math**

Sarah needs to cover the lateral area and the base on top of the cylinder. (cylinder 6 in on the base 12 in in length) About how many square inches of paper will Sara need? 282 in. 2 254 in. 2 679 in. 2 565 in. 2
*Thursday, June 4, 2015 by Alina*

**math**

Thom has a scale model of his car. The scale is 1 inch = 12 inches. If the actual car has 16- inch wheels what size are the wheels on the scale model. I don't know where to begin
*Thursday, June 4, 2015 by Dorothy*

**math**

Below is a diagram of a right triangle. The coordinates of the two vertices are shown. Find the lengths of sides f and g. Write your answers in terms of the variables f and g. f = √() g = √()
*Thursday, June 4, 2015 by zenayah*

**Math**

Jennifer earned $249.60 in 6 1/2 years on a $640 investment. What was the simple interest rate?
*Thursday, June 4, 2015 by Trent*

**Math**

given the data 21, 13,13,37,13,23,25,15 what is the out liner a.13 b.15 c.23 d.37
*Thursday, June 4, 2015 by Alina*

**Math**

Tom Whisky ou l'Illusioniste toqué?
*Thursday, June 4, 2015 by Gregory*

**math help**

4,9,x,37 is a quadratic sequence (a)show that x=20 (b)determine the nth term of the sequence thanks in advance
*Thursday, June 4, 2015 by happy*

**math**

Ax^2+bx=bx^2+a prove that it's roots are rational for all real values of a and b
*Thursday, June 4, 2015 by mek*

**Math**

you own 5 pair of jeans and want to take 2 of them with you on vacation in how many ways can you choose 2 pairs of jeans A.10 ways B.15 ways C.4 ways D.20 ways NEED HELP!! DON'T UNDERSTAND!!
*Thursday, June 4, 2015 by Alina*

**Math**

1.Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What are the odds in favor of picking a vowel? 3:7 4:7 3:4**** 4:3 2.Jamal writes the letters k-a-n-s-a-s on cards and then places the cards in hat what is the probability of picking an s ...
*Thursday, June 4, 2015 by Alina*

**Math**

Prime factorize the following using factor tree method: 66, 99, 20, 108, 37 and 450
*Thursday, June 4, 2015 by Jacob*

**math**

A 10side of poligon as all its angle equal.how much is each external angles
*Thursday, June 4, 2015 by salman khan*

**Math **

If a graph of a quadratic function can have 0, 1 or 2 x-intercepts. How can you predict the number of x-intercepts without drawing the graph or (completely) solving the related equation? Suppose that the graph of f(x) = ax^2+bx+c has x-intercepts (m,0) and (n,0). What are the ...
*Thursday, June 4, 2015 by Molly*

**math practice help**

add or subtract (2x^2+6x+1)+(-7x^2+2x-3) 5x^2-4x-2 -5x^2+8x-2 5x^2-8x+2 -9x^2-8x+2 (3x^2-7x-4)-(6x^2-6x+1) -3x^2-x-5 -3x^2-13x+5 9x^2-x+5 3x^2-13x-5 These are just practice problems. could someone help me figure out how to solve them and explain how they got the answer? @Steve...
*Thursday, June 4, 2015 by Umacblackbelt*

**math help**

Solve for x 2.3^x=81-3^x thanks
*Thursday, June 4, 2015 by mek*

**math**

Simplify the trigonometric function sin^4x-cos^4x cos^2â-sin^2â=1+2cosâ (1+cot^2x )(cos^2x )=cot^2x cot^2t/csct =(1-sin^2t)/sint (Work on both sides!) sinècsc&...
*Thursday, June 4, 2015 by Anonymous*

**math**

Solve the trigonometric equation from 0¡ã¡Üx¡Ü360 tanx+¡Ì3=0 2 sec^2x+tan^2x-3=0
*Thursday, June 4, 2015 by Anonymous*

**math**

Solve the trigonometric equation from 0¡ã¡Üx¡Ü360 tanx+¡Ì3=0
*Thursday, June 4, 2015 by Anonymous*

**math**

The function f(x)=7/12 x^2+¦Ð is one-to-one on the domain if and if x¡Ý0. Find the f^(-1) (x).
*Thursday, June 4, 2015 by Anonymous*

**math**

Let equation of an hyperbola be y^2-4x^2+4y+24x-41=0 a. Find the standard form b. Find the center c. Find the vertices d. Find the foci e. Find the slant asymptotes
*Thursday, June 4, 2015 by Anonymous*

**math**

Let the equation of a circle be x^2+y^2-14x+8y+56 a. Find the standard form of the circle b. Find the center of the circle c. Find the radius of the circle
*Thursday, June 4, 2015 by Anonymous*

**math**

let equation of an ellipse be x^2+4y^2+6x-8y+9=0 a. Find the standard form of the ellipse b. Find the center c. Find the vertices d. Find the foci e. Find the eccentricity
*Thursday, June 4, 2015 by Anonymous*

**Math**

at 10:00 am on April 26, 2006, a building 300 feet high casts a shadow 50 feet long. What is the angle of elevation of the sun?
*Thursday, June 4, 2015 by Anonymous*

**math**

help on this please? Factor completely 2x2 - 2x - 24. (2x - 6)(x + 4) (2x - 8)(x + 3) 2(x - 3)(x + 4) 2(x - 4)(x + 3)
*Thursday, June 4, 2015 by crissy*

**math**

F(x)=-(x+1)^2+4 determine the nature of the roots
*Thursday, June 4, 2015 by kem*

**Math: Arithmetic Sequence.**

the 3rd of an Arithmetic sequence is 8 of the 16th term is 47. Find a subed 1 and the common difference. Construct the sequence.
*Thursday, June 4, 2015 by Jan*

**math**

One ordered pair (a,b) satisfies the two equations ab^4 = 12 and a^5 b^5 = 7776. What is the value of a in this ordered pair? Note: You can enter radicals with the \sqrt command. For example, \sqrt[3]{5} gives you \sqrt[3]{5}. Therefore, you can enter 2\sqrt[4]{6} as "2\...
*Thursday, June 4, 2015 by bargav*

**math**

Two paper strips each 5 cm wide are laid across each other at an angle of 30 degrees. Determine the area of the overlapping area. I have no idea where to start with this question or how to go on. I know it has to do with cosine or sine law. But what do I do
*Wednesday, June 3, 2015 by lilly*

**5th grade math**

16 times 1=16 what property is this 1 times 18 =18 what property is this
*Wednesday, June 3, 2015 by Mythreyee*

**5th grade math**

What is he price of a hamburger and cheeseburger at this restaurant h+3c=$9.00 2h+c=$5.50
*Wednesday, June 3, 2015 by Mythreyee*

**math**

An airplane is flying from Montreal to Vancouver. The wind is blowing from the west at 60km/hour. The airplane flies at an airspeed of 750km/h and must stay on a heading of 65 degrees west of north. A) what heading should the pilot take to compensate for the wind? B) what is ...
*Wednesday, June 3, 2015 by lilly*

**math**

2 trains leave metropolos at same, one going south 50 mph the other east 40 mph. How far apart will they be at 3 hours
*Wednesday, June 3, 2015 by ken*

**Math (Grade 9)**

A submarine travels 16km/h on the surface of the water and 10km/h under water. The sub covers 138km in 12 hours. I) Write 2 equations to represent; (Define Variables) total number of hours: Total distance travelled. II) Use equations to calculate the spent on the surface and ...
*Wednesday, June 3, 2015 by Nick*

**Math 7**

how high is a tree that casts a 25 foot shadow at the same time a 6 foot pole casts a 10 foot shadow? Please help! I don't understand how to solve any problem like this!!
*Wednesday, June 3, 2015 by Jade*

**Consumer math**

Ed borrowed 1,500 for 4 months at 13.5 %. How much did he have to pay back under an add-on plan?
*Wednesday, June 3, 2015 by Caleb*

**Math**

Which of the following equations gives the relationship between S and T in the table below? S 1 2 3 4 5 6 T 1 4 7 10 13 16 How do you find equations again?
*Wednesday, June 3, 2015 by Anna*

**Math**

1. Cate went on a trip of 120 miles at x miles per hour. Returned over same route at 5miles/hour faster than previous rate.If time for return trip was one-third of an hour less than time for the outgoing trip,how do you find x? (Set up the chart right, and used the time column...
*Wednesday, June 3, 2015 by Anna*

**Math**

I an taking the SAT this week and I am so screwed. I keep getting these types(and ratio and probability- tips?) of questions wrong on practices. I basically set up a chart for d(distance/amount of sth), v(speed/rate), and t(time) and try to fill it out. I usually fill it out(...
*Wednesday, June 3, 2015 by Bethany*