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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 438664: In a survey of 756 high school students 70 percent more students preferred cell phones to landlines. How many students preferred landline phones Click here to see answer by robertb(4012)

 Question 438700: If x^2+2xy+y^2=8, find 3(x+y)^2. The choices that are given are 2, 4, 24, or cannot be determined. Click here to see answer by solver91311(16872)

 Question 438947: Hi, can someone please help me find all the zeros in order using synthetic division and quadratic formula for equation: P(x)= 2x^9 - x^8 - 16x^7 + 17x^6 - 6x^5 - 5x^4 + 68x^3 - 77x^2 + 18 Thankyou!... Click here to see answer by Edwin McCravy(8893)
 Question 438947: Hi, can someone please help me find all the zeros in order using synthetic division and quadratic formula for equation: P(x)= 2x^9 - x^8 - 16x^7 + 17x^6 - 6x^5 - 5x^4 + 68x^3 - 77x^2 + 18 Thankyou!... Click here to see answer by richard1234(5390)

 Question 439046: If the east west exit doors of a banquet hall are open, the occupants can clear out in two minutes. It takes 3 minutes longer to clear the hall if just the east door is open as it does if just the west door is open. How long does it take to clear the hall if just the west door is open? I got 3 but then I added it to x+3 to get 6 not sure if it is correct. Click here to see answer by stanbon(57282)

 Question 439074: how do you find the square root of a number? Click here to see answer by MathLover1(6625)

 Question 439230: The Pythagorean Theorem states that_______________________ where r and s represent the legs of a right triangle and t represents the length of the hypotenuse Click here to see answer by Edwin McCravy(8893)

 Question 439222: If leah is 6 years older than sue, and john is 5 years older than leah, and the total of their ages is 41. Then how old is sue? Click here to see answer by jorel1380(2518)

 Question 439401: A person's intelligence quotient (IQ) is determined by multiplying the quotient of his or her mental age and chronological age by 100. Find the mental age of a person 5 years old whose IQ is 160. Click here to see answer by stanbon(57282)

 Question 439290: I have to simplfy some problems that contain letters and exponets the problem is 6x^4•x^2 , what's the answer? Click here to see answer by edjones(7569)

 Question 439450: how do you solve this... 4x + 3(2x + 3)= can you please show me the working out? thanks Lauren. Click here to see answer by stanbon(57282)

 Question 439453: how do you solve this in really simple steps?... 9a - 2(4a + 5) Click here to see answer by stanbon(57282)

 Question 439452: how do you solve this... 9a - 2(4a - 1)= can you please show me the working out but in really simple steps please. thanks Lauren. Click here to see answer by stanbon(57282)

 Question 439600: Please help me. I am taking a math test that my teacher made us take home. The perimeter of a triangle is 24 cm. One side is 2 centimeters longer than the shortest side. The longest side is 2 centimeters less than twice the length of the shortest side. Fin the length of each side of the triangle. If you can please explain how you solved the problem so that next time I can solve it by myself. Thanks so much! Click here to see answer by jorel1380(2518)

 Question 439181: Vectors a=(4,0,2) b=(6,-3,0) 1. Show clearly that cosθ=4/5 2. Hence,or otherwise, find the exact value of cos2θ. 1. I got Cosθ=a.b/|a||b| =24/√20x√45 =24/30 =4/5 It's part 2. that I am stuck on which is to find the exact value of cos2θ. Any help will be greatly appreciated. Andy. Click here to see answer by robertb(4012)

 Question 439942: Of the height of a rectangale is 9 5/6 mm. and the base is 1 1/2 mm, what is the perimeter of the rectangle? Click here to see answer by jorel1380(2518)

 Question 440106: I solved the compound equality 7 is less than or equal to 3t +1 is less than or equal to 22. Which I solved to 2 is less than or equal to t less than or equal to 7.. I need to graph the solution set but I'm not sure how to do so.......... Click here to see answer by stanbon(57282)

 Question 440121: hi i have some algebra II homework and im a little stuck. One of the questions says perform the indicated operations : 2 radical 27- 3 radical 48 since the numbers under the radical arent the same im not to sure of what to do. If you could help me that would be great Click here to see answer by stanbon(57282)

 Question 440123: hi i need help with the following problem: the cubed root of 2x+7=5 (the five is not under the radical). i have it for homwork and i dont know what to do. i tried looking at my notes but thats not really helping me. if you could show me how to figure out this problem that would be great! thank you Click here to see answer by ewatrrr(10682)

 Question 440166: i need to solve this equation for homework: square root 3x+4 +3/2=3 i know that i have to bring over 3/2 but then im not sure of what to do after that. if you could help that would be great Click here to see answer by ewatrrr(10682)

 Question 440168: here is the problem im unsure of how to do.. Solve the equation and check for extraneous solutions: 3(x-5)^3/2-6=18 i really dont know how to do this. If you could help me that would be great. Thank you Click here to see answer by rwm(914)

 Question 440405: How do u do graphing equations with fractional coefficients? Click here to see answer by solver91311(16872)

 Question 440173: http://learn.flvs.net/webdav/assessment_images/educator_math1/v9/08_06c_57_001.jpg go there then answer this question One side in the figure below is not labeled. What is its length? Explain how you know. Click here to see answer by richard1234(5390)

 Question 440798: I am working on solve the following logarithmic equation. Round answer to 4 decimal places. The problem is 1n(x+6)+1n(x+1)=1n(x+2) I have 2 answers it ask for x={ then it will also be a decimal answer. Thanks! Click here to see answer by edjones(7569)

 Question 441193: Find the Unit vector that has the same direction as V v=-3i-4j Click here to see answer by richard1234(5390)

 Question 441693: Write each decimal as a fractio or mixed number in lowest term 18.4 Click here to see answer by stanbon(57282)

 Question 441813: Shoe sizes and fooot length are related by the formula S=3F-24, where S represents the shoes size and F represents the length of the foot, in inches. A. Slove the formula for F B. To the nearest tenth of an inch, how long is the foot of a person who wears a size 10 1/2 Shoe? Solve for x: 2(x-3)= 1.2-x Click here to see answer by stanbon(57282)
 Question 441813: Shoe sizes and fooot length are related by the formula S=3F-24, where S represents the shoes size and F represents the length of the foot, in inches. A. Slove the formula for F B. To the nearest tenth of an inch, how long is the foot of a person who wears a size 10 1/2 Shoe? Solve for x: 2(x-3)= 1.2-x Click here to see answer by MathLover1(6625)

 Question 441826: What is B to the fourth power minus 1,000 as the difference of two squares? Click here to see answer by MathLover1(6625)

 Question 441827: 12x + 7y = 19 and 4x - y = 3 then what is the value of 8x + 8y? Click here to see answer by MathLover1(6625)

 Question 441874: The area of a rectangle is 6 yard-square. The length of the rectangle is one more than twice the width. Find the dimensions of the rectangle. Click here to see answer by jorel1380(2518)

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