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Alan3354 answered: 30973 problems
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Surface-area/550409: Find the area of the triangle who sides measures 18.5 cm,14.1 cm,13 cm, 12 cm 1 solutions Answer 358711 by Alan3354(30993)   on 2011-12-27 10:39:11 (Show Source): You can put this solution on YOUR website! Find the area of the triangle who sides measures 18.5 cm,14.1 cm,13 cm, 12 cm ----------- Too many sides for a triangle.

Exponents/550405: please help me solve this this equation 1 solutions Answer 358710 by Alan3354(30993)   on 2011-12-27 10:38:11 (Show Source): You can put this solution on YOUR website! please help me solve this this equation ------------ That's not an equation. I can tell, there's no equal sign. ------------- Invert and change the signs of the exponents: = = =

Numbers_Word_Problems/550408: two-thirds of a number is 36. find the number 1 solutions Answer 358709 by Alan3354(30993)   on 2011-12-27 10:28:33 (Show Source): You can put this solution on YOUR website! two-thirds of a number is 36. find the number --- Hint: 1/3 of the number is 18

Triangles/550401: if a triangle have vertices (2,3)(3,4)(4,5)then find its area in 9different ways 1 solutions Answer 358705 by Alan3354(30993)   on 2011-12-27 09:46:47 (Show Source): You can put this solution on YOUR website! if a triangle have vertices (2,3)(3,4)(4,5)then find its area in 9different ways ----------- Those points are colinear, on the same straight line. --> no triangle, no area

Polynomials-and-rational-expressions/550319: of 3x+1/4x-8 and x squared-4/x+5 on a rectangle 1 solutions Answer 358657 by Alan3354(30993)   on 2011-12-26 21:07:49 (Show Source): You can put this solution on YOUR website! What does that mean?

Word_Problems_With_Coins/550354: what four coins sum to 83 cents? 1 solutions Answer 358656 by Alan3354(30993)   on 2011-12-26 21:07:08 (Show Source): You can put this solution on YOUR website! duplicate

Word_Problems_With_Coins/550356: What four coins sum to 83 cents? 1 solutions Answer 358655 by Alan3354(30993)   on 2011-12-26 21:06:31 (Show Source): You can put this solution on YOUR website! What four coins sum to 83 cents? ------- In US money, 3 would have to be pennies, so it's not possible. You didn't say what country, tho.

Travel_Word_Problems/550340: If you are going 80 mph (speed) and have to travel 503 miles what is your arrival time? 1 solutions Answer 358654 by Alan3354(30993)   on 2011-12-26 21:01:05 (Show Source): You can put this solution on YOUR website! If you are going 80 mph (speed) and have to travel 503 miles what is your arrival time? ------------- d = r*t t = d/r = 503/80 hours enroute The arrival time depends on the start time.

Exponential-and-logarithmic-functions/550292: complete the trinomial such that it's a perfect square: y=x^2+__x+81 1 solutions Answer 358619 by Alan3354(30993)   on 2011-12-26 18:03:09 (Show Source): You can put this solution on YOUR website! complete the trinomial such that it's a perfect square: y=x^2+__x+81 ------------ c = (b/2a)^2 = 81 a = 1 b/2a = 9 b/2 = 9 b = 18 ----------- -->

Exponential-and-logarithmic-functions/550297: solve: (2x+8)^1/2-8=0 1 solutions Answer 358617 by Alan3354(30993)   on 2011-12-26 17:55:52 (Show Source): You can put this solution on YOUR website! solve: (2x+8)^1/2-8=0 ---------- Square both sides 2x+8 = 64 Can you finish it?

Exponential-and-logarithmic-functions/550290: simplify: 15-5i^2+3i^32 1 solutions Answer 358615 by Alan3354(30993)   on 2011-12-26 17:43:11 (Show Source): You can put this solution on YOUR website! simplify: 15-5i^2+3i^32 ----- 15-5i^2+3i^32 = 15 -5*(-1) + 3*1 = 15 + 5 + 3 = 23

Linear-equations/550325: How do I find three different ordered pairs that are the solutions of this equation: y=2x-1? 1 solutions Answer 358614 by Alan3354(30993)   on 2011-12-26 17:37:13 (Show Source): You can put this solution on YOUR website! How do I find three different ordered pairs that are the solutions of this equation: y=2x-1? ----------- Pick 3 different values for x, and find y. x = 0, y = -1 --> (0,1) Do 2 more.

Roman-numerals/550312: Does anyone know what this " / " symbol means? I am entering a contest where one needs to answer a skill testing question and they are always very simple. This is the entire question (5X8) + (12/3) = is it 12 divided by 3? 1 solutions Answer 358597 by Alan3354(30993)   on 2011-12-26 15:41:05 (Show Source): You can put this solution on YOUR website! Does anyone know what this " / " symbol means? I am entering a contest where one needs to answer a skill testing question and they are always very simple. This is the entire question (5X8) + (12/3) = is it 12 divided by 3? --- It is 12 over 3, = 4 12/3 = --------- PS Use * for multiply. x is often used for other things. And, ^ is used for exponents, or powers. eg, 2^3 = 8.

Travel_Word_Problems/550220: If a person travels at the speed of 40km/hr then he reaches 5min late and if the person travels at the speed of 50km/hr then he reaches 3min,find the distance and the time? 1 solutions Answer 358592 by Alan3354(30993)   on 2011-12-26 15:17:44 (Show Source): You can put this solution on YOUR website! If a person travels at the speed of 40km/hr then he reaches 5min late and if the person travels at the speed of 50km/hr then he reaches 3min,find the distance and the time? ------------------ d/40 = t + 5/60 d/50 = t - 3/60 ------------- Subtract d/200 = 8/60 d = 1600/60 km d = 80/3 km ------ t = (80/3)/40 - 5/60 = 2/3 - 1/12 t = 7/12 hr t = 35 minutes to be "on time"

Polygons/550306: How do you find the measure of each exterior angle of a polygon? When you have the number of sides, for example, 15? 1 solutions Answer 358590 by Alan3354(30993)   on 2011-12-26 15:05:44 (Show Source): You can put this solution on YOUR website! The sum of the Ext angles is 360 for all polygons. For 15, = 360/15 = 24 degrees

Exponential-and-logarithmic-functions/550300: four consecutive #'s subtract to be -50. What is the third number? 1 solutions Answer 358589 by Alan3354(30993)   on 2011-12-26 15:03:13 (Show Source): You can put this solution on YOUR website! Subtract from what?

Expressions-with-variables/550284: How do you express 6.22x 10^-3 in standard form? 1 solutions Answer 358584 by Alan3354(30993)   on 2011-12-26 14:27:38 (Show Source): You can put this solution on YOUR website! Start with 6.22. Move the decimal point 3 places to the left, adding zeroes as needed. = 0.00622

Triangles/550183: Given the following triangle , find the measure of the smallest triangle. w=33 ; v=51 ; p=45 1 solutions Answer 358574 by Alan3354(30993)   on 2011-12-26 13:14:38 (Show Source): You can put this solution on YOUR website! How many triangles are there? Are those the lengths of the sides?

Average/550260: perform the indicated operation. write your final answer exactly as a fraction in lowest terms. please show all of your work 7/10-1/2 1 solutions Answer 358571 by Alan3354(30993)   on 2011-12-26 12:36:09 (Show Source): You can put this solution on YOUR website! perform the indicated operation. write your final answer exactly as a fraction in lowest terms. please show all of your work 7/10-1/2 ------------ Hint: 1/2 = 5/10

Word_Problems_With_Coins/550270: CAN SOMEONE PLEASE HELP ME AND SHOW ME HOW TO WORK OUT THESE PROBLEMS.I JUST DONT WANT THE ANSWERS, BECAUSE I DONT UNDERSTAND. IF U BREAK IT DOWN FOR ME I WILL UNDERSTAND IT BETTER. I DID THEM ON MY OWN AND MY PROFESSOR SAID MY ANSWERS WAS WRONG TWICE AND I DON'T KNOW WHAT I AM DOING WRONG. THANKS ALOT. 1) A BAG PF DIMES AND QUARTERS IS WORTH $3.55. THERE ARE FOUR MORE THAN DOUBLE THE NUMBER OF DIMES AS QUARTERS. HOW MANY OF THE COINS ARE DIMES? 2)THE PERIMETER OF A TRIANGLE IS 23 INCHES. THE LONGEST SIDE EXCEEDS THE SHORTER BY 7 INCHES WHILE THE THIRD SIDE IS TWICE THE SHORT SIDE. WHAT IS THE LENGTH OF THE LONGEST SIDE? 3) TWICE A NUMBER LESS FIVE IS LESS THAN THE NUMBER LESS THREE. WHAT'S THE VALUE OF THE NUMBER? 4) THE SUM OF TWO NUMBERS IS 25, AND THEIR DIFFERENCE IS 9. WHAT ARE THE TWO NUMBERS? 1 solutions Answer 358570 by Alan3354(30993)   on 2011-12-26 12:35:16 (Show Source): You can put this solution on YOUR website! 1) A BAG PF DIMES AND QUARTERS IS WORTH $3.55. THERE ARE FOUR MORE THAN DOUBLE THE NUMBER OF DIMES AS QUARTERS. HOW MANY OF THE COINS ARE DIMES? 2)THE PERIMETER OF A TRIANGLE IS 23 INCHES. THE LONGEST SIDE EXCEEDS THE SHORTER BY 7 INCHES WHILE THE THIRD SIDE IS TWICE THE SHORT SIDE. WHAT IS THE LENGTH OF THE LONGEST SIDE? 3) TWICE A NUMBER LESS FIVE IS LESS THAN THE NUMBER LESS THREE. WHAT'S THE VALUE OF THE NUMBER? 4) THE SUM OF TWO NUMBERS IS 25, AND THEIR DIFFERENCE IS 9. WHAT ARE THE TWO NUMBERS? ------------------- Start with posting what you did, so we can see what you did wrong. email it via the Thank You note.

Triangles/550250: what is the length of a leg of an isosceles right triangle with a hypotenuse of the square root of 50? 1 solutions Answer 358569 by Alan3354(30993)   on 2011-12-26 12:30:34 (Show Source): You can put this solution on YOUR website! what is the length of a leg of an isosceles right triangle with a hypotenuse of the square root of 50? ------------- Use Pythagoras Since a = b, You can finish it.

Distributive-associative-commutative-properties/550254: use the distributive property to multiply 8(p+9) 1 solutions Answer 358568 by Alan3354(30993)   on 2011-12-26 12:19:50 (Show Source): You can put this solution on YOUR website! Show your attempts first. email for assistance or to check your work via the Thank You note.

Exponents/550268: how do i solve 5(k-2)=10(3k+9) 1 solutions Answer 358566 by Alan3354(30993)   on 2011-12-26 12:18:28 (Show Source): You can put this solution on YOUR website! Multiply, then add and subtract as necessary.

Polynomials-and-rational-expressions/550259: Factor the giving polynomials: y2+4y-32 9a2-4a2 8y2-40y2 s2-5s-24 y2+5y 9y2-25 5z2+3z-2 1 solutions Answer 358565 by Alan3354(30993)   on 2011-12-26 12:17:44 (Show Source): You can put this solution on YOUR website! Show your efforts. email for help or to check via the Thank You note.

Rectangles/550267: If area and perimeter of a rectangle are given:How can i find out the dimensions? Kindly tell me a method to solve such type of problem. K. Sharrma 1 solutions Answer 358564 by Alan3354(30993)   on 2011-12-26 12:16:40 (Show Source): You can put this solution on YOUR website! Do it like this: ---------------- Area of a rectangular field is 120 sq.m and perimeter is 46 m. Findout the dimensions of the field. ---------------- L*W = 120 L + W = 23 --> W = 23 - L -------------- L*(23 - L) = 120 23L -L^2 = 120 L^2 - 23L + 120 = 0 (L - 8)*(L - 15) = 0 ------------- --> 8 by 15 =================== If it's not factorable, use the quadratic equation.

Rectangles/550265: Area of a rectangular field is 120 sq.m and perimeter is 46 m. Findout the dimensions of the field. 1 solutions Answer 358563 by Alan3354(30993)   on 2011-12-26 12:14:21 (Show Source): You can put this solution on YOUR website! Area of a rectangular field is 120 sq.m and perimeter is 46 m. Findout the dimensions of the field. ---------------- L*W = 120 L + W = 23 --> W = 23 - L -------------- L*(23 - L) = 120 23L -L^2 = 120 L^2 - 23L + 120 = 0 (L - 8)*(L - 15) = 0 ------------- --> 8 by 15

Average/550266: order the following from least to greatest. be sure to show all of your work 7/8 5/6 -6 -8 5 1 solutions Answer 358562 by Alan3354(30993)   on 2011-12-26 12:09:16 (Show Source): You can put this solution on YOUR website! Show your work first.

Average/550264: translate to an algebraic expression A number divided by 15 1 solutions Answer 358561 by Alan3354(30993)   on 2011-12-26 12:05:44 (Show Source): You can put this solution on YOUR website! n = a number --------- --> n/15

Divisibility_and_Prime_Numbers/550249: Factor completely Please show work as I am not sure how to do this. 9t2 + 14t + 5 1 solutions Answer 358560 by Alan3354(30993)   on 2011-12-26 12:04:00 (Show Source): You can put this solution on YOUR website! Factor completely Please show work as I am not sure how to do this. 9t2 + 14t + 5 ------------- It will be (at + b)*(ct + d) b*d = 5 --> (at + 1)*(bt + 5) Find integers for a & b so that a*b = 9 and 5a + b = 15 It's trial and error with only a few possibilities. ----- For a & b, it's either 1*9 or 3*3 ========== There's nothing to be gained by me doing it.

Average/550255: evaluate 4x, for x=4 1 solutions Answer 358559 by Alan3354(30993)   on 2011-12-26 12:00:01 (Show Source): You can put this solution on YOUR website! Sub 4 for x.

Radicals/550243: 2x^2-5y^2=-12 1 solutions Answer 358558 by Alan3354(30993)   on 2011-12-26 11:59:24 (Show Source): You can put this solution on YOUR website! Do you have a question?