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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Expressions-with-variables/483995: Evaluate the following expression: \(_4^11\)\(_3^6\)\(_1^4\) 1 solutions Answer 331199 by Alan3354(30993)   on 2011-08-21 15:16:21 (Show Source): You can put this solution on YOUR website! What do \ and _ mean?

Polynomials-and-rational-expressions/483956: I need help please. Short Answer. Add the following: (9.8x2 – 2.2x – 7.8) + (-4.9x2 – 1.1x + 7) 1 solutions Answer 331183 by Alan3354(30993)   on 2011-08-21 14:05:32 (Show Source): You can put this solution on YOUR website! Duplicate.

Polynomials-and-rational-expressions/483955: Can someone help with this please? Short Answer. Add the following: (9.8x2 – 2.2x – 7.8) + (-4.9x2 – 1.1x + 7) 1 solutions Answer 331182 by Alan3354(30993)   on 2011-08-21 14:05:01 (Show Source): You can put this solution on YOUR website! Add the x^2 terms, add the x terms, add the coefficients.

Polynomials-and-rational-expressions/483954: Can someone help me with this? Find the product: -6x(5x2 + 4x + 4) A. -x3 – 2x2 – 2x B. -30x3 – 24x2 – 24x C. -30x2 – 24x – 24 D. -30x3 + 4x + 4 1 solutions Answer 331181 by Alan3354(30993)   on 2011-08-21 14:04:11 (Show Source): You can put this solution on YOUR website! duplicate

Equations/483970: (5/3)x=-20 1 solutions Answer 331179 by Alan3354(30993)   on 2011-08-21 14:02:38 (Show Source): You can put this solution on YOUR website! Multiply by 3, then divide by 5

Angles/483965: My problem is: find the measure of angel 1, 2 & 3; Given the measure of angle 1 is 2x+40; the measure of angle 2 is 2y + 40 and the measure of angle 3 is x + 2y. 1 solutions Answer 331178 by Alan3354(30993)   on 2011-08-21 14:02:00 (Show Source): You can put this solution on YOUR website! Not enough info. Is it a triangle, or are there more angles that are not mentioned?

Polynomials-and-rational-expressions/483957: I need help on this one... Find the product: -6x(5x2 + 4x + 4) A. -x3 – 2x2 – 2x B. -30x3 – 24x2 – 24x C. -30x2 – 24x – 24 D. -30x3 + 4x + 4 1 solutions Answer 331177 by Alan3354(30993)   on 2011-08-21 14:00:05 (Show Source): You can put this solution on YOUR website! Find the product: -6x(5x2 + 4x + 4) ------------- Multiply each term in the trinomial by -6x

Polynomials-and-rational-expressions/483961: How do you factor 25y^2-49w^2 1 solutions Answer 331176 by Alan3354(30993)   on 2011-08-21 13:58:54 (Show Source): You can put this solution on YOUR website! It's the difference of 2 squares. =

Travel_Word_Problems/483940: A car travels at the rate of 40 miles per hour and averages 15 miles per gallon of gasoline. Which of the following best approximates the number of gallons that will be used in 2 hours of traveling at 40 miles per hour? 1 solutions Answer 331165 by Alan3354(30993)   on 2011-08-21 13:00:01 (Show Source): You can put this solution on YOUR website! 2*40 = 80 miles 80 mi/15 mi/gal = 80/15 gallons = 16/3 gallons

Linear-equations/483939: i need help solving 3/2x+2=1/2-1/2x 1 solutions Answer 331164 by Alan3354(30993)   on 2011-08-21 12:58:53 (Show Source): You can put this solution on YOUR website! Is it (3/2)x or 3/(2x) ? Or 3/(2x + 2) ?

absolute-value/483937: My homework is on Absolute Value inequalities. The math problem is So far i got: Are my signs correct? 1 solutions Answer 331163 by Alan3354(30993)   on 2011-08-21 12:57:36 (Show Source): You can put this solution on YOUR website! My homework is on Absolute Value inequalities. The math problem is So far i got: Are my signs correct? ------------------ |10+x| < 8 10+x < 8 x < -2 --------- -10-x < 8 -x < 18 x > -18 ---------- -18 < x < -2 Same answer, but more succinct.

Finance/483909: Television sets: What does it mean to refer to a 20-in tv set or a 25in tv set? such units refer to the diagonal of the screen. A 35-in tv set also has a width of 28 inches. What is its height? What is the height of a 35-in tv? _________inches. Please help 1 solutions Answer 331151 by Alan3354(30993)   on 2011-08-21 12:36:53 (Show Source): You can put this solution on YOUR website! It's the 3, 4, 5 right triangle multiplied by 7 21, 28, 35

Radicals/483917: true or false: (3)/(2i)=(6/5)-((3/5)i) 1 solutions Answer 331150 by Alan3354(30993)   on 2011-08-21 12:35:50 (Show Source): You can put this solution on YOUR website! false

Quadratic_Equations/483931: 6x+8y=22 -5X+Y=20 1 solutions Answer 331148 by Alan3354(30993)   on 2011-08-21 12:32:55 (Show Source): You can put this solution on YOUR website! Multiply the 2nd eqn by 8, then subtract

Quadratic_Equations/483932: X+2Y=9 -X+6Y=7 1 solutions Answer 331147 by Alan3354(30993)   on 2011-08-21 12:32:10 (Show Source): You can put this solution on YOUR website! Add them

Equations/483927: Can you please with this problem? Your friend evaluates (10-k)/5 for k= 5 and gets 9 for an answer. Explain your friends error. I think the answer is 1 because 10-k which is 5 = 5 and then 5/5 = 1. I dont understand how you would get 9. 1 solutions Answer 331144 by Alan3354(30993)   on 2011-08-21 12:23:54 (Show Source): You can put this solution on YOUR website! Can you please with this problem? Your friend evaluates (10-k)/5 for k= 5 and gets 9 for an answer. Explain your friends error. ----------- 10 - (5/5) = 9

Travel_Word_Problems/483923: It takes heidi 10 minutes to get to school going at a speed of 27 miles/home. How long does it take her to get to school if she goes 40 miles/hour? 1 solutions Answer 331139 by Alan3354(30993)   on 2011-08-21 11:51:14 (Show Source): You can put this solution on YOUR website! 10:27::t:40 27t = 400 t = 400/27 t =~ 14.8 minutes

Polynomials-and-rational-expressions/483922: Graph y=-2x^2+6 1 solutions Answer 331138 by Alan3354(30993)   on 2011-08-21 11:44:33 (Show Source): You can put this solution on YOUR website! dl the FREE graph software at http://www.padowan.dk ---------- Use Insert, then -2x^2 + 6

Divisibility_and_Prime_Numbers/483920: find the greatest five digit number that is divisible by 21? 1 solutions Answer 331137 by Alan3354(30993)   on 2011-08-21 11:37:44 (Show Source): You can put this solution on YOUR website! Divide 100000 by 21 Multiply the integer part by 21

Linear_Equations_And_Systems_Word_Problems/483910: ( 2, -1 ) and ( 6, 3 ) 1 solutions Answer 331136 by Alan3354(30993)   on 2011-08-21 11:36:16 (Show Source): You can put this solution on YOUR website! What about them?

Linear-systems/483892: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 9x + 6y = 60 -27x – 18y = -180 1 solutions Answer 331127 by Alan3354(30993)   on 2011-08-21 11:01:38 (Show Source): You can put this solution on YOUR website! 9x + 6y = 60 -27x – 18y = -180 -------------------- 3x + 2y = 20 eqn 1 times 1/3 3x + 2y = 20 eqn 2 times -1/9 ----------- It's the same eqn --> dependent --> an infinite # of solutions

Radicals/483904: What is the diagonal of the rectangular prism with dimensions 3″ x 4″ x 6″? 1 solutions Answer 331126 by Alan3354(30993)   on 2011-08-21 10:56:57 (Show Source): You can put this solution on YOUR website!

Equations/483893: Need formula for this problem:How many gallons of water are in a 12 inch pipe 1 mile long? 1 solutions Answer 331125 by Alan3354(30993)   on 2011-08-21 10:56:04 (Show Source): You can put this solution on YOUR website! , r = 6, h = 5280 ft, volume in cubic feet cubic feet = 190080*pi*1728 cubic inches = 328458240*pi cubic inch --------------- 1 gallon =~ 231 cubic inches = 231/1728 cu ft Vol = 190080*pi*1728/231 gallons Vol =~ 4467022 gallons --------------------- Why do you need to know this? We have a system at Charleston SC that has 36" pipes 2 miles long from the storage tanks to the harbor. The volume in the pipes is called "line pack."

Linear-equations/483883: Find the slope intercept equation of the line that has the given characteristics. Slope 8.8 and y intercept (0,7) 1 solutions Answer 331119 by Alan3354(30993)   on 2011-08-21 10:39:18 (Show Source): You can put this solution on YOUR website! It's y = mx + b where m is the slope and b is the y-intercept. ------------- m = 8.8 b = 7

Linear-systems/483891: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 3y = -45.5 -5x + 8y = -43 1 solutions Answer 331117 by Alan3354(30993)   on 2011-08-21 10:38:14 (Show Source): You can put this solution on YOUR website! Multiply the 1st eqn by 5, and the 2nd by 4, then add them.

Finance/483873: Does interest rate always compound? Or can there be interest rate that makes my account grow linearly? 1 solutions Answer 331116 by Alan3354(30993)   on 2011-08-21 10:37:26 (Show Source): You can put this solution on YOUR website! Interest can be compound or simple. If it's your money being used by someone else, such as a bank, always get compound.

Exponents-negative-and-fractional/483882: 5.04+7.1 1 solutions Answer 331115 by Alan3354(30993)   on 2011-08-21 10:36:16 (Show Source): You can put this solution on YOUR website! You try it, I'll check your answer.

Quadratic_Equations/483853: How to sketch the graphs of (i) y=(x+1)cute and (ii) y=-(x-1)cute +4 1 solutions Answer 331114 by Alan3354(30993)   on 2011-08-21 10:35:41 (Show Source): You can put this solution on YOUR website! What does "cute" mean?

Quadratic_Equations/483887: Sketch the graphs of Y=(2.4)(to power x) and Y=(2.4)(to power -x),on the same axes and label them properly. 1 solutions Answer 331112 by Alan3354(30993)   on 2011-08-21 10:31:12 (Show Source): You can put this solution on YOUR website! dl the FREE graph software at http://www.padowan.dk ------------- Use Insert, then 2.4^x

Complex_Numbers/483773: Hi. can u help to solve this problem please?? Simplify your answer in the form a+bi: thank you!! 1 solutions Answer 331057 by Alan3354(30993)   on 2011-08-20 23:30:46 (Show Source): You can put this solution on YOUR website! Multiply NUM and DEN by i or by -i

Numeric_Fractions/483780: Please help me with this algebra problem. Thank you. Simplify if possible. Show all work. Write your final answer as a fraction in lowest terms. 24/55 ÷ 39/40 1 solutions Answer 331056 by Alan3354(30993)   on 2011-08-20 23:29:53 (Show Source): You can put this solution on YOUR website! Invert the divisor and multiply.