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Recent problems solved by 'user_dude2008'

user_dude2008 answered: 1858 problems
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Polynomials-and-rational-expressions/316690: factor by regrouping 10x^3-18x^2+5x-9 1 solutions Answer 226629 by user_dude2008(1861)   on 2010-06-22 19:36:12 (Show Source): You can put this solution on YOUR website! 10x^3-18x^2+5x-9 2x^2(5x-9)+1(5x-9) (2x^2+1)(5x-9)

Travel_Word_Problems/316693: find the slope intercept form of the equation of a line with the given slope that passes through the given point. slope = 0 through (0,6) 1 solutions Answer 226628 by user_dude2008(1861)   on 2010-06-22 19:35:33 (Show Source): You can put this solution on YOUR website! equation: y=6

Travel_Word_Problems/316695: find the slope intercept form of the equation of a line with the given slope that passes through the given point. find the x and y intercept. (-3, 0) (-3, -5) 1 solutions Answer 226627 by user_dude2008(1861)   on 2010-06-22 19:35:11 (Show Source): You can put this solution on YOUR website! equation: x=-3

test/315833: Solve x=y^3-4 for y in the terms of x. 1 solutions Answer 225951 by user_dude2008(1861)   on 2010-06-19 22:22:45 (Show Source): You can put this solution on YOUR website!

real-numbers/315333: rewrite with the lcd: x-4/15, x+2/10 1 solutions Answer 225634 by user_dude2008(1861)   on 2010-06-17 18:32:04 (Show Source): You can put this solution on YOUR website! LCD is 30 x-4/15 ---> 2(x-4)/30=(2x-8)/30 x+2/10 ---> 3(x+2)/30=(3x+6)/30

absolute-value/315115: Martin makes exercise weights. For his 10 pound dumbbells, he guarantees that the actual weight of his dumbbells is withing 0.1 pounds of 10 pounds. Write and solve and equation that describes the minimum and maximum weight of his 10 pound dumbbells. 1 solutions Answer 225621 by user_dude2008(1861)   on 2010-06-17 17:46:45 (Show Source): You can put this solution on YOUR website! solve equation

Expressions-with-variables/315313: Auditions for a play in New York were held with 120 men and women trying out for the lead singer position. If twice the number of men less three times the number of women is equal to 20, how many men auditioned? 1 solutions Answer 225613 by user_dude2008(1861)   on 2010-06-17 17:15:05 (Show Source): You can put this solution on YOUR website! m+w=120 3w-2m=20 2m+2w=240 3w-2m=20 5w=260 w=260/5 w=52 ... 52 women m+w=120 ---> m+52=120 ----> m=68 ... 68 men

Expressions-with-variables/315315: Nick works two jobs to pay for college. He tutors for $15 per hour and also works as a bag boy for $8 per hour. Due to his class and study schedule, Nick is only able to work up to 20 hours per week, but must earn at least $150 per week. If t represents the number of hours Nick tutors and b represents the number of hours he works as a bag boy, which system of inequalities represents this scenario? t + b 20 15t + 8b = 150 t + b 20 15t + 8b 150 t + b 20 15t + 8b 150 None of the systems shown represent this scenario. 1 solutions Answer 225608 by user_dude2008(1861)   on 2010-06-17 17:06:42 (Show Source): You can put this solution on YOUR website! t+b <= 20 15t+8b >= 150

Expressions-with-variables/315314: Trevor's dad decided to get him a cell phone for his birthday. Cell Plus has a plan that costs $27.00 per month plus an additional $0.06 per minute. Cell Best has a plan that costs $30.00 per month plus an additional $0.05 per minute. How many minutes can Trevor talk and both cell plans cost the same amount? 1 solutions Answer 225606 by user_dude2008(1861)   on 2010-06-17 17:05:21 (Show Source): You can put this solution on YOUR website! Cell Plus: y=0.06x+27 Cell Best: y=0.05x+30 0.06x+27=0.05x+30 0.06x-0.05x=30-27 0.01x=3 x=3/(0.01) x=300 cost same amount at 300 minutes.

Sequences-and-series/315310: If today is Monday, and 1234 days passed, what day will it be? 1 solutions Answer 225603 by user_dude2008(1861)   on 2010-06-17 16:53:53 (Show Source): You can put this solution on YOUR website! 1234 mod 7 = 2 .... add 2 days ----> mon goes to wed Answer: day is wednesday

Functions/315308: F(t)=50+6.50*t Is the function but how do I figure out the domain and range for this function? Thank you for your help. 1 solutions Answer 225601 by user_dude2008(1861)   on 2010-06-17 16:52:36 (Show Source): You can put this solution on YOUR website! Domain: all real numbers Range: all real numbers

Expressions-with-variables/315304: can you simplify these questions and show me how you got the answer? 6m+m=? 5y-y=? 7p-6p=? 1 solutions Answer 225599 by user_dude2008(1861)   on 2010-06-17 16:48:05 (Show Source): You can put this solution on YOUR website! 6m+m=7m 5y-y=4y 7p-6p=1p=p

Polynomials-and-rational-expressions/315253: Find all numbers for which the rational expression is undefined -4/23w 1 solutions Answer 225598 by user_dude2008(1861)   on 2010-06-17 16:47:37 (Show Source): You can put this solution on YOUR website! undefined when w=0

Polynomials-and-rational-expressions/315251: simplify by removing factors of 1 w^2-64/8-w 1 solutions Answer 225597 by user_dude2008(1861)   on 2010-06-17 16:46:49 (Show Source): You can put this solution on YOUR website! (w^2-64)/(8-w)=-((w-8)(w+8))/(w-8)=-(w+8)=-w-8 Answer: (w^2-64)/(8-w) = -w-8

Equations/315302: what is two subtracted from a number 1 solutions Answer 225596 by user_dude2008(1861)   on 2010-06-17 16:45:33 (Show Source): You can put this solution on YOUR website! x-2

Polynomials-and-rational-expressions/315250: solve z-7/z+3=1/3 1 solutions Answer 225595 by user_dude2008(1861)   on 2010-06-17 16:45:19 (Show Source): You can put this solution on YOUR website! (z-7)/(z+3)=1/3 3(z-7)=1(z+3) 3z-21=z+3 3z-z=3+21 2z=24 z=12 <----- Answer

Linear-systems/315153: solve the linear equality. Use interval notation to express the solution -7x>=21 1 solutions Answer 225593 by user_dude2008(1861)   on 2010-06-17 16:43:04 (Show Source): You can put this solution on YOUR website! -7x>=21 x<=21/(-7) x<=-3 Answer: (-inf, -3]

Coordinate-system/315128: how many regions that the cartesian coordinate system was divided and what is the name of each region 1 solutions Answer 225591 by user_dude2008(1861)   on 2010-06-17 16:41:55 (Show Source): You can put this solution on YOUR website! 4 regions: quadrant I, quadrant II, quadrant III, quadrant IV

Linear-systems/315300: there are 443 students in a graduating class. there are 103 more girls than boys. how many boys are there? 1 solutions Answer 225590 by user_dude2008(1861)   on 2010-06-17 16:41:22 (Show Source): You can put this solution on YOUR website! b+g=443 g=b+103 b+g=443 b+b+103=443 2b=340 b=170 .... 170 boys g=b+103=273 .... 273 girls

logarithm/315284: transform the second expression into the equivalent logarithmic equation. y=2^-(x-2) x=2^-(y-2) 1 solutions Answer 225589 by user_dude2008(1861)   on 2010-06-17 16:39:39 (Show Source): You can put this solution on YOUR website!

Exponents/315297: HOW DO YOU MAKE A NEGATIVE EXPONENT INTO A POSITIVE EXPONENT AND WRITTEN IN STANDARD FORM USING FRACTIONS. FOR EXAPMLE {}= EXPONENT NEGATIVE POSITIVE STANDARD 6{-2} (1/6){2} 1/36 CAN YOU HELP ME WITH THE FIRST ONE 5{-3} I NEED IT IN POSITIVE AND STANDARD 1 solutions Answer 225587 by user_dude2008(1861)   on 2010-06-17 16:34:23 (Show Source): You can put this solution on YOUR website!

Inequalities/315296: Solve |x/2| + 9 > 13 1 solutions Answer 225585 by user_dude2008(1861)   on 2010-06-17 16:32:10 (Show Source): You can put this solution on YOUR website! |x/2| + 9 > 13 |x/2| > 4 x/2 > 4 .... or .... x/2 < -4 x > 8 .... or .... x < -8

Polynomials-and-rational-expressions/315254: Simplify by removing factor of 1 6m^2+6m/42m^2+36m 1 solutions Answer 225583 by user_dude2008(1861)   on 2010-06-17 16:30:05 (Show Source): You can put this solution on YOUR website!

Triangles/315207: If the perimeter of a triangle is a+b+c, then the perimeter of an isosceles triangle should be 2a+b. If the perimeter of an isosceles triangle equals 14 feet, then 2a+b=14. If we solve for b, then b=14-2a. Possible solutions for the sides of this isosceles triangle suggest that a could be equal to 1,2,3 which would make b equal to 12,10,8 respectively. But sides of these measurement will not yield a triangle of any kind. Can you help me explain why/why not? 1 solutions Answer 225582 by user_dude2008(1861)   on 2010-06-17 16:28:15 (Show Source): You can put this solution on YOUR website! rule: triangle with sides a, b, c must satisfy inequality: a+b > c 1+1=2 < 12 ... triangle not possible 2+2=4 < 10 ... triangle not possible 3+3=6 < 8 ... triangle not possible

Exponential-and-logarithmic-functions/315278: Evaluate the following Radical 16^-3/4 1 solutions Answer 225577 by user_dude2008(1861)   on 2010-06-17 16:24:08 (Show Source): You can put this solution on YOUR website! Answer:

Exponential-and-logarithmic-functions/315277: Evaluate the following radical 8^2/3 1 solutions Answer 225576 by user_dude2008(1861)   on 2010-06-17 16:21:44 (Show Source): You can put this solution on YOUR website! Answer:

Linear-equations/315292: What is the slope of ( 19 , 1.0 ),( 16 , 4.0 ) 1 solutions Answer 225575 by user_dude2008(1861)   on 2010-06-17 16:19:54 (Show Source): You can put this solution on YOUR website! m=(4-1)/(16-19)=3/(-13)=-3/13 slope is -3/13

logarithm/314205: logcm + logcn 1 solutions Answer 224596 by user_dude2008(1861)   on 2010-06-14 13:25:58 (Show Source): You can put this solution on YOUR website!

Trigonometry-basics/314199: evaluate: sin200*cos70+cos200*sin70 a circle with a radius of 6 is inscribed in a square. if a dart is thrrown what is the probability that it lands inside the circle? state the domain that is needed for tanx so that its inverse Arctanx is a function. determine the range of Arctanx 1 solutions Answer 224595 by user_dude2008(1861)   on 2010-06-14 13:08:27 (Show Source): You can put this solution on YOUR website! sin200*cos70+cos200*sin70 = sin(200+70) = sin(270) = -1

Inequalities/312988: 5x - 6 < 2 ( 5- 4x) 1 solutions Answer 223832 by user_dude2008(1861)   on 2010-06-09 21:02:38 (Show Source): You can put this solution on YOUR website! 5x - 6 < 2 ( 5- 4x) 5x - 6 < 10 - 8x 5x + 8x < 10 + 6 13x < 16 x < 16/13

Finance/312598: Please help me solve this Algebra in Finance: A person earns $100 a week for 15 weeks. He puts $35.75 into a savings account each of these weeks and spends the rest. How much does he spends during the 15 weeks? 1 solutions Answer 223482 by user_dude2008(1861)   on 2010-06-08 18:33:34 (Show Source): You can put this solution on YOUR website! 100-35.75=64.25 spends $64.25 per week 64.25*15=963.75 Answer: 963.75