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# Recent problems solved by 'user_dude2008'

 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 -4/23w1 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-w1 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 number1 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=1/31 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>=211 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 region1 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):  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 STANDARD1 solutions Answer 225587 by user_dude2008(1861) on 2010-06-17 16:34:23 (Show Source):  Inequalities/315296: Solve |x/2| + 9 > 131 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+36m1 solutions Answer 225583 by user_dude2008(1861) on 2010-06-17 16:30:05 (Show Source):  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^-3/41 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 8^2/31 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 + logcn1 solutions Answer 224596 by user_dude2008(1861) on 2010-06-14 13:25:58 (Show Source):  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 Arctanx1 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