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Recent problems solved by 'checkley71'

checkley71 answered: 8399 problems
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Exponents-negative-and-fractional/40126: The process or writing a quadratic equation in the form of is called what? 1 solutions Answer 25560 by checkley71(8403)   on 2006-05-31 18:13:57 (Show Source): You can put this solution on YOUR website! (X+A)~2 THE PROCESS TO EXPAND THIS TO A QUADRATIC IS CALLED F O I L (X+A)(X+A) FIRST=X*X OUTER=X*A INNER=A*X & LAST=A*A THUS YOU HAVE X~2+2XA+A~2

Linear-systems/40120: y=10x^2 + x 5x+y=4 1 solutions Answer 25555 by checkley71(8403)   on 2006-05-31 18:00:17 (Show Source): You can put this solution on YOUR website! Y=4-5X THEN 4-5X=10X~2+X OR 10X~2+6X-4=0 OR 5X~2+3X-2=0 OR (5X-2)(X+1)=0 OR 5X=2 OR X=2/5 & X=-1 THEN Y=4-5*2.5 OR Y=2 & Y=4-5(-1) OR Y=9

Quadratic_Equations/40108: This is actually about "unfoiling". Is there a quick and easy way to figure out the binomials when unfoiling. As an example: 2x^2 - 9x + 4. How do I know how to choose the right numbers to factor this into two binomials? Is there a different rule for positive and/or negative numbers. Thanks very much. 1 solutions Answer 25553 by checkley71(8403)   on 2006-05-31 17:52:09 (Show Source): You can put this solution on YOUR website! IF THE FIRST & THIRD NUMBERS ARE + & THE MISSLE NUMBER IS - THEN THE FIRST OR THE THIRD FACTORS MUST BOTH BE NEGATIVE. THUS IN THIS CASE WE HAVE (2X-1)(X-4) OR (-2X+1)(-X+4) IN EITHER CASE WE HAVE X=1/2 & X=4

Percentage-and-ratio-word-problems/39859: hi my name is jennifer im currently attending adult ed and i am studying math level one and im havin alot or problems with word problems and stuff like 4 devided by 1 3 over 7. and wat dose quotient mean?? can you please help me? 1 solutions Answer 25349 by checkley71(8403)   on 2006-05-30 18:12:33 (Show Source): You can put this solution on YOUR website! IF YOU MEAN 4 DIVIDED BY 1 THEN 4/1=4 IF YOU MEAN 3 OVER 7 THEN 3/7=.4285714

Radicals/39893: help! Please show steps, I don't understand! 1 solutions Answer 25346 by checkley71(8403)   on 2006-05-30 18:07:33 (Show Source): You can put this solution on YOUR website! XSQRT18-3SQRT8X~2 OR 3XSQRT2-6XSQRT2 OR (3X-6X)SQRT2 OR -3XSQRT2

Graphs/39894: Please help me with this.... reduce the fraction 1 solutions Answer 25344 by checkley71(8403)   on 2006-05-30 18:04:14 (Show Source): You can put this solution on YOUR website! (5V~2)/(8T~2U~2)

Functions/36389: A=3; B=13 G-A=3 F+G=D C+D+E=B C-D=G B+E=C+D Please solve this for me! 1 solutions Answer 25341 by checkley71(8403)   on 2006-05-30 18:00:26 (Show Source): You can put this solution on YOUR website! G-A=3 OR G-3=3 OR G=6 C+D+E=B & B+E=C+D OR C+D=B-E & C+D=B+E THEREFORE E=0 C+D=13 & C-D=6 THEN 2C=19 OR C=19/2 THEN D=13-19/2 OR D=7/2 F+G=7/2 OR F+6=7/2 OR F=7/2-6 OR F=-5/2 PROOF A=3 B=13 C=19/2 D=7/2 E=0 F=-19/2 G=6 G-A=3 OR 6-3=3 F+G=D OR -5/2+6=7/2 OR 7/2=7/2 C+D+E=B OR 19/2+7/2+0=13 OR 26/2=13 OR 13=13 C-D=G OR -19/2-(-7/2)=6 OR -19/2+7/2=6 OR 12/2=6 OR 6=6 B+E=C+D OR 13+0=19/2+7/2 OR 13=13

Surface-area/39896: This question is from textbook Beginning Algebra If the sides of a square are decreased by 2 cm, the area is decreased by 36 cm^2. What were the dimensions of the original square? 1 solutions Answer 25333 by checkley71(8403)   on 2006-05-30 17:26:00 (Show Source): You can put this solution on YOUR website! X~2=(X-2)~2+36 OR X~2=X~2-4X+4+36 OR -4X=-40 OR X=10 PROOF 10*10=100 SQ CM 8*8=64 SQ CM 100-64=36 THE REDUCTION IN AREA.

Graphs/39898: needing help... divide 40x/64x by 5x/8y 1 solutions Answer 25330 by checkley71(8403)   on 2006-05-30 17:22:23 (Show Source): You can put this solution on YOUR website! (40X/64X)/5X/8Y OR 40X*8Y/64X*5X OR 320XY/320X~2 OR Y/X I'LL TRY ANOTHER APPROACH 40X/64X=40/64=5/8 NOW TO DIVIDE THIS FRACTION BY ANOTHER FRACTION THE SECOND FRACTION MUST BE INVERTED OR 8Y/5X NOW YOU NEED TO MULIPLY THE TWO FRACTION (5/8)/(8Y/5X) THE 8s CANCEL & THE 5s CANCEL LEAVING THE FRACTION Y/X

Graphs/39897: please help... multiply by 1 solutions Answer 25329 by checkley71(8403)   on 2006-05-30 17:18:30 (Show Source): You can put this solution on YOUR website! 6XY~2Z~2/6XY~4Z~4 OR 1/Y~2Z~2

Travel_Word_Problems/39900: Towering antennae. A guy wire of length 50 feet is attached to the ground and to the top of an antenna. The height of the antenna is 10 feet larger than the distance from the base of the antenna to the point where the guy wire is attached to the ground. What is the height of the antenna? 1 solutions Answer 25328 by checkley71(8403)   on 2006-05-30 17:14:27 (Show Source): You can put this solution on YOUR website! X~2+(X+10)~2=50~2 OE X~2+X~2+20X+100=2500 OR 2X~2+20X-2400=0 OR X~2+10X-1200=0 OR (X+40)(X-30)=0 OR X=30 FEET FROM THE BASE TO THE GUY WIRE & 10+30=40 FEET FOR THE HEIGHT OF THE ANTENNA.

Graphs/39901: help!!!!! divide by 1 solutions Answer 25327 by checkley71(8403)   on 2006-05-30 17:05:40 (Show Source): You can put this solution on YOUR website! THE RULE FOR DIVIDING FRACTIONS IS "INVERT THE SECOND TERM (DENOMINATOR) & MULTIPLY THUS (M~2N~3/P~3)((N~2/MP) OR (M~2N~5)/(MP~4)OR MN~5/P~4

Polynomials-and-rational-expressions/39904: This question is from textbook Beginning Algebra Rewrite the middle term as the sum of two terms and then factor completely. 12w^2 + 19w + 4 1 solutions Answer 25326 by checkley71(8403)   on 2006-05-30 17:00:28 (Show Source): You can put this solution on YOUR website! (4w+1)(3w+4)=0 or w=-1/4 & w=-4/3

Polynomials-and-rational-expressions/39902: What is the completely factored form of 25x^4-4x^2? 1 solutions Answer 25325 by checkley71(8403)   on 2006-05-30 16:57:08 (Show Source): You can put this solution on YOUR website! x~2(5x-2)(5x+2)

Quadratic_Equations/39903: This question is from textbook Beginning Algebra Solve the following quadratic equation. 4x^2 =13x + 12 1 solutions Answer 25324 by checkley71(8403)   on 2006-05-30 16:53:43 (Show Source): You can put this solution on YOUR website! (4x+3)(x-4)=0 or x=-3/4 & x=4

expressions/39782: HOW56 CAN I SOLVE FOR THE X ON THIS THANKS ' I BY ACCIDENT WROTE DOWN THE WRONG PROBLEM TOTALLY DIFFERENT. I'M LOST THANK YOU -4 (2x -3) -8x + 5 1 solutions Answer 25202 by checkley71(8403)   on 2006-05-29 18:50:53 (Show Source): You can put this solution on YOUR website! -4(2X-3)-8X+5 OR -8X+12-8X+5 OR -16X+17 IS THIS =0? IF SO THEN -16X+17=0 OR -16X=-17 OR X=17/16

Travel_Word_Problems/39780: driving from tilsa to detriot, jeff averaged 50mph. he figured that if he had average 60mph, his driving time would have decreased 3hrs. how far is it from tulsa to detriot? 1 solutions Answer 25201 by checkley71(8403)   on 2006-05-29 18:47:03 (Show Source): You can put this solution on YOUR website! 50*X=60*(X-3) OR 50X=60X-180 OR 10X=180 OR X=18 OR 50*18=900 MILES 60(18-3) OR 60*15=900 MILES IF IT TAKES X HOURS TO GET TO DETROIT @ 50 MILES PER HOUR THAN THE DISTANCE IS 50X IF IT TAKES X-3 HOURS @ 60 MILES PER HOUR TO GET TO DETROIT THAN THE DISTANCE ID 60(X-3) SEEING AS THE DISTANCES ARE THE SAME WE SET THESE TWO FACT EQUAL THUS WE HAVE 50*X=60(X-3) OR 50X=60X-180 OR 50X-60X=-180 OR -10X=-180 OR 10X=180 OR X=180/10 OR X=18 HOURS TO DRIVE FROM TULSA TO DETROIT @ 50 MILES PER HOUR OR 18*50=900 60 MILES PER HOUR ONLY TAKES (18-3) OR 15 HOURS THUS 60*15=900 MILES

Graphs/39777: show the graph of 5x+7y=35 1 solutions Answer 25200 by checkley71(8403)   on 2006-05-29 18:18:22 (Show Source): You can put this solution on YOUR website! 7Y=-5X+35 OR Y=-5/7X+5 OR A LINE WITH SLOPE -5/7 & Y INTERCEPT OF 7

Linear-systems/39483: This question is from textbook Algebra 1 please help me with these problems: 6x+4=-3(X-3) 5/6x-3=x/3+4 11x-3(2x-7)=5x-3+2x x/7-x/5=1/7 2(x-5)+3=15(x+2)-37 1 solutions Answer 25199 by checkley71(8403)   on 2006-05-29 18:16:09 (Show Source): You can put this solution on YOUR website! 6X=4=-3(X-3) OR 6X+4=-3X+9 OR 9X=5 OR X=5/9

Radicals/39778: Please show me how to work this. x+5/-1 What values for x must be excluded? The answer is none, but I cant figure it out! 1 solutions Answer 25198 by checkley71(8403)   on 2006-05-29 18:09:38 (Show Source): You can put this solution on YOUR website! X+(5/-1) OR X-5 X OBVIOUSLY CAN TAKE ANY VALUE.

Square-cubic-other-roots/39561: Explain the process and show EACH step in the process of simplifying the following problems: a. sqrt(48m^5/81) b. sqrt50 + sqrt32 - 2(sqrt8) c. 3(sqrt12) - 5(sqrt48) 1 solutions Answer 25197 by checkley71(8403)   on 2006-05-29 18:07:05 (Show Source): You can put this solution on YOUR website! SQRT(48M~5/81) OR SQRT(4*4*3*M~2*M~2*M/9*9) OR (4M~2/9)SQRT3M SQRT50+SQRT32-2(SQERT8) OR SQRT5*5*2+SQRT4*4*2-2(SQRT2*2*2)OR 5SQRT2+4SQRT2-2*2SQRT2 OR (5+4-4)SQRT2 OR 5SQRT2 3(SQRT12)-5(SQRT48) OR 3(SQRT2*2*3)-5(SQRT4*4*3) OR 3*2(SQRT3)-5*4(SQRT3) OR 6SQRT3-20SQRT3 OR -14SQRT3

Geometry_Word_Problems/39760: The strength of a steel bar is proporitional to its cross-sectional area. A steel bar is 3/4 in. wide and 1/2 in. thick. How many times stronger tyhan this bar is a steel bar thet is 1.5 in. wide and 1.5 in. thick? 1 solutions Answer 25196 by checkley71(8403)   on 2006-05-29 17:51:53 (Show Source): You can put this solution on YOUR website! 3/4*1/2=.375 1.5*1.5=2.25 THEREFORE THE BIGGER BAR IS 2.25/.375=6 TIMES STRONGER

Distributive-associative-commutative-properties/39765: Could someone help me solve this problem? Find the circumference of 3.75 ft. Use 3.14 for pie and round your answer to one decimal place. Thanks! Sher 1 solutions Answer 25195 by checkley71(8403)   on 2006-05-29 17:48:35 (Show Source): You can put this solution on YOUR website! IS THE 3.75 FEET A RADIUS, A DIAMETER OR THE CIRCUMFERANCE? IF THE CIRCUMFERANCE WHAT DO YOU WANT? IF CIRCUMFERANCE THEN 3.75=2PIR OR 3.75=2*3.14*R OR 3.75=6.28R OR R=3.75/6.28 OR R=.6

Human-and-algebraic-language/39736: -4 (2x -3) = -8x + 5 HOW CAN I SOLVE FOR THE X ON THIS THANKS 1 solutions Answer 25194 by checkley71(8403)   on 2006-05-29 16:59:27 (Show Source): You can put this solution on YOUR website! -4(2X-3)=-8X+5 OR -8X+12=-8X+5 OR 12=5 NOT A VALID EQUATION!!!!!! ARE YOU SURE YOU COPIED IT CORRECTLY?

Graphs/39742: Need help!! Rewrite the equation 2x+4y+2=3y+5 in general form. 1 solutions Answer 25193 by checkley71(8403)   on 2006-05-29 16:56:10 (Show Source): You can put this solution on YOUR website! 2X+4Y+2=3Y+5 OR 2X+Y=3

Equations/39753: 2A/3=8+4A 1 solutions Answer 25192 by checkley71(8403)   on 2006-05-29 16:54:14 (Show Source): You can put this solution on YOUR website! 2A/3=8+4A OR 2A=3(8+4A) OR 2A=24+12A OR -10A=24 OR A=-24/10 OR X=-2.4

Exponents/39761: please help...... simplify the expression . 1 solutions Answer 25191 by checkley71(8403)   on 2006-05-29 16:48:59 (Show Source): You can put this solution on YOUR website! (6X~6)/(9X~8)

Linear-equations/39773: please help me with this question, Is the slope of a line that falls from left to right positive or negative? 1 solutions Answer 25190 by checkley71(8403)   on 2006-05-29 16:42:33 (Show Source): You can put this solution on YOUR website! A LINE THAT FALLS LEFT TO RIGHT TOP TO BOTTOM HAS A NEGATIVE SLOPE.

Equations/39772: Solve each equation for y. y + 1/2 = -1/3 (x + 1/2) ISBN: 13-978-0-07-326862-0 1 solutions Answer 25189 by checkley71(8403)   on 2006-05-29 16:40:53 (Show Source): You can put this solution on YOUR website! Y+1/2=-1/3(X+1/2) OR Y=-1/2-(1/3)X-1/6 OR Y=-2/3-(1/3)X

decimal-numbers/39762: Which of the following fractions have terminating decimals and which have repeating decimals. The fractions are: 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11, 1/12 Show Decimal Form " Which are Terminate and Prime Factorization of the Denominator I am very lost on this. Thanks if you can help Sher 1 solutions Answer 25188 by checkley71(8403)   on 2006-05-29 16:35:35 (Show Source): You can put this solution on YOUR website! TO FIND THE DECIMAL EQUIVALENT OF A FRACTION JUST DIVIDE THE NUMERATOR BY THE DENOMINATOR THUS 1/2=.5 1/3=.33 1/3, 1/4=.25,1/5=.20,1/6=.16 2/3,1/7=.14 2/7,1/8=.125, 1/9=.11 1/9, 1/10=.1,1/11=.09 1/11,1/12=.08 1/3

percentage/39767: I had asked this question yesterday but put in 12.4 should have been 12.5 When you showed the answer for 180.79 was that just for one month and should it been multiplied by 12 for a year? The question is what simple interest will you pay on a loan of $1,458 at 12.5% for 1 year? Thanks! Sher 1 solutions Answer 25187 by checkley71(8403)   on 2006-05-29 16:29:50 (Show Source): You can put this solution on YOUR website! I=PRT OR I=1458*.125*1 OR I=182.5 THIS IS THE YEARLY INTEREST.