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Recent problems solved by 'checkley77'

checkley77 answered: 12560 problems
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Percentage-and-ratio-word-problems/244925: out of 20 attempts, a basketball player scored 8 times. What percent of his chances did he score? 1 solutions Answer 179087 by checkley77(12569)   on 2009-12-02 10:39:21 (Show Source): You can put this solution on YOUR website! 8/20=2/5=.4 or 40% chance of scoring.

Linear_Equations_And_Systems_Word_Problems/244926: Soup ordinarily priced at 2 cans for 33 cents may be purchased in lots of one dozen for $1.74. What is the saving per can when purchased this way? 1 solutions Answer 179086 by checkley77(12569)   on 2009-12-02 10:37:58 (Show Source): You can put this solution on YOUR website! .33/2=.165 per can 1.74/12=.145 per can. .165-.145=$.02 is the savings per can when buying by the dozen.

Miscellaneous_Word_Problems/244927: Mary worked a total of 16 1/2 hours during 5 days of the past week. what was her average work day? 1 solutions Answer 179084 by checkley77(12569)   on 2009-12-02 10:34:35 (Show Source): You can put this solution on YOUR website! 16.5/5=3.3 hours per day is the average.

Square-cubic-other-roots/244933: write the answer the three decimal places. square root of 91 1 solutions Answer 179082 by checkley77(12569)   on 2009-12-02 10:31:57 (Show Source): You can put this solution on YOUR website! square root of 91=9.539 ans.

Square-cubic-other-roots/244937: Simplify square root of 28 1 solutions Answer 179080 by checkley77(12569)   on 2009-12-02 10:30:22 (Show Source): You can put this solution on YOUR website! square root of 28 sqrt7*4 2sqrt7 ans.

Exponents/244938: simplify square root of 192x^2 1 solutions Answer 179079 by checkley77(12569)   on 2009-12-02 10:29:18 (Show Source): You can put this solution on YOUR website! square root of 192x^2 xsqrt64*3 8xsqrt3 ans.

Square-cubic-other-roots/244934: classify the number as rational, irrational, or immaginary. sqauare root of - 25 1 solutions Answer 179078 by checkley77(12569)   on 2009-12-02 10:26:17 (Show Source): You can put this solution on YOUR website! sqauare root of - 25=5i is an immaginary number.

Triangles/244734: How do i find the degree of a triangle when the degrees given are (2x+2)degrees, (2x+1)degrees, and (3x-2)degrees? 1 solutions Answer 178944 by checkley77(12569)   on 2009-12-01 20:22:19 (Show Source): You can put this solution on YOUR website! (2x+2)degrees, (2x+1)degrees, and (3x-2)degrees? 2x+2+2x+1+3x-2=180 7x=180-2-1+2 7x=179 x=179/7 x=25.57143 2*25.57143+2=51.143+2=53.143 degrees. 2*25.57143+1=51.143+1=52.143 3*25.57143-2=76.714-2=74.714 Proof: 53.143+52.143+74.714=180 180=180

Proportions/240833: Hi, I need help with this proportion. 4x/3x = 6x/4.5x Solve for x. 1 solutions Answer 178938 by checkley77(12569)   on 2009-12-01 20:01:00 (Show Source): You can put this solution on YOUR website! 4x/3x = 6x/4.5x CROSS MULTIPLY 3*6X^2=4*4.5X^2 18X^2=18X^2 X^2=18X^2/18 X^2=X^2 INFINITE SOLUTIONS FOR X.

Polynomials-and-rational-expressions/244647: simplify: x^2-25/5x+20 divided by x+4/x-5 1 solutions Answer 178935 by checkley77(12569)   on 2009-12-01 19:54:00 (Show Source): You can put this solution on YOUR website! x^2-25/5x+20 divided by x+4/x-5 FACTOR THE NUMERATOR. [(X+5)(X-5)/5(X+4)]/[(X+4)/(X-5)] INVERT THE DENOMINATOR & MULTIPLY. [(X+5)(X-5)(X-5)] ANS.

Equations/244673: I need to know what the answer to this equation is? x^-5 -----= y^-6 1 solutions Answer 178933 by checkley77(12569)   on 2009-12-01 19:39:37 (Show Source): You can put this solution on YOUR website! x^-5 -----= x^(-5+6)=x^1=x ans. y^-6

Coordinate-system/244695: How do you find the scale factor of something? 1 solutions Answer 178932 by checkley77(12569)   on 2009-12-01 19:36:07 (Show Source): You can put this solution on YOUR website! Scaling is the same as a ratio. If you have a scale of 1 in. = 2 ft. 1in:24in or 1/24 is the scale or ratio. Example: An 80 ft. tree casts a 120 ft. shadow. Another tree casts a 200 ft. shadow at the same time. What is the height of the second tree. 80:100=x:200 cross multiply 100x=80*200 100x=16,000 x=16,000/100 x=160 ft. tall.

Linear-equations/244697: Graph the equation: y - 6 = 3(x-4) Please and thank you! 1 solutions Answer 178925 by checkley77(12569)   on 2009-12-01 19:23:00 (Show Source): You can put this solution on YOUR website! y - 6 = 3(x-4) y-6=3x-12 y=3x-12+6 y=3x-6 ans. (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 3x -6).

absolute-value/244698: what is the answer to 20 - 4/5x >16 1 solutions Answer 178923 by checkley77(12569)   on 2009-12-01 19:20:14 (Show Source): You can put this solution on YOUR website! 20 - 4/5x >16 -4x/5>16-20 -4x/5>-4 cross multiply -4x>-4*5 -4x>-20 divide by -4 x<-20/-4 Note: the > sign changes to a < sign when dividing by a negative value. x<5 ans. Proof: Let x=4.9 20-4/5*4.9>16 20-19.6/5>16 -19.6/5>16-20 -19.6/5>-4 -3.92>-4

Polynomials-and-rational-expressions/244702: Can I get some help? Factor out the GCF t(9 - s) + 10(9 - s) 1 solutions Answer 178921 by checkley77(12569)   on 2009-12-01 19:14:46 (Show Source): You can put this solution on YOUR website! t(9 - s) + 10(9 - s) (t+10)(9-s) ans.

Miscellaneous_Word_Problems/244703: what is long division four 775 divided by 68 1 solutions Answer 178920 by checkley77(12569)   on 2009-12-01 19:12:38 (Show Source): You can put this solution on YOUR website! ****11 REMAINDER 27/68 ***_______________________ 68|775 ***68 ***---- ****95 ****68 ****--- ****27

Graphs/244707: HOW DO YOU WRITE 3X-8Y=24, 4X+2Y=-10, 3X-5Y=-25 IN A SLOPE INTERCEPT FORM? 1 solutions Answer 178919 by checkley77(12569)   on 2009-12-01 19:08:11 (Show Source): You can put this solution on YOUR website! 3X-8Y=24 SUBTRACT 3X -8Y=-3X+24 DIVIDE BY -8 Y=-3X/-8+24/-8 REDUCE FRACTIONS. Y=3X/8-3 ANS. --------------------- 4X+2Y=-10 2Y=-4X-10 Y=-4X/2-10/2 Y=-2X-5 ANS. --------------------- 3X-5Y=-25 -5Y=-3X-25 Y=-3X/-5-25/-5 Y=3X/5+5 ANS.

Linear_Algebra/244601: The primeter of a rectangle is twice the sum of its length and its width. The perimeter is 46 meters and its length is 2 meters more than twice its width. What is its length? 1 solutions Answer 178917 by checkley77(12569)   on 2009-12-01 19:03:38 (Show Source): You can put this solution on YOUR website! 2L+2W=46 L=2W+2 2(2W+2)+2W=46 4W+4+2W=46 6W=46-4 6W=42 W=42/6 W=7 ANS. L=2*7+2=14+2=16 ANS. FOR THE LENGTH. PROOF: 2*16+2*7=46 32+14=36 36=36

Exponents/244612: how would you Determine whether each triangle is a right triangle. 28. c=34,a=16,b=30 1 solutions Answer 178915 by checkley77(12569)   on 2009-12-01 18:55:27 (Show Source): You can put this solution on YOUR website! a^2+b^2=c^2 where c is the longest (hypotenuse) side. 16^2+30^2=34^2 256+900=1,156 1,156=1,156 this is a right triangle.

Problems-with-consecutive-odd-even-integers/244613: write a variable expression for the word phrase. word phrase: the square of a, increase by the sun of twice a and 3 1 solutions Answer 178914 by checkley77(12569)   on 2009-12-01 18:45:28 (Show Source): You can put this solution on YOUR website! a^2+2a+3 ans.

Rectangles/244615: what is the width of rectangle with a perimeter of 70 ft if its lenghth is 1 foot 1 solutions Answer 178913 by checkley77(12569)   on 2009-12-01 18:43:58 (Show Source): You can put this solution on YOUR website! 2L+2W=70 2*1+2W=70 2+2W=70 2W=70-2 2W=68 W=68/2 W=34 ANS. FOR THE WIDTH. PROOF: 2*1+2*34=70 2+68=70 70=70

Problems-with-consecutive-odd-even-integers/244619: together jack and jill fetched 20 pails of water. twice jills psils, minus jacks pails equals 19. find the number of pails each fetched. use the five step solution with 2 variables.) check: please help me !!!! 1 solutions Answer 178911 by checkley77(12569)   on 2009-12-01 18:41:45 (Show Source): You can put this solution on YOUR website! X+Y=20 2X-Y=19 ADD ------------------- 3X=39 X=39/3 X=13 PAILS FOR JILL'S PAILS. 13+Y=20 Y=20-13 Y=7 JACK'S PAILS. PROOF 2*13-7=19 26-7=19 19=19

Linear-equations/244633: If the distance between the point (8,7) and (3,y) is 13units.Find y How can I find why if they gave me any numbers in order to find y? Please show me how to solve this problem so if I run into it again I know how to do it 1 solutions Answer 178909 by checkley77(12569)   on 2009-12-01 18:37:13 (Show Source): You can put this solution on YOUR website! D=SQRT[(Y2-Y1)^2+(X2-X1)^2]] 13=SQRT[(Y-7)^2+(3-8)^2] 13=SQRT[Y^2-14Y+49-5^2] 13=SQRT[Y^2-14Y+49+25] 13=SQRT[Y^2-14Y+74] 13^2=Y^2-14Y+74 169=Y^2-14Y+74 Y^2-14Y+74-169=0 Y^2-14Y-95 (Y-19)(Y+5)=0 Y-19=0 Y=19 ANS. Y+5=0 Y=-5 ANS.

Rational-functions/244659: what is the sum of radical sign 18 and 6 radical sign 2? 1 solutions Answer 178898 by checkley77(12569)   on 2009-12-01 18:14:28 (Show Source): You can put this solution on YOUR website! SQRT18+6SQRT2 SQRT(9*2)+6SQRT2 3SQRT2+6SQRT2 9SQRT2 ANS.

Angles/244664: What is the measure of the complement of a 82 degree angle 1 solutions Answer 178897 by checkley77(12569)   on 2009-12-01 18:12:30 (Show Source): You can put this solution on YOUR website! 90-82=8 DEGREES IS THE ANS. FOR THE COMPLEMENT.

Functions/244635: Find the center and the radius of the circle described by the equation x2+y2+8x-2y+15=0 How can I find the answer to this problem? 1 solutions Answer 178894 by checkley77(12569)   on 2009-12-01 18:08:19 (Show Source): You can put this solution on YOUR website! x2+y2+8x-2y+15=0 X^2+8X(+16)+Y^2-2Y+1)=15+16+1 (X+4)^2+(Y-1)^2=SQRT32 X+4=0 X=-4 Y-1=0 Y=1 (-4,0) IS THE CENTER. RADIUS=SQRT32=5.6569

Linear_Equations_And_Systems_Word_Problems/244643: David and his sister are 24 miles apart. They start biking toward one another. David rides at a rate of 8 mph and his sister rides at a rate of 12 miles per hour. How long before they meet? How far will each have traveled? 1 solutions Answer 178880 by checkley77(12569)   on 2009-12-01 17:53:20 (Show Source): You can put this solution on YOUR website! D=RT 24=(8+12)T 24=20T T=24/20 T=6/5 T=1.2 HOURS THEY WILL MEET. 8*1.2=9.6 MILES FOR THE SISTER. 12*1.2=14.4 MILES FOR DAVID. PROOF: 9.6+14.4=24 24=24

percentage/244645: Mr. Hernandez had to interview a total of 63 households in his assignment. He has already finished 28. What percentage of the households in his assignments has he finished? Round your answer to the nearest tenth of a percent. The answer is 44.4%. I need to know how to figure this out. 1 solutions Answer 178875 by checkley77(12569)   on 2009-12-01 17:49:09 (Show Source): You can put this solution on YOUR website! 28/63=4/9=44.4 or 44.4% ans.

absolute-value/244656: I really need this extra credit but is so hard and I have no idea how to do it heres the problem: The Franklin family consists of 4 people. It costs %15.25 per person each week for groceries. If groceries cost 3% more this month compared to last month, then find the total cost for groceries this month. 1 solutions Answer 178871 by checkley77(12569)   on 2009-12-01 17:44:08 (Show Source): You can put this solution on YOUR website! (15.25*4*4.3)1.03=262.30=$270.17 is the increased grocery bill for the 4 people for 4.3 weeks.

Graphs/244451: what is the answer x+y=5 and x-y=-6 this lesson is chapter 4.3 graphing by intercepts i need help please&thank you i am in the 9th grade in algebra 1 1 solutions Answer 178818 by checkley77(12569)   on 2009-12-01 10:47:11 (Show Source): You can put this solution on YOUR website! The line equation form is Y=mX+b where m=slope & b=Y intercept. x+y=5 y=-x+5 (red line) x-y=-6 -y=-x-6 y=x+6 (green line) (graph 300x300 pixels, x from -6 to 8, y from -6 to 8, of TWO functions -x +5 and x +6).

Square-cubic-other-roots/244484: What is the square root of 4x squared+ 4x+ 1? 1 solutions Answer 178817 by checkley77(12569)   on 2009-12-01 10:34:31 (Show Source): You can put this solution on YOUR website! 4x^2+4x+1 (2x+1)^2 ans.