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Inequalities/230521: solve -2x > 1/9 1 solutions Answer 170692 by rfer(12657)   on 2009-10-22 23:20:51 (Show Source): You can put this solution on YOUR website! -2x>1/9 x>(1/9)/(-2/1) x>1/9*-1/2 x>-1/18

Travel_Word_Problems/230453: an airplane is travling 2500 miles at 600 mph how long does it take to arrive? 1 solutions Answer 170691 by rfer(12657)   on 2009-10-22 23:16:39 (Show Source): You can put this solution on YOUR website! t=D/r t=2500/600 t=4.167 hrs=4 hrs 10 min

Linear-systems/230500: For what values of x is the inequality 3x-5x>8 true? 1 solutions Answer 170689 by rfer(12657)   on 2009-10-22 23:06:56 (Show Source): You can put this solution on YOUR website! 3x-5x>8 -2x>8 x<-4

Linear-systems/230499: Solve the following system of equations for x and y 3x+5y=21 2x-y=1 1 solutions Answer 170688 by rfer(12657)   on 2009-10-22 23:02:37 (Show Source): You can put this solution on YOUR website! 3x+5y=21 2x-y=1, y=2x-1 -------------------- 3x+5(2x-1)=21 3x+10x-5=21 13x=26 x=2 ----------------- 2(2)-y=1 4-y=1 -y=-3 y=3 -------------------- proof 3(2)+5(3)=21 6+15=21

Linear_Equations_And_Systems_Word_Problems/230514: In triangle ABC, the measure of angle B is 2 degrees more than three times the measure of angle A. The measure of angle C is 8 degrees more than the measure of angle A. Find the angle measures. 1 solutions Answer 170687 by rfer(12657)   on 2009-10-22 22:50:41 (Show Source): You can put this solution on YOUR website! a+3a+2+a+8=180 5a+10=180 5a=170 a=34 degrees b=3a+2=104 degrees c=a+8=42 degrees

Linear_Equations_And_Systems_Word_Problems/230515: In triangle PQR, the measure of angle Q is three times the measure of angle P. The measure of angle R is 30 degrees greater than the measure of angle P. Find the angle measures. 1 solutions Answer 170686 by rfer(12657)   on 2009-10-22 22:46:22 (Show Source): You can put this solution on YOUR website! 3p+p+p+30=180 5p=150 p=30 degrees q=3p=90 degrees r=p+30=60 degrees

Equations/230406: How do I solve this equation, please show steps. 4x - 5(3x + 10) = 126 I've tried distrubuting 5 to 3x and 10 to get 15x + 50. So then my equation is 4x - 15 + 50. So I add 15 to itself crossing it out, then I add it to 50 which is 65. Im stuck on this part I dont know what to do. 1 solutions Answer 170620 by rfer(12657)   on 2009-10-22 19:34:56 (Show Source): You can put this solution on YOUR website! 4x-5(3x+10)=126 4x-15x-50=126 add 50 and combine like quanities -11x=176 divide by -11 x=-16

Probability-and-statistics/230405: For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 1,112; 1,245; 1,361; 1,372; 1,472 1 solutions Answer 170615 by rfer(12657)   on 2009-10-22 19:30:48 (Show Source): You can put this solution on YOUR website! 5/8

Distributive-associative-commutative-properties/230393: please solve this expression: 10x-3(7-2x)+18 1 solutions Answer 170613 by rfer(12657)   on 2009-10-22 19:29:49 (Show Source): You can put this solution on YOUR website! 10x-3(7-23x)+8 10x-21+6x+18 16x-3

Linear-equations/230362: Find the slope- intercept equation of the line that has given characteristics slope 7.7 and y-intercept ( 0,-5). The slope-intercept equation is y= I came up with y= -2 am I close 1 solutions Answer 170608 by rfer(12657)   on 2009-10-22 19:19:53 (Show Source): You can put this solution on YOUR website! your given everything you need y=mx+b m=slope b= y int y=7.7x-5

Pythagorean-theorem/230391: does a right triangle with the dimensions of 8cm,9cm,and 12cm exist? 1 solutions Answer 170603 by rfer(12657)   on 2009-10-22 19:13:26 (Show Source): You can put this solution on YOUR website! yes with slight error 12.04 not 12

Exponents-negative-and-fractional/230388: -3.6 + x over 3 = 3.2 1 solutions Answer 170600 by rfer(12657)   on 2009-10-22 19:10:46 (Show Source): You can put this solution on YOUR website! -3.6+x/3=3.2 x/3=6.8 x=6.8*3 x=20.4

Exponents-negative-and-fractional/230370: 2 5/8 x 4/7 x 12 1 solutions Answer 170599 by rfer(12657)   on 2009-10-22 19:07:35 (Show Source): You can put this solution on YOUR website! 2 5/8*4/7*12 21/8*4/7*12/1 1008/56=18

Linear-equations/230379: find the slope and the y-intecept f(x)= -9x-7. The slope is_______ and the y-intecept is (0, ___) I came up with the slope is 2 and the y-intecept is (0, 16) am I close 1 solutions Answer 170598 by rfer(12657)   on 2009-10-22 19:04:12 (Show Source): You can put this solution on YOUR website! y=mx+b m=slope b=y int m=-9 b=-7, (0,-7)

Exponential-and-logarithmic-functions/230266: b=+-0.5^1/5730 b=0.999879 I don't understand how they got 0.999879 from the first line. 1 solutions Answer 170572 by rfer(12657)   on 2009-10-22 18:13:27 (Show Source): You can put this solution on YOUR website! first solve the fraction it =0.00017452 the take .5 to that power the answer is b=0.999879

Numeric_Fractions/230351: when you get done simplifying a fraction, and it turns out inproper what do you 1 solutions Answer 170569 by rfer(12657)   on 2009-10-22 18:07:09 (Show Source): You can put this solution on YOUR website! reduce to a mixed number divide numerator by denominator

Triangles/230346: How do you find the perimeter of a right triangle when all they give me is that one angle equals 60 degrees and the hypotnuse is 48 cm? Thanks for your time 1 solutions Answer 170568 by rfer(12657)   on 2009-10-22 18:06:00 (Show Source): You can put this solution on YOUR website! cosB=a/c 0.5=a/48 0.5*48=a a=24 ------------ cosA=b/c 0.866=b/48 41.6=b ------------- P=41.6+48+24 P=113.6 cm

Triangles/230348: The area of a triangle is 102 m 2 . The base of the triangle is 17 m. What is the height of the triangle? 1 solutions Answer 170563 by rfer(12657)   on 2009-10-22 17:54:26 (Show Source): You can put this solution on YOUR website! A=.5*b*h h=A/.5b h=102/.5*17 h=102/8.5 h=12 m

Linear_Algebra/230349: C=5/9(F-32)for F. Solve the formula for the given variable 1 solutions Answer 170562 by rfer(12657)   on 2009-10-22 17:52:21 (Show Source): You can put this solution on YOUR website! F=9/5(C+32)

Inequalities/230343: Please help in solving 3m-8>-30m+5m I keep getting m > 4.3 1 solutions Answer 170560 by rfer(12657)   on 2009-10-22 17:50:12 (Show Source): You can put this solution on YOUR website! 3m-8>-30m+5m 3m-8>-25m -8>-28m -8/-28>m 0.28571>m

Money_Word_Problems/230261: an account offers 4.5% interest compoundd annually. if you deposited $6000 in the account, what would be the account balance at the end of 15 years? 1 solutions Answer 170558 by rfer(12657)   on 2009-10-22 17:45:35 (Show Source): You can put this solution on YOUR website! A=P(1+r)^15 A=6000(1.045)^15 A=6000(1.935282443) A=$11611.69

Coordinate-system/230329: slope: the problem deals with y2-y1/x2-x1. how problem ask me to solve (0,0),(3,1)?can you show me how to solve it. Thank You 1 solutions Answer 170553 by rfer(12657)   on 2009-10-22 17:35:18 (Show Source): You can put this solution on YOUR website! it becomes 1-0/3-0 1/3=slope rise over run

Exponents/230341: please solve: 1 solutions Answer 170551 by rfer(12657)   on 2009-10-22 17:33:13 (Show Source): You can put this solution on YOUR website! 2(x+5)<8 2x+10<8 2x<-2 x<-1

Equations/230328: how would you solve.... 7/8 + t = 1/4 1 solutions Answer 170550 by rfer(12657)   on 2009-10-22 17:31:38 (Show Source): You can put this solution on YOUR website! 7/8+t=1/4 t=1/4-7/8 t=2/8-7/8 t=-5/8

expressions/230330: y+1=x+2 write equation in stardard form 1 solutions Answer 170549 by rfer(12657)   on 2009-10-22 17:30:19 (Show Source): You can put this solution on YOUR website! y=x+1

Linear-equations/230333: m= -3,(1,5) Y= I come up with y= -3 am I close 1 solutions Answer 170545 by rfer(12657)   on 2009-10-22 17:28:31 (Show Source): You can put this solution on YOUR website! -3 is the slope in the ordered pair x=1 and y=5 the y int is +8

test/230336: which expression is equivalent to x^6*x^2 ? A)x^4x^3 B) x^5x^3 C)x^7x^3 d) none 1 solutions Answer 170544 by rfer(12657)   on 2009-10-22 17:25:15 (Show Source): You can put this solution on YOUR website! when multiplied exponents add so (B) is equivalent

Square-cubic-other-roots/230334: what is the square root of 16 plus the cubed root of 8 ? 1 solutions Answer 170542 by rfer(12657)   on 2009-10-22 17:23:28 (Show Source): You can put this solution on YOUR website! 4+2=6

absolute-value/230007: What is the solution set for [8m+4]=2 I got -1/4 and -3/4 just checking to see if I am right. Thanks 1 solutions Answer 170409 by rfer(12657)   on 2009-10-21 21:49:22 (Show Source): You can put this solution on YOUR website! 8m+4=2 8m=-2 m=-2/8 m=-1/4

Numeric_Fractions/229996: how do we solve this problem 1/2+(2/3divided3/4)-(4/5x5/6)= 1 solutions Answer 170408 by rfer(12657)   on 2009-10-21 21:47:11 (Show Source): You can put this solution on YOUR website! 1/2+(2/3/3/4)-(4/5*5/6) 1/2+(2/3*4/3)-20/30 1/2+8/9-20/30 1/2+8/9-2/3 1/2+8/9-6/9 1/2+2/9 9/18+4/18=13/18

Distributive-associative-commutative-properties/229992: 4t-8+12=3-4t-11 1 solutions Answer 170404 by rfer(12657)   on 2009-10-21 21:40:42 (Show Source): You can put this solution on YOUR website! 4t-8+12=3-4t-11 4t+4=-4t-8 8t=-12 t=-1.5