Wednesday

November 25, 2015
Total # Posts: 31,836

**Calculus 1**

estimate as a trapezoid: height at x =2 is 1/8 height at x=5 = 1/125 average height = (1/8+1/125)/2 = 133/2000 appr area = (3)(133/2000) = 399/2000 = appr .2 actual area = ∫1/x^3 dx from 2 to 5 = ( - 1/(2x^2) ) from 2 to 5 = (-1/2)( 1/25 - 1/4) = 21/200 = .105
*November 25, 2015*

**Calculus 1**

Isn't Wolfram neat ? http://www.wolframalpha.com/input/?i=integral+cube+root%28x%29+dx+from+1+to+27 area = ∫x^(1/3) dx from 1 to 27 = (3/4)x^(4/3) from 1 to 27 = (3/4)( 81 - 1) = 60
*November 25, 2015*

**algebra**

width ---- x length ----2x+5 solve for x 2x + 2(x+5) = 66
*November 25, 2015*

**algebra**

same type of question as the one above, just change the numbers.
*November 25, 2015*

**Algebra**

base of box will be 6-2x by 14-2x , where 0 < x < 3 x(6-2x)(14-2x) = 40 x(2)(3-x)(2)(7-x) = 40 x(3-x)(7-x) = 10 x^3 - 10x^2 + 21x - 10 = 0 tried x = ±1, ±2, ±3 x = 2 worked by synthetic division, (x-2)(x^2 - 8x + 5) = 0 x = 2, the other roots are ...
*November 25, 2015*

**Algebra**

"the width across the page is four units of the length?" --- don't know what that means
*November 25, 2015*

**Math**

I am the product of 135 and ???? decreased by 500. who am I? you need 2 multipliers to have a "product"
*November 25, 2015*

**math**

V = (4/3)π r^3 dV/dt = 4π r^2 dr/dt 20 = 4π (36) dr/dt dr/dt = 20/(144π) cm/s = 5/(36π) cm/s
*November 25, 2015*

**Mathematics**

Don't rule out m = -10 as extraneous, since they do satisfy the given conditionn. of m = -10, m+8 = -2 their product = (-10)(-1) = 20 -2 is 8 more than -10 the numbers could also be -2 and -10
*November 25, 2015*

**math**

Using only one variable: seven years ago: Cora --- x Mary --- 6x present ages: Cora = x+7 Mary = 6x+7 one year from now Cora = x+8 Mary = 6x+8 6x+8 = 2(x+8) 6x +8 = 2x+16 4x=8 x =2 present ages: Cora = x+7 = 9 Mary = 6x+7 = 19
*November 25, 2015*

**Maths**

return on 1/3 of the 60000 investment with 20% profit = (1/3)(1.2)(60,000) = 24800 return on 2/3 of investment with a 5% loss = (2/3)(.95(60000) = 38000 total return = 62000 profit percentage = 2000/60000 = 1/30 = .03333.... or 3 1/3%
*November 25, 2015*

**Trigonomtry**

correct
*November 24, 2015*

**MATH HELP**

y = x^2 + 6 looks like this: http://www.wolframalpha.com/input/?i=y+%3D+x%5E2+%2B+6 now let's look at y = 3x^2 + 6 and y = (4/5)x^2 + 6 on the same grid http://www.wolframalpha.com/input/?i=y+%3D+3x%5E2+%2B+6%2C+y%3D%284%2F5%29x%5E2+%2B+6 what do you think?
*November 24, 2015*

**Algebra**

P(x) = R(x) - C(x) = .4x^2 - 29x + 44 +.6x^2 - 19x = x^2 - 48x + 44 this parabola cuts the x-axis at x = 47.065 and a negative Since x represents pencils, x>0 So this parabola will be above the x-axis for x>47 x of vertex is -b/(2a) = 48/2 = 24 P(24) = -532 the vertex is...
*November 24, 2015*

**correction - Math**

time taken by Gab ---- x minutes time taken by Van ---- 2x minutes Gab's rate = 1/x Van's rate = 1/2x combined rate = 1/x + 1/(2x) = 3/(2x) so 1/(3/2x) = 40 2x/3 = 40 2x = 120 x = 60 Gab's time alone is 60 minutes, Van's time alone is 120 minutes check: ...
*November 24, 2015*

**Algebra 1- Please help whenever you get the chance**

872(.16) + 24.54 = 164.06
*November 24, 2015*

**Math**

numerator --- x denominator --- y x/y = 2/3 2y = 3x y = 3x/2 new fraction: (x+4)/(y-2) = 6/7 6y - 12 = 7x + 28 6y = 7x + 40 3(2y) = 7x+40 3(3x) = 7x + 40 2x = 40 x = 20 y = 30 the non-reduced fraction was 20/30
*November 24, 2015*

**Algebra**

noticed a silly typo in 4th-last line should say: x= (9/2)(6) = 27
*November 24, 2015*

**Algebra**

the x = kx when x=9 , then y=2 9 = 2k k = 9/2 when y=6 x=x(9/2)(6) = 27 or, by simple ratio: x/9 = 6/2 = 3 x = 9(3) = 27
*November 24, 2015*

**math**

your school subject is : math not: Abubakar tafawa balewa university bauchi ATBU y = x + (1-x)^(1/2) y' = 1 + (1/2)(1-x)^(-1/2)(-1) = 1 - (1/2)(1-x)^(-1/2) = 0 for a max/min 1 = (1/2) (1/√(1-x) √(1-x) = 1/2 1-x = 1/4 4-4x=1 x = 3/4 f(3/4) = 3/4 + √(1-3/4...
*November 24, 2015*

**math**

4 years ago: Fe : --- x Jim: --- 4x Now: Fe = x+4 Jim = 4x+4 4 years from now: Fe = x+8 Jim = 4x + 8 4x+8 = 2(x+8) 4x + 8 = 2x + 16 2x = 8 x = 4 Now, Fe is 8 and Jim is 20
*November 23, 2015*

**Math**

looks like just sin5° = 1250/hyp where hyp is the hypotenuse you want hyp = 1250/sin5° = ...
*November 23, 2015*

**Algebra 2**

from the standard version of this form, vertex is (-20,0) axis of symmetry: x -20 min is 0 domain: any real number range: any real number, y≥0
*November 23, 2015*

**Algebra**

one number --- x the other ------2x+58 their product = x(2x+58) their sum = 3x + 58 x(2x+58)= 2(3x+58) + 58 2x^2 + 58x = 6x + 116 + 58 2x^2 + 52x - 174 = 0 (x-3)(2x + 58) = 0 x = 3 or x = -58/2 = -29 if x = 3 one number is 3, the other is 64 if x = -29 one number is = -29, the...
*November 23, 2015*

**math**

I am not familiar with the stock-market system in your country, but I can do the 2nd question rate of first pipe = 1/x cisterns/min rate of 2nd pipe = 1/(x+5) cisterns/min combined rate = 1/x + 1/(x+5) = (x+5 + x)/(x(x+5)) but that is 11 1/9 min or 100/9 minutes 1/[(2x+5)/(x(x...
*November 23, 2015*

**Calculus**

just did a question just like yours http://www.jiskha.com/display.cgi?id=1448296657 follow the steps for the half life, set the amount = 50 and solve for t
*November 23, 2015*

**Pre-calculus**

so 600(.97) = 600 e^(7k) .97 = e^(7k) ln .97 = 7k lne 7k = ln .97 k = ln .97/7 = -.004351315 amount = 600 e^-.0043511315t so when t = 24 amount = 600 e^-.104431.. = .900836(600) ----> 90.08% remain = 540.50 mg
*November 23, 2015*

**Math**

Since when does 42 lie between 25 and 36 ???
*November 23, 2015*

**precalc**

10^-2/3 = ....
*November 23, 2015*

**math**

choose 2 of the 6 meats and one of the 3 cheeses number of combinations = C(6,2) x C(3,1) = 15(3) = 45
*November 23, 2015*

**math**

Area to be covered = 42(80) or 3360 f^2 number of bags = 3360/350 = 9.6 but you can't buy a partial bag, so he needs 10 bags, which will cost $78.90
*November 23, 2015*

**math**

makes no sense! How can an amount (money I assume) be less if there is positive interest rate ?
*November 23, 2015*

**calculas**

Let the radius of the water level be r cm let the height of the water be h cm by ratio: r/h = 4/16 = 1/4 h = 4r or r = h/4 V = (1/3)π r^2 h = (1/3)π (h^2/16)(h) = (1/48)π r^3 dV/dt = (1/16)π r^2 dr/dt a) for the given data: .3 = (1/16)π(25) dr/dt dr/dt...
*November 23, 2015*

**Statistics**

Since you have the mean and sd plug in your range into http://davidmlane.com/hyperstat/z_table.html (one of the best sites for replacing all those nasty tables in the back of your text)
*November 23, 2015*

**Math**

you have contradictory and un-needed information, if a = -16 and r = 7 term(5) = ar^4 = -16(7^4) = - 38416 I suspect a typo anyhow, we won't need that anyway sum(5) = a(r^5 - 1)/(r-1) = -16(7^5 - 1)/6 = -44816
*November 22, 2015*

**Math**

looks like an AS with a = 12.1 , d = .9 what is the term number of 32.8 ? a + (n-1)d = termn 12.1 + (n-1)(.9) = 32.8 .9n- .9 = 20.7 .9n =21.6 n = 24 sum(24) = 12(first + last) = 12(12.1 + 32.8) = 538.8 check my arithmetic
*November 22, 2015*

**probability**

ok, I misread the question. All Cases , where X is not blue, 2 blue, 6 non-blue BBB --- not possible, only 2 blue BBX BXB ---> (2/8)(6/7)(1/6) = 1/28 XBB ---> (6/8)(2/7)(1/6) = 1/28 BXX XBX XXB ---> (6/8)(5/7)(2/6) = 5/28 XXX your prob = 7/28
*November 22, 2015*

**probability**

So you want the sequence XXB , that is, notblue-notblue-blue prob = (6/8)(5/7)(2/6) = 5/28
*November 22, 2015*

**Math**

using the formulas for GP's a = 25 ar^5 = -1/125 r^5 = (-1/125)(1/25) = -1/3125 r = (-1/3125)^(1/5) = -1/5 term3 = ar^2 = 25(-1/5)^2 = 1
*November 22, 2015*

**Math**

Notice that when you double the first equation (line), you get the second equation. Thus you have really one equation. So there would be an infinite number of solutions, that is, any point on the line is a solution If the second equation would have been 10x - 4y = 5, you would...
*November 22, 2015*

**Calculus**

see http://www.jiskha.com/display.cgi?id=1448204036 you did not answer Damon's question.
*November 22, 2015*

**Algebra**

Your setup is sloppy let the first number be x then the second number is 3x and the third is 3x+5 now translate the following: "if the second is decreased by twice the third number, the result is five" ----> 3x - 2(3x+5) = 5 3x - 6x - 10 = 5 -3x = 15 x = -5 check...
*November 22, 2015*

**Math**

since we know the x-intercepts, we can say y = a(x-1)(x-3) but (-1,16) lies on it, so 16 = a(-2)(-4) 16 = 8a a = 2 y = 2(x-1)(x-3) or y = 2x^2 -8x + 6
*November 22, 2015*

**math**

Volume of full tank = 5^3= 125 m^3 If 1/5 of it is empty, then 4/5 of it is full What is (4/5)(125) ? #2 Let P be (x,y) so that AP is the shorter segment to get the x: (x+2)/(3-x) = 2/3 3x + 6 = 6 - 2x 5x = 0 x = 0 to get the y: (y-6)/(-4-y) = 2/3 3y - 18 = -8 - 2y 5y = 10 y...
*November 22, 2015*

**math**

SA = 2 circles + a rectangle = 2πr^2 + 2πrh 440 = 2π(49) + 2π(7)h h = (440- 98π)/(14π) = ... you do the button-pushing, should get appr 3m
*November 22, 2015*

**math**

you have an arithmetic sequence with a = 5,000,000,000 d = -10 n = ?? , where n is in seconds term(n) = a+(n-1)d you want term(n) = 0 5,000,000,000 + (n-1)(-10) = 0 -10n + 10 = -5000000000 -10n = -5,000,000,010 n = 500,000,001 seconds = 8,333,333.35 minutes = 138,888.89 hours...
*November 22, 2015*

**math**

greens ---- x reds ------ 8x x + 8x + 36 take over, it's a piece of cake.
*November 22, 2015*

**calculas**

V = (4/3)π r^3 dV/dt = 4π r^2 dr/dt -4 = 4π r^2 dr/dt (-4 because V is decreasing) dr/dt = -1/(πr^2) S = 4π r^2 dS/dt = 8πr dr/dt = 8πr(-1/(π r^2) = -8/r so when r = 24 , dS/st = -8/24 = -1/3 The surface area is decreasing at 1/3 cm^2 ...
*November 22, 2015*

**math**

smallest 2 digit number divisible by 4 is 12 so we want: 12, 16, 20, 24, 28, 32, 36, 40,.... ,96 this is an arithmetic sequence with a = 12, d=4 what term number is 96 ? a + (n-1)d = 96 12 + (n-1)(4) = 96 4n - 4 = 84 4n = 88 n = 22 There would be 22 terms divisible by 4 BUT, ...
*November 22, 2015*

**Algebra 1**

Tylers rate = 1/x kitchens/hr Mary's rate = 1/9 kitchens /hr combined rate = 1/5 but combined rate = 1/x + 1/9 = (9+x)/(9x) = 1/5 9x = 45+5x 4x=45 x = 45/4 = 11.25 hrs Alone would take him 11.25 hrs
*November 21, 2015*

**math 1350**

so does 315
*November 21, 2015*

**College Algebra**

when is -16t^2 + 6400 = 0 ? 16t^2 = 6400 t^2 = 400 t = 20
*November 21, 2015*

**Algebra - Math**

let the shortest side be x middle side = x/2 + 9 longest side = 4x x + x/2+9 + 4x = 31 solve for x, I suggest multiplying each term by 2 to clear the fraction
*November 21, 2015*

**Calculus**

I believe you are referring from your post last Thursday. http://www.jiskha.com/display.cgi?id=1447957757 and you accept that the long division yields x/(6x-5) = 1/6 + 5/(36x) + 25/(216x^2) + 125/(1296x^3 + .. let's look at the term that caused your confusion 5/(36x) = (5/...
*November 21, 2015*

**Calculus**

place the region on an x-y grid so that the centre of the base is at the origin. so the vertex is (0,.64) equation is: y = a(x-0)^2 + .64 y = ax^2 + .64 but (.8,0) lies on it 0 = a(.64) + .64 a = -.64/.64 = -1 y = -x^2 + .64 area between curve and x-axis = 2∫(-x^2 + .64...
*November 21, 2015*

**Math**

let number of reds be x number of whites = x-1 number of blues = x + x-1 = 2x - 1 now to the value of these: .15x + .10(x-1) + .05(2x-1) = 125 times 100 15x + 10(x-1) + 5(2x-1) = 12500 solve for x, and sub back in my definitions
*November 21, 2015*

**c.s.s Nawfia**

h = -4.9t^2 + 5 we want h=0 4.9t^2 = 5 t^2 = 5/4.9 t = √(5/4.9) = appr 1.01 seconds
*November 21, 2015*

**Math**

lw = 140 2l + 2w = 48 l + w = 24 l = 24-w in lw = 140 w(24-w) = 140 -w^2 + 24w - 140 = 0 w^2 - 24w + 140 = 0 (w-10)(w - 14) = 0 w = 10 or w = 14 if w=10, l= 140/10 = 14 if w = 14, l = 140/14 = 10 we call these symmetric roots the rectangle is 10 cm by 14 cm
*November 21, 2015*

**math**

surface area = 2(2)(1.5) + 2(2)(.8) + 2(1.5)(.8) = 11.6 m^2 @ 30 per m^2 cost = 30(11.6) = 348 #2 SA = 1(8)(4) + 2(8)(2) + 2(4)(2) = ...
*November 21, 2015*

**Math**

prob(left) = .08 prob(right) = .92 let's first do the prob that in a class of 20 nobody is left-handed = C(20,0)(.08)^0 (.92)^10 = .434388.. (I stored it) or prob(1 or more lefthanders) = 1-.4343...= .56561... Now we want the prob that of 50 classes contain no left-handed ...
*November 21, 2015*

**Math**

Now how do you expect us to know what table 20.2 is ??
*November 21, 2015*

**math**

so sinx + siny = cosx + cosy the trivial and obvious solution is x = y = 45° or π/4 another obvious one is 225° or 5π/4, because of the CAST rule are there others , not multiples of 45° recall: sin a + sin b = 2 sin (1/2)(a+b) cos (1/2)(a-b) cos a + cos b...
*November 21, 2015*

**maths**

Back in 2009 , your question appeared this way http://www.jiskha.com/display.cgi?id=1245573843 Do you have a typo?
*November 21, 2015*

**Trigonometry**

cosØ = 9/20 = .45 Ø = appr 63.3° y^2 + 9^2 = 20^2 solve for y to get the height
*November 21, 2015*

**Math**

mmmhhh, I thought logA + logB = log(AB) I suspect a typo in the original question.
*November 21, 2015*

**Math**

let Log3 (4x+1) = a and log3(13x-5) = b , where x > 5/13 then ab = 2 --> b = 2/a 3^a = 4x+1 x = (3^a - 1)/4 3^b = 13x-5 x = (3^b + 5)/13 (3^a - 1)/4 = (3^(2/a) + 5)/13 arggghhh, let's see what Wolfram says, (I changed the a to x, Wolfram did not like the a) http://...
*November 21, 2015*

**college algebra**

width = x length = 2x+5 hypotenuse = 2x+5 + 2 = 2x+7 (2x+7)^2 = x^2 + (2x+5)^2 4x^2 + 28x + 49 = x^2 + 4x^2 + 20x + 25 0 = x^2 - 8x - 24 x^2 - 8x + 16 = 24+16 (x-4)^2 = 40 x-4 = √40 x = 4 ±√40 = appr 10.325 or a negative width = 10.325 ft length = 25.649 ft
*November 21, 2015*

**math**

let the time be t hrs 52t + 56t = 72 take over to solve for t (hint: it will clearly be less than 1 hr)
*November 20, 2015*

**Math**

consider $1 to obtain 4 times the $1, we need $3 in interest 3 = 1(.07)(t) t = 3/.07 = appr 42.9 years check: consider $100 interest at 7% for 42.9 years = 100(.07)(42.9 = 300.3 so add that to the 100 we started with, we get 400.3
*November 20, 2015*

**Math**

correct
*November 20, 2015*

**Math**

Of course you would want to find the vertex of the hyperbola several easy ways to do this 1. for the general quadratic y = ax^2 + bx + c the x of the vertex is -b/(2a), then plug that back into the equation to find the y so here , t of the vertex = -21/-10 = 2.1 then H = -5(2....
*November 20, 2015*

**Algebra**

#1 Since your new line is to be parallel to y = -x - 2 then it must clearly start as y = -x ...... as well let new one be y = -x + b, but (2,-2) is on it, so -2 = -2) + b b = 0 new one is y = -x #2, correct #3, the given line x = -3 is a vertical line so the vertical line ...
*November 20, 2015*

**College pre calc**

You could just turn the terms in the binomial around (m+3t)^10 then the term we want is just the third term = C(10,0)m^0 (3t)^10 + C(10,1)m^1 (3t)^9 + C(10,2)m^2 (3t)^8 + .. C(10,2) = 45 , (Damon explained that) (3t)^8 = 6561t^8 so we have 45(6561)m^2 t^8 = 295245m^2 t^8 ...
*November 20, 2015*

**Math**

area = lw w = area/l = (8x+44y)/(2x+11y) = 4(2x + 11y)/(2x+11y) = 4 or what must I multiply 2x+11y by to get 8x+44y ? how about by 4
*November 20, 2015*

**Precalc Trig**

cos(2Ø) = 1 2Ø = 0 or 2Ø = 2π Ø = 0 or Ø = π Now here is the problem: Are you graphing on a rectangular graph where Ø is the horizontal axis and r is the vertical axis OR Are you graphing in polar coordinates ??? I will ...
*November 20, 2015*

**Math 1350**

original class: number of boys = 4x number of girls = 3x new class: boys --- 4x+3 girls --- 3x + 1 (4x+3)/(3x+1) = 3/2 9x + 3 = 8x + 6 x = 3 original class boys = 12 girls = 9 , notice ratio = 12:9 = 4:3 new class boys = 15 girls = 10 , new ratio = 15:10 = 3:2
*November 20, 2015*

**math**

let r be the rate of increase 8(1) = 6(1+r) 8 = 6 + 6r 6r = 2 r = 1/3 or 33 1/3% purchase price = 90/150 = .6 per egg selling price = 85/100 = .85 per egg percentage gain = .25/.6 = .41666... or 41 2/3%
*November 20, 2015*

**math**

let the amount invested be P let the rate be i 900 must be the difference in the balance between year n and year n+1, and the same for the following year: p(1+i)^(n+1) - p(1+i)^n = 900 p(1+i)^(n+2) - p^(n+1)^(n+1) = 981 from first: p(1+i)^n[(1+i - 1) = 900 from 2nd: p(1+i)^n...
*November 20, 2015*

**algebra**

number of dimes --- x number of nickels --- x+2 number of pennies --- 3(x+2) now considering value of these coins: 10x + 5(x+2) + 1(3)(x+2) = 52 take over
*November 20, 2015*

**math**

I think you are referring to this previous question. http://www.jiskha.com/display.cgi?id=1447992333 See my answer at the other post
*November 20, 2015*

**maths**

Surely you must have meant volume, or else the question makes no sense - use the same units, since we want the answer in m^3, change to m volume = 2(1.95)(.1) = .39 m^3
*November 20, 2015*

**correction - Maths**

number of twenty-cent coins --- x number of fifty-cent coins ----- x+12 value of x+12 fifty-cent coins = 50(x+12) value of x twenty-cent coins = 20x 50(x+12) - 20x = 2100 50x + 600 - 20x = 2100 30x = 1500 x = 50 There are 50 twenty-cent coins and 62 fifty cent coins check: ...
*November 20, 2015*

**probability theory**

prob(A) = 2/x prob(B) = 2/x prob(C) = 1/x but 2/x + 2/x + 1/x = 1 times x 5 = x A--> 2/5 B--> 2/5 C--> 1/5 order of finish ABC *** (2/5)(3/5)(4/5) = 24/125 ACB *** (2/5)(4/5)(3/5) = 24/125 BAC --- BCA --- CAB --- CBA --- We don't want the two I calculated, so prob...
*November 20, 2015*

**math**

2n + 5 < 13 2n < 13-5 2n < 8 n < 4 any other method only complicates and confuses the problem. I have no idea what this "problem-solving strategy Work Backward" is.
*November 20, 2015*

**math**

Don't know what you mean by an "even" ratio. If the two terms are even, they we divide by at least 2, until one of them or both are odd. A ratio with both terms even is not in lowest terms, just like a fraction can be reduced if both numerator or denominator are ...
*November 19, 2015*

**math**

csc(x) = cot(x) /x 1/sinx = cosx/(xsinx) 1 = cosx /x , as long as sinx≠0 cosx = x let's see what the graph looks like if y = x and y = cosx http://www.wolframalpha.com/input/?i=plot+y+%3D+x+%2C+y+%3D+cosx looks like a solution around x = .65 these type of equations ...
*November 19, 2015*

**Business Math**

interest due at the end of 120 days = 8500(120/365)(.09) = 251.51 so of his $4000 payment, $3748.49 will go towards reducing the debt. so balance owing = 8500 - 3748.49 = 4751.51 interest for the remaining 80 days = 4751.51(.09)(80/365) =93.73 total owing at the end = 4751.51+...
*November 19, 2015*

**MATH**

I will assume that #1 is 12/x = -3 multiply both sides by x --> 12 = -3x divide both sides by -3 -4 = x or by the "just look at it theorem" ... What must 12 be divided by to get an answer of -3 ?? #2 24 = 120/x do the same thing as in #1 24x = 120 x = 120/24 = 5
*November 19, 2015*

**Rudy - Truda :Algebra 2**

Please use the same nickname throughout your different posts. You are making things way too complicated. You are looking at a difference of squares x^6 - 64 = (x^3 -8)(x^3 + 8) now I see a sum and a difference of cubes = (x-2)(x^2 + 2x + 4)(x+2)(x^2 -2x + 4) the two quadratics...
*November 19, 2015*

**Algebra 2**

Bob, in line #2 , you forgot to divide the 1 by 3 it actually factors into (x+1)(3x-1) = 0 so x = -1 or x = 1/3
*November 19, 2015*

**Calc**

I am sure you meant to say: 2(2)^(t/10) other than that, you are correct
*November 19, 2015*

**Geometry**

The volume of the cylinder does not enter into the problem. As Bob pointed out, the dropped sphere will simply displace its own volume, which is (4/3)π(2^3) = 32π/3 cm^3 The sphere could have been dropped in any container, a fruit bowl, a coffee can, or whatever as ...
*November 19, 2015*

**algebra**

easiest way: multiply each term by 60 , the LCD 15x - 12x - 20 = 64 take over
*November 19, 2015*

**algebra**

enlarge it just once with a scale factor of 8
*November 19, 2015*

**Algebra 1**

If you have two lines with different slopes and different y-intercepts, they MUST intersect and you will ALWAYS have a solution
*November 19, 2015*

**Geometry**

(x,y,z) ---->(3x,3y,3z) so (-1,-2,0) ---> .......
*November 19, 2015*

**math**

each side is √256 or 16 so the perimeter is 64 you were right the first time
*November 19, 2015*

**algebra**

The coefficient of 3x^2 is 3. The exponent is 2
*November 19, 2015*

**Pre-Calc**

I am having the same problem Steve had, when this same question was posted 2 years ago http://www.jiskha.com/display.cgi?id=1382575312 Notice , the wording is identical, just the angles have been changed.
*November 19, 2015*

**math**

purchase cost = 10(22) = 220 number of eggs bought = 120 number rotten = 6 good eggs = 114 return = 114(2.5) = 285 profit = 285-220 = 65 you were correct
*November 19, 2015*