Answers by visitors named: Barry

a) .0225 b) =1-P(x=0)=.0445 c) I do not know.

She and mon got to the Dock late.

How can we answer this question in that section 1 and2

I don't know how to calculate it, that's why I was looking for help

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Wow. You have a lot of posts for your question Jocelyn

Sorry if I spelled your name wrong. If you do not care it would be some good news joceyln

6.34 x 10 to the fifth power

Actually, to do it the way he did would be wrong all together, because you would have to foil the (1+h/re)^2... you would have to multiply bothe sides by (1+h/re)^2 first... giving you: GMe-GMe=.007(1+h/re)^2 Obviously, GMe-GMe would give you zero... creating a quadractic equation once you reverse foil the thing... algebra works like this: 0=.007(1+h/re)^2 let x=h/re 0=.007(1+x)^2 this equals: 0=.007(1+x)(1+x) 0=.007(1+2x+x^2) 0=.007x^2+.014x+.007 once you solve for x, you would set x back = to h/re and solve for h... This is assuming that he also did the rest of his algebra correct... I haven't checked that yet...

which it's not at all... if you start with g=GMe/re^2 then the difference in the two gravitys would be: (GMe/re^2)-(GMe/(h-re)^2=.007 to get like sides here, start by factoring out a GME... leaving you with GMe(1/re^2 - 1/(h-re)^2)=.007 divide both sides by GMe and you have: (1/re^2)-(1/(h-re)^2)=.007/GMe now, this gets tricky, so follow closely. if you divide both sides by (1/re^2)-(1/(h-re)^2) you get: 1=(.007/(GMe*(1/re^2-(1/(h-re)^2)) that goes to 1=.007/((GMe/re^2)-(GMe/(h-re)^2) which expands to: 1=.007/(GMe/re^2) - .007/(GMe/(h-re)^2 if you divide something, you are actually multiplying it by it's reciprical so you have: 1=(.007re^2/GMe)-(.007(h-re)^2/GMe) multiply out GMe to both sides: GMe=.007re^2-.007(h-re)^2 that expands out to GMe=.007re^2-.007(h^2-hre+re^2) divide out .007: GMe/.007=re^2-h^2-hre+re^2 this simplifies to GMe/.007=-h^2-hre+2re^2 subtract both sides by -h^2-hre+2re^2 to be able to set up your quadratic equation like above.... so you are left with: h^2+hre-2re^2+GMe/.007=0 your quadratic equation would be h= -re+/-sqrt((re^2-(4*1*(-2re^2+GMe/.007)))/2*1) plug in your GMe and re and pick which ever one makes sense and you have your h values :)

WAIT!!!!! i did h-r instead of h+r... therefore rework the steps with h+re instead of h-re..... sorry

1/13

log(1/4) = (3x+5)log8 log0.25/log8 = 3x+5 -2/3 = 3x+5 x= -17/9

log(base 3) x*(x-80)=4 3^4 = x(x-80) 81 = x^2 - 80 quadratic equation x= -1(rejected) or 81 x= 81 log properties used= log(base a)b=k a^k=b hope it helps :)

each side of the new area of the garden = 13 since 13x13 = 169 (side x side = area of square) so 13-9 =4m Therefore, 4m should be the answer

Dear Mandy, Here is the solution log2 0.45 = log2 (9/20) = log2 9 - log2 20 = 2log2 3 - log2 (4x5) = 2h- (log2 4 + log2 5) = 2h-(2+k) = 2h-2-k Hope this helps

3/ (6+5+4+3) = 1/6

Dear Abdulhafiz the no of mole of the 50ml of ph3 solution= (1x10^-3)x (50/1000) = 5x10^-5 the number of moles in the 50ml of ph5 solution= (1x10^-5) x (50/1000) = 5x10^-7 Total no of moles in the solution = 5x10^-5 + 5x10^-7 = 5.05x10^-5 The molarity of the new soltion = (5.05x10^-5) / (100/1000) = 5.05x10^-4 The ph value (ph = -log H+) ph = -(log5.05x10^-4) ph= 3.30 You must find the mol of the new solution so that you are able to find the ph value of the new solution, rather then just finding the average ph value of the new solution(since it will not be accurate) Hope it helps!

Dear Brett, molar mass of the HNO3= 1+14+16x3 =63 number of moles of the HNO3 produced in the reaction = 7.5/63 = 0.119 According to the equation provided 3 moles of NO2 will produce 2 moles of HNO3 Thus,number of moles of NO2 required= 0.119/2x3 = 0.179 mass of N02 required= 0.179x(14+32) = 8.214g Therefore, 8.214 grams of N02 is required Hope it helps:)

Dear Veronica, number of moles of HNO3 used= 0.602x(23.4/1000) = 0.014 number of mol of Cu used= 0.014/8x3 =5.28255x10^-3 mass of the Cu involved in the reaction = 5.28255x10^-3 x 63.5 = 0.33544g %by mass of Cu = 0.33544/0.411 x 100% = 81.6%

Dear hifsa still remember there is a formula Molarity= mol/dm cube so ........ 0.5= mole/ (1.25/1000) number of mole= 6.25x10^-4

Dear Sally, Here is the balanced equation HCL(aq) + NAOH(aq)---- NACL(s)+ H20(l) Number of moles in the NAOH(aq)= 40/(23+16+1) =1 as 1 mole of HCL will react with 1 mole of the Naoh solution number of mole of HCL required= 1 Still remember that there is a equation mol= g/molar mass Let the number of grams of HCL needed be g grams the number of grams of HCL required= 1= g/(1+35.5) g=36.5 Therefore, 36.5 grams of HCL is required Hope it helps!!

Dear Sally, as I have replied you before, I am not sure whether you have checked HCL(aq) + NAOH(aq)---- NACL(s)+ H20(l) Number of moles in the NAOH(aq)= 40/(23+16+1) =1 as 1 mole of HCL will react with 1 mole of the Naoh solution number of mole of HCL required= 1 Still remember that there is a equation mol= g/molar mass Let the number of grams of HCL needed be g grams the number of grams of HCL required= 1= g/(1+35.5) g=36.5 Therefore, 36.5 grams of HCL is required For the grams of Nacl produced 1 mole of Hcl will produce 1 mole of nacl Let the number of grams of salt produced be g grams 1x(23+35.5) =55.5 Therefore 55.5 grams of nacl is produced For the grams of water produced 1 mole of Hcl will produce 1 mole of water Let the number of gram of the water produced be g grams so 1= g/18 g=18 Therefore, 18 grams of water is produced

The largest share is 650x(6/13) = 300

The amount of petrol required for each Km = 18/90 =0.2L The amount of petrol needed for 200km =0.2x200 =40L

Dear marie, I guess there is no AlO3 existing So do you actually mean aluminium oxide (Al2O3) The balanced equation is 3OH- + AL3+ -------> Al(OH)3 mol of aluminium oxide needed= 98.1 as 1 mole of aluminium oxide required 3 moles of sodium hydroxide to react with mol of sodium hydroxide= 98.1X3 = 294.3 number of grams of NaOH needed= 294.3x( 23+ 16 +1) =11772grams

Dear akhmal, mol of sucrose used= 1/(12x12 + 22 + 11X16) = 2.92x10^-3 as 1 mole of sucrose will produce 12 moles of Co2 mol of CO2 produced= (2.92x10^-3)X 12 = 0.035 grams of CO2 produced = 0.035 X (12+32) = 1.54g as 1 mole of sucrose will react with 12 moles of o2 mole of O2 needed= (2.92x10^-3)X 12 = 0.035087719

I= PRT Simple interest = 280 Nigerian naira X 2.5 X 0.03 = 21 Nigerian naira

Dear shashank, The chemical formula of FeSo4.7H2O = 55.8+ 32.1+ 16x4 + 7x18 = 277.9 The percentage of water of crystallization= = (7x18)/ 277.9 x 100% = 45.34%

Dear High, The amount that you are going to get =1000 x (1+(0.08/4))^(4x7) =1741.024 For the interest that you are going to get= 1741.024-1000 = 741.024

Dear Marcus, The answer is 1/(2x^9y^3) since [-10x13y^12]^0 = 1 as there is a rule <y^0 = 1> And the denominator cannot be further simply Hope it helps!

Dear Ann, 3.88 = 3.74 + log (x/0.1) 0.14 = log (x/0.1) 10^(0.14) = x/0.1 x = 1.38 x 0.1 x= 0.138 These are the calculation steps. I suppose the answer is 0.138 instead of 0.137. Ann,do you mind showing your calculation steps so I can know what is your mistakes during the calculation. Wishing you the best of luck, Barry

Dear Kyle, the equation of circle let (h,k) be the center of the circle let the radius be r then the equation of circle will be (x-h)^2 + (y-k)^2 = r^2 so according to your equation of circle given the center point= (-5,7)

Dear Kyle, Sub (a,3) into the equation 5x + y = 8 5a + 3 = 8 5a = 5 a = 1 Hope it helps! wishing you the best of luck, Barry

Dear sharon, the first equation y = -7x - 9 slope= -7 y-intercept= -9 the second equation -3y = 21x + 7 y = -7x -(7/3) slope= -7 y-intercept= -(7/3) To determine whether the two lines are perpendicular slope of equation 1 X slope of equation 2 must be -1. But in this case, slope of equation 1 X slope of equation 2 = 49 instead of -1 so the two lines are not perpendicular. (However, slope of equation 1 = slope of equation 2 and the y-intercept of the two equations are not the same, so we know that the two lines are parallel to each other.) Hope it helps! Wishing you the best of luck, Barry

Hi! the question is ¡Ô(4x+1) + ¡Ô(x+1) = 2 Square both sides (¡Ô(4x+1) + ¡Ô(x+1))^2 = 2^2 still remember the identity (a+b)^2 = a^2 + 2ab + b^2 let ¡Ô(4x+1) be a ¡Ô(x+1) be b as a^2 + 2ab + b^2 we can derived the equation 4x+1 + 2¡Ô(4x^2+13x+3) + x+3 = 4

Dear sharon, 840 x 0.02 = 16.8(decimal number) 16(integer) Hope it helps! wishing you the best of luck Barry

Dear Roberta, the answer is D (1/2)(10t) =50,000 (10t) =50,000 /(1/2) 10t= 100000 t = 10000 Hope it helps! Wishing you the best of luck Barry

Dear Roberta, Let the number of people be y 100 + 20y = 25 + 25 y 75 = 5y y = 15 So the answer should be B Hope it helps! Wishing you the best of luck, Barry

Dear Roberta, the answer should be D recall the identity (a-b)^2 = a^2 - 2ab + b^2 Hope it helps Wishing you the best of luck barry

5/18

Assume x and y are functions of t, Evaluate dy/dt, 3xy-6x+2y^2 dx/dt=-6 x=2 y=-3 dy/dt

One ppm is one millionth of a gram or in simpler terms, 10^6.

1.1

Scientifically if the moon spun on the same rotational period as earth we would typically see the different parts of the moon

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I suspect the questioner is asking whether Farmer Brown farms, or farmer Brown farms. See the difference? If the farmer Mr Brown is generally known as Farmer Brown, the word farmer has been elevated to a nominative category unique to Mr Brown and thus ascends the rank to be regarded as proper, categorically speaking; thus, you can happily apply a capital.

Thank you!

Okay, I know I'm late, but I just wanted to do this anyways. Here's what I got: 1. Things were done in the wars of by the Greeks, in the Romanist. 2. She was taught by the sailors Greek sword fight. 3. From bright to the queen of the wild beast of the poet from the great dinner ready in advance. 4. Sailor beautiful wine magic spell is broken. Uh...that doesn't make much sense, but it's another language so that might be why. I take Spanish and not Latin, so sorry.

The answers for Global Politics and Economics are 1: B 2: D 3: C 4: B So Camera and Harley's answers are correct. I don't know why Martha's would have had different answers, but for anyone in INCA, these are right.

My family members always say that I am wasting my time here at net, except I know I am getting familiarity everyday by reading thes fastidious articles or reviews. fodboldtrøjer CharlesMc fodboldtrøjer LindseyLy

So, it's 28 * ( 1.2) = 35 + 7 = 42 ft so, 42 = 7h h = 6 or is it the answer you provided?

So what’s the answer?