Wednesday
July 27, 2016

Posts by henry

Total # Posts: 11,914

math
4c =< 9, C =< #2.25 Per doz.
April 7, 2016

Math
Grandfather: X years old. Father: x-26 years old. Son: (x-26)-29 = x-55. x + x-26 + x-55 = 135, 3x - 81 = 135, 3x = 216, X = 72, x-26 = 46, x-55 = 17.
April 7, 2016

Sarah
Can you explain your problem in words instead of drawing a diagram? I understand electrical circuits, but I don't understand your diagram.
April 7, 2016

Math
Beginning bal. = 1761.
April 5, 2016

algebra
V1 = X km/h, V2 = x + 18 km/h. d1 + d2 = 150 km. 3x + 3(x+18) = 150, 6x + 54 = 150, 6x = 96, X = 16 km/h, x+18 = 16 + 18 = 34 km/h = V2 = Speed of the faster car.
April 5, 2016

science
Vo = 180m/s[55o]. a. Range = Vo^2*sin(2A)/g = 180^2*sin(110)/9.8 = 3107 m. b. Same procedure as "a" except g = 1.6 m/s^2.
April 5, 2016

physics
Xc = 1/WC = -1/(314.2*20*10^-6) = -159.2 Ohms. Z(Ohms) = 30 -j159.2 = 162[-79.3o]. I = E/Z = 100[0o]/162[-79.3] = 0.617A[79.3o].
April 4, 2016

physics
a. Xl = E/I = 3.6/2.5*10^-4 = 1.44*10^4 Ohms. b. Xl = 2pi*F*L = 14,400, L = 14,400/(6.28*1.6*10^6) = Henrys.
April 4, 2016

Science
V1 = 15 + 3 = 18 km/h. V2 = 15 - 3 = 12 km/h.
April 4, 2016

MATH
P = Po + Po*r*t = 2200 + 2200*(0.07/360)*100 = P = 2200 + 2200*(0.07/365)*100 =
April 4, 2016

math
Correction: 4- 1 1/2 = 2 1/2 Pizza without pepperoni. 1 1/2 - 5/6 = 3/2 - 5/6 = 9/6 - 5/6 = 4/6 = 2/3 Pizza with pepperoni remaining. 4 - 5/6 = 24/6 - 5/6 = 19/6 = 3 1/6 Pizza left. (2/3)/(19/6) = 2/3 * 6/19 = 12/57 = 4/19 Of total pizza left has pepperoni.
April 3, 2016

math
4- 1/1/2 = 2 1/2 Pizzas without pepperoni. 2 1/2 - 5/6 = 5/2 - 5/6 = 15/6 - 5/6 = 10/6 = 5/3 = 1 2/3 pizzas with pepperoni remaining. 4 - 5/6 = 24/6 - 5/6 = 19/6 = 3 1/6 Pizzas left. (5/3)/(19/6) = 5/3 * 6/19 = 30/57 = 10/19 Of total pizza left has pepperoni.
April 3, 2016

math
g = C/5 + J/5 + S/5. C = Classic CDs, J = Jazz CDs, and S = Soft rock CDs.
April 3, 2016

Physics
Vo = 2.19m/s[25.1o]. Yo = 2.19*sin25.1 = 0.93 m/s. a. Y^2 = Yo^2 + 2g*h = 0, 0.93^2 - 19.6h = 0, -19.6h = -0.865, h = 0.0441 m. b. Y = Yo + g*t = 0, 0.93 - 9.8t = 0, -9.8t = -0.93, t = 0.095 s. c. V = Vo = 2.19 m/s.
March 31, 2016

Physics
F = 32N[30o] + 56N[0o]? + 38N[60o] = 27.7+16i + 56 + 19+32.9i = 102.7 + 48.9i = 118N{25.5o]. F = M*a, a = F/M = 118[25.5o]/118 = 1 m/s^2[25.5o].
March 31, 2016

Mechanics
Wb = M*g = 6 * 9.8 = 58.8 N. = Wt. of block = Normal(Fn). Fap-Fk = M*a, 22.5-Fk = 6*1.25 = 7.5, Fk = 15 N. = Force of kinetic friction. u = Fk/Fn = 15/58.8 = 0.255.
March 30, 2016

Physics- Circuits Current & Voltage Problem
The above note does not apply to R2.
March 29, 2016

Physics- Circuits Current & Voltage Problem
E1 = 40V., R1 = 80 Ohms. E2 = -360V., R2 = 20 Ohms. E3 = 80V., R3 = 70 Ohms. Ro = 200 Ohms. Convert the 3 voltage sources to a single current source: Is = E1/R1+E2/R2+E3/R3 = 40/80 - 360/20 + 80/70 = -16.9A., Downward. Determine current through Ro: 1/Rs = 1/R1+1/R2+1/R3 = 1/80...
March 29, 2016

math
Adult: $X each. Student: $Y each. Eq1: 7x + 16y = 120. Eq2: 13x + 9y = 140. Multiply Eq1 by 13, Eq2 by 7, and subtract: 91x + 208y = 1560 91x + 63y = 980 Diff.:145y = 580. Y = $4.00.
March 29, 2016

Physics
V = Vo + a*t = 0 + 2*2 = 4 m/s. a. d1 = v*t = 4 * 4 = 16 m. V = Vo + a*t = 0, 4 + a*10 = 0, a = -0.4 m/s^2. V^2 = Vo^2 + 2a*d2 = 0, 4^2 - 0.8*d = 0, -0.8d2 = -16, d2 = 20 m. b. Vavg = (d1+d2)/(t1+t2) = (16+20)/(4+10) = 2.57 m/s.
March 29, 2016

Physics
Vo = 108,000m/3600s = 30 m/s. V = Vo + a*t = 0, a = -Vo/t = -30/5 = -6.0 m/s^2.
March 29, 2016

PHYSICS
Add a resistor in series with the coil: R+12 = E/I = 10/0.0025 = 4,000, R = 4,000-12 = 3,988 Ohms.
March 29, 2016

College Algebra
a. Y = 2^w + 7.
March 28, 2016

math\
Po*0.03*1 + (Po+750)*0.05*1 = 157.50. 0.03Po + 0.05Po + 37.50 = 157.50, 0.08Po = 120, Po = $1500 @ 3%. 1500 + 750 = $2250 @ 5%.
March 28, 2016

science
M*g = 40*9.8 = 392 N. Fp = 392*sin20 = 134.1 N. = Force parallel to the incline = Force required to pull the body up the incline.
March 28, 2016

Math
V = -2000t + 20,000 = 14,000. t = ?.
March 27, 2016

Math
A. J(2,1), K(-5,1), L(-5,2), M(2,2). B. L = 2 - (-5 = 7, W = 2-1 = 1. P = 2L + 2W = 2*7 + 2*1 = 16 Units.
March 26, 2016

Physics
a. P = E^2/R = (120)^2/R = 5.00 W., R = (120)^2/5 = 2,880 Ohms. P = (230)^2/2880 = 18.4 W. b. U.S.A.: 120I = 5.0, I = 0.0417A. Rome: 230I = 18.4, I = 0.08A. I = 1.2 * 0.0417 = 0.050A = Current at which the razor will be damaged. Yes. c. Np/Ns = Vp/Vs = 230/120 = 1.92/1. d. R...
March 26, 2016

Physics
Vt = 72,000m/h * 1h/3600s = 20 m/s. a. Fp = (Vs+Vp)/(Vs-Vt) * Ft =(343+0)/(343-20) * 600 = 637.2 Hz. b. Fp = (Vs-Vp)/(Vs+Vt) * Ft =
March 26, 2016

physics
M1*V1 + M2*V2 = M1*V3 + M2*V4, 2*10 + 3*0 = 2*V3[30o] + 3*4, 20 = 2V3[30o] + 12, 2V3[30] = 8. 2[30] = 8/V3, 1.732 + i = 8/V3, 8/V3 = 2, 2V3 = 8, V3 = 4 m/s. = Speed of 2kg ball.
March 25, 2016

physics
t = 54rev * 1min/3500rev = 0.0154 min. = 0.93s. Vo = 3550 rev/min * 6.28rad/rev * 1min/60s = 372 rad/s. V = Vo + a*t = 0, a = -Vo/t = -372/0.93 = -400 rad/s^2.
March 25, 2016

Physics
Work = F*d = Mg * d = 20*9.8 * 10 = 1960 J.
March 25, 2016

physics
Incomplete.
March 25, 2016

Physical Science
Density = 500g/50cm^3 = 10g/cm^3.
March 24, 2016

Science
Defective light bulb, defective switch, dead battery or miswired.
March 24, 2016

Engineering Accounting
The Equation used most often for home and auto loans: P = Po*r*T/(1-(1+r)^-T) (Po*0.01*72)/(1-1.01^(-72)) = 38,060, 0.72Po/0.51150 = 38,060, 1.41Po = 38,060, Po = $27,038.67. = Cost of car.
March 23, 2016

Engineering Accounting
P = 3500 + (480*72) = 38,060. P = Po(1+r)^n = 38,060, r = 0.12/12 = 0.01/mo., n = 72 Compounding periods. Po(1.01)^72 = 38,060, 2.047Po = 38,060, Po = $18,592.16. = Price of car.
March 23, 2016

Engineering Accounting
Price = 3500 + (480*72) =
March 23, 2016

Business math
1. P = Po(1+r)^n. r = 0.046/2 = 0.023 = Semi-annual % rate. n = 2Comp./yr. * 8.5yrs. = 17 Compounding periods. P = 26,000(1.023)^17 = $38,270.058. 8.5yrs. = 102 Months. 38,270.058/102 = $375.20/Mo. 2. I = 38,270.06 - 26,000 = $12,270.06.
March 23, 2016

Math
I = Po*r*t = (1350-300)*(0.1425/12)*1 = $12.47. I = 1350*(0.1425/12)*1 = $16.03. Int. Saved = 16.03 - 12.47 =
March 23, 2016

math
T = Time until app. 60*(T-10/60) = 45*(T+5/60), 60T-10 = 45T + 3.75, 15T = 13.75, T = 0.91667 h = 55 Min.
March 23, 2016

math !
Glad I could help!
March 23, 2016

math !
A = 15 * 6*8 = 720 Sq. in.
March 23, 2016

math
A = 6*4 + 3*8 == 48 Ft^2, Cost = 20 * 48 =
March 23, 2016

science
4D.
March 23, 2016

Math
(14 2/9)% = (128/9)% = (128/9)%/100% = 128/900 = 32/225 = the ratio.
March 23, 2016

math
12/4 = L/6, L = ?.
March 22, 2016

Physics
M1*V1 + M2*V2 = M1*V + M2*V, 64.8*9.2 + 24.4*0 = 64.8V + 24.4V, 596.16 = 89.2V, V = 6.68 m/s.
March 22, 2016

Physics
a. My answer: 207.5 J/s = 207.5 W. b. Work = F*d = Mg*d = 2400*9.8 * 1.3 = 30,576 Joules. T = 30,576J. * 1s./207.5J. = 147.4 s.
March 22, 2016

physics
Incomplete.
March 22, 2016

Physics
7.90h * 3600s/h = 28,440 s. = 2.84*10^4 s. P = 5.90*10^6/2.84*10^4 = 207.5 J/s. = 207.5 Watts.
March 22, 2016

Physics
a. 6.28/360o = x/82.9o, x = 82.9 * 6.28/360 = 1.45 Radians. b. 6.28rad/rev * 6revs =
March 21, 2016

Whats the answer
2-11x^2-8x+6x^2 = -5x^2-8x+2.
March 21, 2016

electronics
What does Tr and ZT mean?
March 20, 2016

physics 101
30mi/h * 1600m/mi * 1h/3600s. =
March 20, 2016

algebra
Sqrt(39sqrt(6-4)) == Sqrt(39sqrt2) = Sqrt(55.15) = 7.43
March 20, 2016

Algebra
L = Sqrt(x^2+Y^2) = Sqrt(9^2+13^2) = 15.8 Ft.
March 20, 2016

Math
TanA = 60/91 = 0.65934, A = 33.4o. E. of N.
March 20, 2016

Math
X => 3, Y = 2.
March 19, 2016

math help
See your previous post.
March 18, 2016

Math (Grade 12)
1. Equity = 367,685-108,653. 2. 0.564 * Equity =
March 18, 2016

Physics
V^2 = Vo^2 + 2a*d, a = (V^2-Vo^2)/2d = (50^2-300^2)/0.08 = -1,093,750 m/s^2. F = M*a = 0.025 * (-1,093,750) =
March 18, 2016

science
d. 6.67 g/mL.
March 17, 2016

Phy
See previous post: 3-17-16, 10:58 AM.
March 17, 2016

Phy
T1 = T2, T1*Cos45 - T2*Cos45 = 0. So, the hor. components cancel. T1*sin45 + T2*sin45 = 20, Replace T2 with T1: T1*sin45 + T1*sin45 = 20, 2T1*sin45 = 20, 1.414T1 = 20, T1 = 14.14 N. = T2.
March 17, 2016

math
Po = $3,500, T = 3 Years, P = 36 * 104.50 = $3762. Int. = P-Po = 3762 - 3500 = $262. Int. = 3500*r*3 = 262, 10,500r = 262, r = 0.025 = 2.5% = APR.
March 16, 2016

physics
Correction: Vs = 343 m/s. (343+14)/(343-75) * 1000 = 357/268 * 1000 = 1332 Hz.
March 16, 2016

physics
Fr = (Vs+Vt)/(Vs-Vc)*Fc = (443+14)/(443-75) * 1000 = 457/368 * 1000 = 1242 Hz. = Freq. heard by the receiver(Truck driver).
March 16, 2016

Science: Physics
d = 1000N * 1m/500N = 2 m.
March 15, 2016

Math
12/4 does not = 8/24. 8/4 = 24/12. So, the ans. is B.
March 14, 2016

physics
KE = 0.5M*V^2.
March 13, 2016

physics
V^2 = Vo^2 + 2g*h = 0, h = -Vo^2/2g = -80/-19.6 = 4.08 m. = max. ht. 1. PE = M*g*h/2 = 0.1*9.8*(4.08/2) = 2.0 Joules. 2. PE = 0.1*9.8*4.08 = 4.0 Joules. 3. KE = 0.5M*V^2 = 0.5*0.1*80^2 = 320 Joules.
March 13, 2016

Math
P = 11/12.
March 12, 2016

algebra
Width = W feet. Length = W+8 Ft. Width = W+4. Length = W+3. A1 = A2, (W+8)*W = (W+3)*(W+4), W^2 + 8W = W^2 + 4W + 3W + 12, W = 12 Ft., W+8 = 20 Ft.
March 12, 2016

MATH Help!
C = (2/6)n = (1/3)n.
March 12, 2016

Algebra
(1,1), (1,2) (1,3), (1,4), (1,5), (1,6). So, there 6 possibilities per side. 6poss./side * 6sides = 36 Possibilities.
March 12, 2016

math
Bought X eggs @ 18 Cents each. Cost = 18x. (x-8)eggs * 24Cents/egg = 24x-192 = Sale price. Profit = Sale Price - Cost = (24x-192) - 18x = 288 Cents, 6x = 480, X = 80.
March 12, 2016

maths
x/(x+6), (x+1)/(x+4) = 3/4, 4x+4 = 3x+12, X = 8. 8/(8+6 = 8/14 = 4/7.
March 12, 2016

English
I hear the mournful wail of millions, whose chains, heavy and grievous yesterday, are to-day rendered more intolerable by the jubilant shouts that reach them. Which definition of rendered is most likely suited for this line? Caused to be a certain nature Melted down Repeated ...
March 11, 2016

English
To forget them, to pass lightly over their wrongs, and to chime in with the popular theme, would be treason most scandalous. . . Which word is most similar to how chime in is used here? Agree Create Harmonize Resound I have no idea because chime in- means to interject, so ...
March 11, 2016

math
Multiply Eq1 by 3 and Eq2 by -4 and add: 15x - 12y = -21 -12x + 12y = 84 Sum:3x = 63, X = 21. In Eq1, replace x with 21 and solve for y: 15*21 - 12y =-21, 315 - 12y=-21, -12y = -336, Y = 28.
March 11, 2016

Physics
Vp + 80 = 325km/h[240o] CCW. Vp + 80 = -162.5-281.5i, Vp = -242.5 - 281.5i = 372km/h[49.3o] S. of W.
March 10, 2016

Physics
Let L = 100 uh. Xl = 6.28*526.5*10^3*100*10^-6 = 330.642 Ohms = Xc. C = 1/6.28*F*Xc = 1/6.28*526.5*10^3*330.642 = 0.00091 uF = 910 pF. at 526.5 kHz Xl = 6.28*1606.5^10^3*100*10^-6 = 1,009.4 Ohms = Xc. C = 1/(6.28*1606.5*10^3*100*10^-6) = 9.9*10^-4 uF = 990 pF. C = 910 pF to ...
March 10, 2016

Physics
a. d = 50 + 75 + 100 = b. D = 50i + 75[45o] + 100[300o] = 50i + 53+53i + 50-86.6i = 103 - 33.6i = 108.3m[-18.1o] = 18.1o S. of E.
March 10, 2016

English
I think the answer is, because he is pretty much telling the people reform is needed. AFTER an unequivocal experience of the inefficiency of the subsisting federal government, you are called upon to deliberate on a new Constitution for the United States of America. What does ...
March 10, 2016

science
Correction: 3. Wavelength.
March 9, 2016

science
1. Frequency. 2. Friction. 3. Period. 4. Refraction. 5. Reflection or Echo. 6. 7. Decibel.
March 9, 2016

business math
P = Po + Po*r*t = 10,500 + 10,500*(0.12/360)*90 = 10,815 Pesos.
March 9, 2016

math
X Qtrs., 2x Dimes, 2x+4 Nickels, 2(2x+4) Pennies. 25x + 10*2x + 5(2x+4) + 2(2x+4) = 913 Cents, 25x + 20x + 10x+20 + 4x+8 = 913, 59x = 913-28 = 885, X = 15 Qtrs., 30 Dimes, 34 Nickels, 68 Pennies.
March 9, 2016

Math HELP!
Vertical angles.
March 9, 2016

maths
t = 50/60 * 24min. = 20 Min.
March 9, 2016

algebra
Ac + Ar = Ay, pi*r^2 + Ar = 6x*7x, 3.14*(2x)^2 + Ar = 42x^2, 12.57x^2 + Ar = 42x^2, Ar = 29.4x^2 = Area remaining.
March 9, 2016

Math - Help!
Vertical angles.
March 9, 2016

Math
3cakes/4people = 3/4 cake each.
March 8, 2016

Math
5/6 = 105/126, 5/7 = 90/126, 8/9 = 112/126.
March 8, 2016

algebra
1. Yes, Y = 3.5x. 2. No. 4. a^2 + b^2 = c^2. b = 5, c = 15, a = ?. 5. 51 * T = 204. 8. (-5,2), (3,7). L^2 = (3+5)^2 + (7-2)^2 = 89, L = 9.4. 9. (3,-1), (5,-8). m = (-8+1)/(5-3) = 11. (5,2), (x,y), m = 3. m = (y-2)/(x-5) = 3, y-2 = 3(x-5). 12. (-8,2), (x,y), (4,-2). x+8 = 1/2(4...
March 8, 2016

Physics
D = 3 + 4i = 5km[53.1o]. N. of E.
March 8, 2016

Physics
Do you mean 20o N. of E. or N. of w. or what do you mean?
March 8, 2016

Physics
Not Correct: A, C, D.
March 8, 2016

Math
James: X years old, Phil: 2x " " Peter: (2x-3), x + 2x + (2x-3) = 32 X =?
March 7, 2016

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