Thursday
April 24, 2014

Posts by henry


Total # Posts: 8,535

physics
a. V^2 = Vo^2 + 2a.d a = (V^2-Vo^2)/2d. a = (6.14-0)/26.8 = 0.229 m/s^2 b. a = 0.229*cos 32.6 = 0.193 m/s^2, c.

physics
tan A = Y/X = -558/925 = -0.60324 A = -31o D = 925/cos(-31) = 1080 m.

physics
See Related Questions: Tue,6-18-13,9:43PM.

math
translate the phrase into a mathematical expression and then evaluate it. sixtten squared divided by four cubed. The given expression in symbols is? (do not simplify. type exponential notation with positive exponents.) Evaluated, the expression is equal to? (simplify your answer)

Physics
x/0.017 = 22/1 X = 0.374 N. Work=F*d = 0.374 * 0.017=0.0064 Joules.

science
P = V*I = 2000 W. 220I = 2000 I = 9.09 Amps. The current too high for the circuit. If the circuit is properly protected, the fuse will blow or the circuit breaker will trip.

Math
I = Po*r*t = $23. 820*(r/360)*52 = 23 118.44444r = 23 r = 0.194 = 19.4 %.

math
P = Po(1+r)^n P = 8000+1261 = 9261. Po = 8000. n = 1comp./yr. * 3 yrs. = 3 Compounding periods. r = ? 8000(1+r)^3 = 9261. Divide both sides by 8000: (1+r)^3 = 1.157625. Take cube of both sides: 1+r = 1.05 r = 0.05 = 5% per yr.

math
P = Po + Po*r*t = 2600 2000 + 2000*(0.06/360)t = 2600 2000 + t/3 = 2600 t/3 = 2600-2000 = 600 t = 1800 Days. t = 1800Days / 360Days/yr. = 5 Yrs. Ordinary int. is based on 360 days/yr.

business math
C = 0.026*60000 + 0.034*(89400-60000) C = 1560 + 999.60 = $2559.60.

physics
tan A = Y/x = -4/2 = -2.0 A = -63.43o = 63.43o South of East. tan(-63.43) = d/10m d = 10*tan(-63.43) = -20 m = 20 m. South of starting point.

physics
V^2 = Vo^2 + 2g*d. Vo = 12 Ft/s. g = 32FT/s^2. d = 4.5 Ft. Plug the given values into the Eq and solve for V in Ft/s.

physics
V = Vo + a*t a = (V-Vo)/t a=(300-150)/(1/12)h=1800=1800 mi/h^2 V^2 = Vo^2 + 2a*d d = (V^2-Vo^2)/2a. d = (90000-22500)/3600 = 18.75 Miles.

trig
A + B = 90o A + 31 = 90 A = 59o. c*sin 59 = 3. c = 3/sin59 = 3.50 tan 59 = 3/b b = 3/tan 59 = 1.80

Math 116
See previous post.

Math 116
Multiply Eq1 by -6: -6x - 18y = -30 +6x - 6y = 14 Add the Eqs: -24y = -16 Y = 2/3. In Eq1, replace Y with 2/3: x + 3*2/3 = 5 x + 2 = 5 X = 3.

Math 116
Eq1:-6x - 2y = 12 Eq2:12x - 4y = -24 Multiply Eq1 by -4 and Eq2 by 2: 24x + 8y = -48 24x - 8y = -48 Add the Eqs: 48x = -96 X = -2. In Eq1, replace X with -2: -6*(-2) - 2y = 12 12 - 2y = 12 -2y = 12-12 = 0 Y = 0 (-2,0).

Math Algebra1A
Those are the only 2 that I know.

grade 4 math
10^x = 59,187 Take Log of both sides: x*Log 10 = Log 59187 X = Log59187/Log 10 = 4.77223. 10^4.77223 = 59187.

math
Monthly Salary = $X. Spends1/4 * $X = X/4. Bal. = X-X/4 = 3x/4. Spends1/5 * 3x/4 = 3x/20 Bal.=3x/4-3x/20 = 15x/20-3x/20=12x/20= 3x/5. Transportation: 1/10 * 3x/5 = 3x/50 Bal.=3x/5 - 3x/50 = 30x/50-3x/50=27x/50. 27x/50 = 630 27x = 31500 X = $1166.67.

physics
See previous post.

physics
See previous post.

physics
Vavg. = (30+45)/2 = 37.5 km/h.

algebra
Vb + Vc = 22 Vb - Vc = 8 Add the Eqs: 2Vb = 30 Vb = 15 mph. Replace Vb in Eq1 with 15: 15 + Vc = 22 Vc = 7 mph = Velocity of the current.

Math
787/9 = 87 Strawberries/carton. Bal. = 87 * 5 = 435 Strawberries 435strawberries/5strawberries/carton = 87 Cartons.

physics
h = 0.5g*t^2 = 81.6 m. 4.9t^2 = 81.6 t^2 = 16.65 t = 4.08 s. to hit ground. d = 9.13-4.30 = 4.83 m. = Distance the boat traveled in 4.08 s. Speed = d/t = 4.83/4.08 = 1.18 m/s.

Physics
Vo=a*t = 4i7 * 0.0475 = 19.8 m/s[59.70]. a. Xo = 19.8cos59.7 = 10 m/s. b. Yo = 19.8sin59.7 = 17 m/s.

physics
See Related Questions:Sun.6-16-13,11:00 PM.

Math
A. $3800-200 = $3600 = Variable cost. $3600/20Boards = $180/board. C(x) = 180x + 200.

physics
d1 = d2 44(t+0.7) = Vo*t + 0.5a*t^2 44t + 30.8 = 15t + 2.5t^2 2.5t^2 + 15t-44t-30.8 = 0 2.5t^2 -29t - 30.8 = 0 Use Quadratic Formula and get: t = 12.6 s. -

physics
V^2 = Vo^2 + 2g*d V^2 = 0 + 19.6(51.5-12.9) = 756.56 V = 27.5 m/s. d = Vo*t + 0.5g.t^2 = 12.9-1.6 = 11.3 m d = 27.5*t + 4.9t^2 = 11.3 4.9t^2 + 27.5t - 11.3 = 0 Use Quadratic Formula and get: t = 0.385 s.

Physics
Total Energy = KE + PE = 0.5m*V^2 + mg*h = 2*400 + 4*9.8*50 =

Finance
Correction: t = 180 Months.

Finance
P=1626.83 * 15yrs. * 12mo./yr.=292829.40 P = (Po*r*t)/(1-(1+r)^-t) = 292829.40 r = (4%/12)/100% = 0.00333 = Monthly % rate expressed as a decimal. t = 15yrs. * 12mo/yr. = 189 Months. (Po*0.00333*180)/(1-(1.00333)^-180)= 292,829.40 0.5994Po/0.45031 = 292829.40 1.33108Po = 29282...

math
3*8/6/7 = 24/6/7 = 4/7 = 0.571

math
How often is it compounded?

Math
P = Po(1+r)^n. r = 11%//100% = 0.11 = Annual % rate expressed as a decimal. n = 1comp./yr. * 14yrs.=14Compounding periods. Plug the above values into the given Eq and solve for P.

physics
D = Do + (V^2-Vo^2)/2a. D = 24.1m/s*0.366s + (0-(24.1)^2/-16 = 8.82 + 36.3 = 45.1 m.

physics
a. a = (11.3-0)/3.72 = 3.04 m/s^2. b. d = 0.5*3.04*(3.72)^2 = 21.0 m.

physics
c. d2-d1 = 25.5-9.48 = 16.0 m.

physics
a. a = (V-Vo)/t = (5.64-0)/3.36=1.68 m/s^2. d1 = 0.5a*t^2 = 0.5*1.68*(3.36)^2=9.48 m. b. a = (39.8-24.6)/3.36 = 4.52 m/s^2. d2 = 0.5*4.52*(3.36)^2 = 25.5 m. c. d2 d1 = 25.5 9.48 = 16.0 m.

physics
a. V = Vo + at. t = (V-Vo)/a = (49.4-39.4)/4.06 =

Math
P = Po(1+r)^n. r = (4.2%/2)/100% = 0.021 = Semi-annual % rate expressed as a decimal. n = 2comp./yr * 4yrs. = 8 Compounding periods. P = Po(1.021)^8 = 1400 Po = 1400/(1.021)^8 = $1185.56

math
P = Po(1+r)^n r = (5.6%)/12)/100% = 0.00467 = Monthly % rate expressed as a decimal. n = 12comp/yr. * 3yrs. = 36 Compounding periods. P = 3700(1.00467)^36 = $4375.68. Int. = P-Po = 4375.68-3700 = $675.68

physics
h = -3.93t * 4.9t^2 = 4.91 m. 4.9t^2 - 3.93t - 4.91 = 0 Use Quadratic Formula and get: t = 1.48 s.

physics
F = m*a = 89 * 0.29 = 25.8 N. d = 25.8N/2100N * 1m = 0.0123 m.

Physics
Va = 5400rev/min*1min/60s*6.28rad/rev = 565.2 rad/s. t = (12rev/5400rev) * 60s = 0.133 s. V = Vo + at = 0 at = -Vo a = -Vo/t = -565/0.133 = -4248 rad/s^2.

math
ht = X Ft. Base = X-5) Area = B/2 * h = 42. (x-5)/2 * x = 42 (x-5)x = 84 x^2-5x = 84 x^2-5x-84 = 0 (x+7)(x-12) = 0 X = -7, and 12 Ft. = ht. Base = 12-5 = 7 Ft.

physics
a=(V-Vo)/t = (-40-25)/0.01=-6500 m/s^2. F = m*a = 0.055 * -6500 = -358 N.

GEOMETRY I BEG YOU PLEASE HUHUHU
-sqrt(7) = -2.65 Y(-2.65,6), W(-2,3), h(5,12). W is between y and h.

math
tan35 = h/360. h = 360*tan 35 = 252 Ft.

Intermediate algebra, concepts and graphs
Step 1: h = -16t^2+64t+80=128.

Intermediate algebra, concepts and graphs
Step 1: h = -16t^2+64t+80=128.

Intermediate algebra, concepts and graphs
t^2-4t-5=-8 (t-1)(t-3)=0

Intermediate algebra, concepts and graphs
t^2-4t-5=-8

Intermediate algebra, concepts and graphs
My post was rejected.

Physics
V = d/t = 80/2 = 40 mi/h.

PLEASEEE GEOMETRY
H(-4,5). J(-1,10). I(1,sqrts). Point J is between H and I.

geometry
Answer: D.

GEOMETRY
O = 3*sqrt(2) = 4.24. N = 2*sqrt(5) = 4.47. M = 5. N is between O and M.

physics
Zero Degrees.

Geometry
post it.

Geometry
As = pi*r^2 + pi*D*h As = 3.14*100 + 3.14*20*42 = 2953 m^2.

physics
Zero Degrees.

power dissipation please help
P = V*I = 2 * 20 = 40 mW. = 0.04 W.

transformers
Z1 = (25)^2 * 2x = 1250k Ohms I1 = 50/1250k = 0.04 mA.. i

physics
See previous post.

physics
See previous post.

physics
See previous post.

physics
See previous post.

physics
See previous post.

physics
V^2 = Vo^2 + 2ad a=(V^2-Vo^2)/2d=(900-0)/7400=0.122 m/s^2 d2 = 30m/s * 410s = 12300 m. d3 = (V^2-Vo^2)/2a d3 = (0-900)/-0.130 = 6923 m.

Physics
Shorted.

Math
1. The diagonal divides the rhombus into 2 congruent triangles. The altitude bisects the diagonal. (16/2)^2 + Y^2 = 10^2 Y^2 = 100-64 = 36 Y = 6 = Altitude. Area = 2(16/2 * 6) = 96 in^2.

Math
2. Decagon: 10 sides. Area = 2.94*r^2 = 2.94*4^2 = 47 cm^2.

College Level Physics
d = 2.5m/s * 6min*60s/min = 900 m. Work = F*d = 145cos30 * 900 = 443,856 J. = 444 kJ.

Algebra
x^2/12 + 11x/9 = 300 Multiply both sides by 36: 3x^2 + 44x = 10800 3x^2 + 44x - 10800 = 0 Use Quadratic Formula: X = 53.1 mi/h.

math
P = Po(1+r)^t P = 1320(1.08)^5 = 1940 Students.

math
Correction: Biweekly Gross = 38400/26 = 1476.92

math
Annual Gross = 24 * 1600 = $38400. Biweekly Gross = 38600/26 = 1476.92

Physical Science
1. V = L*F = 0.01*5 = 0.05 m/s=50 mm/s. 4. Changes speed.

Math>> Help!!
Tan A = Y/X = 4/3 = 1.3333. A = 53.13o. h = 20*sin53.13 = 16 Ft.

Please Help!! Math
Depth = X Ft. Width = 2X Ft. Length = 4X Ft. Vol. = 4x*2x*x = 1728 Ft^3 8x^3 = 1728 x^3 = 216 X = 6 Ft. 2X = 12 Ft. 4X = 24 Ft.

HELP!!! Math
Width = X Ft. Length = 3X/2 Ft. Area = (3x/2) * X = 15,000 Ft^2 Multiply both sides by 2: 3x * x = 30.000 3x^2 = 30000 x^2 = 10000 X = 100 Ft^2. 3x/2 = (3*100)/2 = 150 Ft^2

Business
If a family planned to spend $370 for food during March but only spent $344, this difference would be referred to as a:

Math
E. None of these.

Physics
Please clarify your problem, and show all units.

physics
A car moving with a velocity of 24meters per seconds,acceleration for 15seconds at a rate of 1meter per second square,calculate the final velocity of the car

math
0.6*8 = 4.8 0z of sugar. 8-4.8 = 3.2 oz of water. Sugar = 5%. %Water = 100-5 = 95. (3.2+w)/(4.8 + (w+3.2)) = 0.95 Cross multiply: 3.2+w = 4.56+0.95w+3.04 w-.95w = 4.56+3.04 0.05w = 7.6 W = 88 oz. of water added.

Algebra
See previous post.

physics
0.5g*t^2 = 40. 4.9t^2 = 40 t^2 = 8.16 t = 2.86 s.

Physics
a = (V-Vo)/t = (10-0)/5 = 2 m/s^2.

finance
D.

physics
Ri = (102-92)/(31.9-10.3) = 0.463 Ohms, internal resistance. E = 102 + 10.3*0.463 = 107 Volts. Or E == 92 + 31.9*0.463 = 107 Volts.

math
Cost = 80*3.50 = $280. 0.9*80 = 72 Sold. 72*P = 1.6*280 P = $6.22 = Selling price per dinner.

algebra
(x^2z^5)/(x^6z^4) = X^-4*Z = Z/X^4.

Math
Incomplete.

Science
P1*V1 = P2*V2 V2 = (P1/P2) * V1.

physics
See Related Questions: Sat,6-1-13,10:49 Am.

physics
Correction: Dc = 0.7g/cm^3.

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