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Alan3354 answered: 30973 problems
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Trigonometry-basics/600374: simplify the expression: sin5pie/3 cos5pie/3-cos5pie/3 sin pie/3 1 solutions Answer 379300 by Alan3354(30993)   on 2012-04-17 22:59:25 (Show Source): You can put this solution on YOUR website! simplify the expression: sin5pie/3 cos5pie/3-cos5pie/3 sin pie/3 ---------- It's the Greek letter pi, not the dessert, pie.

Travel_Word_Problems/600380: A plane travels from LA to NY at an average speed of 600 mph. On the way back from NY to LA it travels at an average speed of 400 mph. What is the average speed of the entire trip? 1 solutions Answer 379298 by Alan3354(30993)   on 2012-04-17 22:57:05 (Show Source): You can put this solution on YOUR website! A plane travels from LA to NY at an average speed of 600 mph. On the way back from NY to LA it travels at an average speed of 400 mph. What is the average speed of the entire trip? -------------- Avg speed for a RT, or 2 segments of equal length is 2*600*400/(600 + 400) = 480 mph ------------ The distance is not relevant.

Polynomials-and-rational-expressions/600308: how to solve 12x squared minus 75 1 solutions Answer 379262 by Alan3354(30993)   on 2012-04-17 21:28:12 (Show Source): You can put this solution on YOUR website! how to solve 12x squared minus 75 --------------- It's not an equation, so there's nothing to solve.

Expressions-with-variables/600287: Isolate P in the formula P(Q+6)=P-12 1 solutions Answer 379250 by Alan3354(30993)   on 2012-04-17 21:12:45 (Show Source): You can put this solution on YOUR website! Isolate P in the formula P(Q+6)=P-12 ----- P(Q+6)=P-12 PQ+6P - P = -12 PQ + 5P = -12 P(Q+5) = -12 P = -12/(Q+5)

logarithm/600323: log16 32+x=3? 1 solutions Answer 379247 by Alan3354(30993)   on 2012-04-17 21:09:24 (Show Source): You can put this solution on YOUR website! duplicate

Square-cubic-other-roots/600329: I have the question 75 squared + 65 squared = c Squared and I rounded it to get 17 and im wondering if I did that correctly? 1 solutions Answer 379246 by Alan3354(30993)   on 2012-04-17 21:08:47 (Show Source): You can put this solution on YOUR website! I have the question 75 squared + 65 squared = c Squared and I rounded it to get 17 and im wondering if I did that correctly? ------------ Did you solve for c? How did you get 17? c =~ 99.247

logarithm/600325: How do you solve log16 32=x+3? ive tried 16^x+3=32 1 solutions Answer 379238 by Alan3354(30993)   on 2012-04-17 20:53:58 (Show Source): You can put this solution on YOUR website! How do you solve log16 32=x+3? is a constant --------- =~ 1.25 x =~ -1.75

Quadratic-relations-and-conic-sections/600313: 13xx+13yy=49. I need to decide if it is an ellipse, parabola, hyperbola, or a circle. Once I decide I need to put into the right equation and be able to graph it. 1 solutions Answer 379237 by Alan3354(30993)   on 2012-04-17 20:50:18 (Show Source): You can put this solution on YOUR website! 13xx+13yy=49. I need to decide if it is an ellipse, parabola, hyperbola, or a circle. Once I decide I need to put into the right equation and be able to graph it. ---------------- I think you mean A circle, center at the Origin, radius sqrt(49/13)

Travel_Word_Problems/600260: How long will it take a ship traveling 35 mph to go 2.5 miles? Thank- you. 1 solutions Answer 379232 by Alan3354(30993)   on 2012-04-17 19:59:27 (Show Source): You can put this solution on YOUR website! How long will it take a ship traveling 35 mph to go 2.5 miles? -------- d = r*t t = d/r

Surface-area/600147: Area of a triangle A=8.5yds 6.1yds 1 solutions Answer 379209 by Alan3354(30993)   on 2012-04-17 16:44:32 (Show Source): You can put this solution on YOUR website! Area of a triangle A=8.5yds 6.1yds ------------ I don't know what that means.

Geometry_Word_Problems/600149: Dolores is on a bridge that is 45 feet above a lake. She sees a boat at a angle of depression. What is Delores’s approximate horizontal distance from the boat? A. 26 feet B. 32 feet C. 90 feet D. 78 feet 1 solutions Answer 379207 by Alan3354(30993)   on 2012-04-17 16:29:25 (Show Source): You can put this solution on YOUR website! Dolores is on a bridge that is 45 feet above a lake. She sees a boat at a angle of depression. What is Delores’s approximate horizontal distance from the boat? ----------------- d = horiz distance tan(angle) = 45/d d = 45/tan(angle) feet

Equations/600169: It has been a while that I have done fractions. I'm trying to help my son do his 4th grade homework. Here is the problem. 8 2/7 - 5 5/7= There is similar problems like that but I want to get a general idea on how to work them all step by step to help him with the rest. 1 solutions Answer 379206 by Alan3354(30993)   on 2012-04-17 16:20:31 (Show Source): You can put this solution on YOUR website! 8 2/7 - 5 5/7= ------------ Change to improper fractions. 8 2/7 = 58/7 5 5/7 = 40/7 ----- 58/7 - 40/7 = 18/7 ----- Change to mixed number, or not. 18/7 = 2 4/7 Mixed numbers are not good for much.

Exponential-and-logarithmic-functions/600170: Log(2.4x10^-6)= Determine the value of the expression. Question off homework assenment please help with the answer . 1 solutions Answer 379205 by Alan3354(30993)   on 2012-04-17 16:17:45 (Show Source): You can put this solution on YOUR website! Log(2.4x10^-6)= Determine the value of the expression. ------------- I have a calculator. Log(2.4x10^-6)= -5.61978876

Finance/600150: i would like to know more about aldbra like why do the have letters in aldbra 1 solutions Answer 379196 by Alan3354(30993)   on 2012-04-17 15:50:23 (Show Source): You can put this solution on YOUR website! i would like to know more about aldbra like why do the have letters in aldbra -------------- You had to type algebra.com to enter that. Where do you get "aldbra?"

Circles/600101: A wheel turns 765 degrees about its centre. How many revolutions does it turn? 1 solutions Answer 379194 by Alan3354(30993)   on 2012-04-17 15:48:22 (Show Source): You can put this solution on YOUR website! A wheel turns 765 degrees about its centre. How many revolutions does it turn? ------------------ 720 degs = 2 revs --> 2 revs + 45 degs or 765/360 = 2.125 revs

Linear-equations/600087: find y for x=6 1 solutions Answer 379187 by Alan3354(30993)   on 2012-04-17 15:15:28 (Show Source): You can put this solution on YOUR website! find y for x=6 --------------- How is y related to x ?

real-numbers/600127: Can a fraction with a 2 in the numerator equal 1 2 1 solutions Answer 379186 by Alan3354(30993)   on 2012-04-17 15:11:26 (Show Source): You can put this solution on YOUR website! Can a fraction with a 2 in the numerator equal 1 2 ---------- What is 1 2 ?

Polynomials-and-rational-expressions/600144: What is 12a squared - 4a 1 solutions Answer 379184 by Alan3354(30993)   on 2012-04-17 15:07:48 (Show Source): You can put this solution on YOUR website! What is 12a squared - 4a ----- It's a binomial

Quadratic_Equations/600103: how do i find the vertex and axis of symmetry for f(x)= -2x^2-4x+2 ? 1 solutions Answer 379181 by Alan3354(30993)   on 2012-04-17 14:29:42 (Show Source): You can put this solution on YOUR website! how do i find the vertex and axis of symmetry for f(x)= -2x^2-4x+2 ? --------- The axis is x = -b/2a --- The vertex is f(x) where x = -b/2a

Rational-functions/600111: i need to no how to do this problem Find the polynomial of lowest degree with that has the following zeros ) -4, 2/3, 1 1 solutions Answer 379180 by Alan3354(30993)   on 2012-04-17 14:22:26 (Show Source): You can put this solution on YOUR website! Find the polynomial of lowest degree with that has the following zeros ) -4, 2/3, 1 -------- If 4 is a zero, then (x-4) is a factor. --> (x - 4)*(x - 2/3)*(x - 1) = 0 Get rid of the fraction. (x - 4)*(3x - 2)*(x - 1) You can multiply that.

Divisibility_and_Prime_Numbers/600110: 50/80000 1 solutions Answer 379179 by Alan3354(30993)   on 2012-04-17 14:19:04 (Show Source): You can put this solution on YOUR website! duplicate

Geometry_Word_Problems/600121: hello please answer this question how much smaller is the area of a 60cm by 40cm rectangle than that of a square with the same perimeter. 1 solutions Answer 379178 by Alan3354(30993)   on 2012-04-17 14:18:20 (Show Source): You can put this solution on YOUR website! how much smaller is the area of a 60cm by 40cm rectangle than that of a square with the same perimeter. ------------- 60 by 40 = 2400 sq cm 50 by 50 = 2500 sq cm 100 sq cm smaller -------------- A square has the max area for a rectangle of a given perimeter. Any other combination of sides will have less area.

Divisibility_and_Prime_Numbers/600112: can you help me solve 50/80000 and can you show me a quicker way to solve it and can you show me how you done the working out. can you answer the question now. thnx....:) 1 solutions Answer 379177 by Alan3354(30993)   on 2012-04-17 14:04:11 (Show Source): You can put this solution on YOUR website! can you help me solve 50/80000 ------------ It's not solving, just reducing or simplifying. 50/80000 You do the same operation to the numerator and the denominator. Divide both by 10 --> 5/8000 Divide both by 5 --> 1/1600 That's all you do as a fraction. You can use a calculator (or other method) to get 0.000625

Quadratic-relations-and-conic-sections/600116: Which equation represents the equation of a hyperbola? F- x^2=2y G- (3x^2)+(3y^2)+9y=7 H- (2x^2)-(3y^2)+x=10 J- (x^2)+(2y^2)-4x-3y+5=11 1 solutions Answer 379176 by Alan3354(30993)   on 2012-04-17 13:51:22 (Show Source): You can put this solution on YOUR website! Which equation represents the equation of a hyperbola? -------------- A hyperbola equation has different signs for the x^2 and y^2 terms (when they're on the same side of the equal sign). One is +, the other minus. Look for that.

Polygons/600010: find the area of a regular octagon of sides 4cm to 5 significant figures? 1 solutions Answer 379170 by Alan3354(30993)   on 2012-04-17 10:55:08 (Show Source): You can put this solution on YOUR website! find the area of a regular octagon of sides 4cm to 5 significant figures? ---------- For any regular polygon with n sides of length s:

Travel_Word_Problems/600039: a car travels 835 km in ten days at this rate how far will it travel in 20 days 1 solutions Answer 379169 by Alan3354(30993)   on 2012-04-17 10:52:40 (Show Source): You can put this solution on YOUR website! a car travels 835 km in ten days at this rate how far will it travel in 20 days --------- It's twice the time. 2 times as far.

Money_Word_Problems/600048: If Mr. A contributed $1,500 and Mr. B contributed $2,500. Profit of $2000 is make. What is the percentage sharing formula. 1 solutions Answer 379168 by Alan3354(30993)   on 2012-04-17 10:50:54 (Show Source): You can put this solution on YOUR website! If Mr. A contributed $1,500 and Mr. B contributed $2,500. Profit of $2000 is make. What is the percentage sharing formula. --------- It's whatever sharing formula they set up and agreed to.

Money_Word_Problems/600047: If Mr. A contributed $1,500 and Mr. B contributed $2,500. Profit of $2000 is make. How much does Mr. A and B get each? 1 solutions Answer 379167 by Alan3354(30993)   on 2012-04-17 10:49:38 (Show Source): You can put this solution on YOUR website! If Mr. A contributed $1,500 and Mr. B contributed $2,500. Profit of $2000 is make. How much does Mr. A and B get each? ------------ It depends on their agreement.

Quadratic-relations-and-conic-sections/600050: x=y^2 1 solutions Answer 379166 by Alan3354(30993)   on 2012-04-17 10:44:19 (Show Source): You can put this solution on YOUR website! x=y^2 --------- Do you have a question?

Linear-equations/600049: write an equation (6,-6);4x-5y=9 1 solutions Answer 379165 by Alan3354(30993)   on 2012-04-17 10:40:08 (Show Source): You can put this solution on YOUR website! write an equation (6,-6);4x-5y=9 ---------- OK y = 8x - 321 is an equation.

percentage/600033: HELPPPPPPPPPPPPPPP~!!!!!!!!! Hello I want to know what my overall GPA would be for my class.I think i messed up on the final exam:Ugh! Midterm =25%------> 76% Quizes and HomeWork= 25%------->90,100,100,75,66 Final Exam=50%!!:( Suppose I got a 30% What would be my Overall grade? 1 solutions Answer 379157 by Alan3354(30993)   on 2012-04-17 09:40:08 (Show Source): You can put this solution on YOUR website! Hello I want to know what my overall GPA would be for my class.I think i messed up on the final exam:Ugh! Midterm =25%------> 76% Quizes and HomeWork= 25%------->90,100,100,75,66 Final Exam=50%!!:( Suppose I got a 30% What would be my Overall grade? ----------------- Quizes and HomeWork= 25%------->90,100,100,75,66 Average = (90 + 100 + 100 + 75 + 66)/5 = 86.2 --------------- If you got 30% Overall avg = (25*76 + 25*86.2 + 50*30)/100 = (1900 + 2155 + 1500)/100 = 55.55%