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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Equations/531583: how do you do 9=3y-1 2 1 solutions Answer 350508 by Alan3354(30993)   on 2011-11-14 18:43:05 (Show Source): You can put this solution on YOUR website! Define "do"

Radicals/531564: square root of x over 40 1 solutions Answer 350507 by Alan3354(30993)   on 2011-11-14 18:41:29 (Show Source): You can put this solution on YOUR website! What about it?

Travel_Word_Problems/531578: a rate equivalent to 720 mi a hr 1 solutions Answer 350505 by Alan3354(30993)   on 2011-11-14 18:39:22 (Show Source): You can put this solution on YOUR website! 720 mi/hr = 17280 miles/day

Numbers_Word_Problems/531576: The sum of two numbers is 77. One number is 7 more than the other. Find the numbers. 1 solutions Answer 350504 by Alan3354(30993)   on 2011-11-14 18:38:27 (Show Source): You can put this solution on YOUR website! 77/2 = 38.5 7/2 = 3.5 --------- 38.5 - 3.5 = 35 38.5 + 3.5 = 42

Equations/531570: what is the answer to: x^2+2xy+2x+y^2+2y-8? 1 solutions Answer 350503 by Alan3354(30993)   on 2011-11-14 18:37:25 (Show Source): You can put this solution on YOUR website! What is the question?

Travel_Word_Problems/531572: If someone traveled 60 miles on foot, how long was the journey in hrs traveled? 1 solutions Answer 350502 by Alan3354(30993)   on 2011-11-14 18:36:40 (Show Source): You can put this solution on YOUR website! It depends on the speed. Whether he traveled on foot, walked on his hands or crawled is not relevant. -------- d = r*t t = d/r t = 60/r, r in mi/hr

Travel_Word_Problems/531385: A crow flies 10.5 miles against the wind then returns with the wind. the first flight takes 35 minuets and the return flight takes 15 minuets. how many miles per minuet does the crow fly? how fast in the wind flowing? 1 solutions Answer 350449 by Alan3354(30993)   on 2011-11-14 15:41:12 (Show Source): You can put this solution on YOUR website! A crow flies 10.5 miles against the wind then returns with the wind. the first flight takes 35 minuets and the return flight takes 15 minuets. how many miles per minuet does the crow fly? how fast in the wind flowing? ---------------- A minuet is a dance from the 17-18th century. Maybe you mean minutes? -------- 10.5 miles in 35 mins = 0.3 mi/minute 10.5 miles in 15 mins = 0.7 mi/minute ------- The crow's speed is the average, (0.3 + 0.7)/2 = 0.5 miles/minute The windspeed is the difference, 0.7 - 0.5 = 0.2 mi/minute

Equations/531412: The head of a fish is 1/3 its body. The tail of the fish is as long as its head and its body combined. The total length of the fish is 48cm. How long is each part of the fish? 1 solutions Answer 350437 by Alan3354(30993)   on 2011-11-14 15:07:35 (Show Source): You can put this solution on YOUR website! The head of a fish is 1/3 its body. The tail of the fish is as long as its head and its body combined. The total length of the fish is 48cm. How long is each part of the fish? ----------------- Head = 48/3 = 16 cm Tail = 16 + 48 = 64 cm ------------ Who told you that?

Points-lines-and-rays/531382: Write the equation for the vertical line that contains point E(10, –3)unsure about it 1 solutions Answer 350432 by Alan3354(30993)   on 2011-11-14 14:33:24 (Show Source): You can put this solution on YOUR website! x = 10

Expressions-with-variables/531390: how do you solve: 1/5w = 2 1 solutions Answer 350431 by Alan3354(30993)   on 2011-11-14 14:32:27 (Show Source): You can put this solution on YOUR website! Multiply by 5

Rectangles/531384: write all possible dimensions of rectangles with the perimeter of 30 1 solutions Answer 350430 by Alan3354(30993)   on 2011-11-14 14:31:47 (Show Source): You can put this solution on YOUR website! P = 2L + 2W 30 = 2L + 2W L + W = 15

Rational-functions/526461: 4-5(7x-3) 1 solutions Answer 350413 by Alan3354(30993)   on 2011-11-14 12:27:56 (Show Source): You can put this solution on YOUR website! 4-5(7x-3) = 4 -35x + 15 = -35x + 19

Pythagorean-theorem/525922: What is the perimeter of a right triangle if both legs are 3 cm? 1 solutions Answer 350407 by Alan3354(30993)   on 2011-11-14 12:04:31 (Show Source): You can put this solution on YOUR website! Perimeter = P =~ 10.24 cm

Exponential-and-logarithmic-functions/528806: Dad dreamed that he put $1 on the first square,$2 on the second, $4 dollars on the third, and so on, doubling the amount each time.If it costs $65,535 to cover all the squares,how many squares were in Dad's dream? 1 solutions Answer 350406 by Alan3354(30993)   on 2011-11-14 12:01:09 (Show Source): You can put this solution on YOUR website! Dad dreamed that he put $1 on the first square,$2 on the second, $4 dollars on the third, and so on, doubling the amount each time.If it costs $65,535 to cover all the squares,how many squares were in Dad's dream? --------------------------------- 65535 = 2^16 - 1 --> 16 squares

Rate-of-work-word-problems/531211: An air rescue plane averages 300 miles per hour in still air. It carries fuel for 5 hours of flying time. If, upon takeoff, it encounters a head wind of 30 miles per hour, how far can it fly and return safely? (Assume that the wind remains constant) 1 solutions Answer 350405 by Alan3354(30993)   on 2011-11-14 11:56:29 (Show Source): You can put this solution on YOUR website! An air rescue plane averages 300 miles per hour in still air. It carries fuel for 5 hours of flying time. If, upon takeoff, it encounters a head wind of 30 miles per hour, how far can it fly and return safely? (Assume that the wind remains constant) -------------------- The plane's avg groundspeed for the round trip is 2*330*270/(330 + 270) = 297 mi/hr Round trip distance = 5*297 = 1485 miles One way = 742.5 miles

Inequalities/529820: 2n+1>-3 1 solutions Answer 350404 by Alan3354(30993)   on 2011-11-14 11:50:33 (Show Source): You can put this solution on YOUR website! 2n+1>-3 Subtract 1 2n > -4 Divide by 2 n > -2

Travel_Word_Problems/531299: Ryan drives for 2 hours at 60 km/h. Joseph rides his bike for 4 hours at 30 km/h. What is the ratio of the distance traveled by Ryan to the distance traveled by Joseph? 1 solutions Answer 350403 by Alan3354(30993)   on 2011-11-14 11:48:14 (Show Source): You can put this solution on YOUR website! They're the same distance, 1:1

expressions/531043: Can I have help on the steps to solve this equation: 12=(c-6)÷2 1 solutions Answer 350339 by Alan3354(30993)   on 2011-11-13 21:34:36 (Show Source): You can put this solution on YOUR website! 12 = (c-6)/2 Multiply both side by 2 Add 6

Systems-of-equations/531107: whats the answer to 8x-3-5=2x+7 1 solutions Answer 350337 by Alan3354(30993)   on 2011-11-13 21:31:45 (Show Source): You can put this solution on YOUR website! That's not a question, it's an equation.

Miscellaneous_Word_Problems/531100: What is 6/7 of a ton? what is 3/4 of that answer? 1 solutions Answer 350336 by Alan3354(30993)   on 2011-11-13 21:30:29 (Show Source): You can put this solution on YOUR website! It's 6/7 of a ton, ~ 86% of a ton. 3/4 of that = (6/7)*(3/4) = 9/14 of a ton.

Systems-of-equations/531109: whats the answer to 8x-3-5=2x+7 1 solutions Answer 350335 by Alan3354(30993)   on 2011-11-13 21:29:08 (Show Source): You can put this solution on YOUR website! What's the question?

Linear-systems/531104: how do i solve these equations for an ordered triple? x+Y-5z=-5 y-2z=14 4y-2z=8 1 solutions Answer 350334 by Alan3354(30993)   on 2011-11-13 21:27:51 (Show Source): You can put this solution on YOUR website! You can use elimination & substition. There's also Cramer's rule, and Gauss-Jordan reduction. I prefer determinants.

test/530598: I need a tutoring in math 1 solutions Answer 350168 by Alan3354(30993)   on 2011-11-13 02:27:13 (Show Source): You can put this solution on YOUR website! On what?

Numbers_Word_Problems/530590: Need help with a word problem: 5s/6+7>-3 1 solutions Answer 350161 by Alan3354(30993)   on 2011-11-13 00:45:15 (Show Source): You can put this solution on YOUR website! How is that a "word problem?"

Triangles/530512: Can you make a triangle with side lengths: 9, 11, and 2? 1 solutions Answer 350106 by Alan3354(30993)   on 2011-11-12 20:18:31 (Show Source): You can put this solution on YOUR website! No

Quadratic-relations-and-conic-sections/530424: Hi, I need help on a problem. My problem is to see what are the intercepts of the points ( -2,0) and ( 2,0) on a hyperbola graph? Thank you and i hope you can anser my problem as soon as possible. 1 solutions Answer 350037 by Alan3354(30993)   on 2011-11-12 15:44:04 (Show Source): You can put this solution on YOUR website! I don't know what that means. What's a hyperbola graph? ----------- (-2,0) & (2,0) are the x-intercepts ???

Volume/530448: what are two possible integers of a triangular prism with volume 180m cubed and lenght 10 1 solutions Answer 350036 by Alan3354(30993)   on 2011-11-12 15:42:08 (Show Source): You can put this solution on YOUR website! 1 & 18 2 & 9 3 & 6

Graphs/530420: Find the center and radius of the circle. x^2-10x+y^2+2y+17=0 Thank You! 1 solutions Answer 350034 by Alan3354(30993)   on 2011-11-12 15:39:04 (Show Source): You can put this solution on YOUR website! Find the center and radius of the circle. x^2-10x+y^2+2y+17=0 ------------------ Complete the squares for x and for y x^2-10x+y^2+2y+17=0 x^2-10x+y^2+2y = -17 ------------- Center at (5,-1) r = 3

Travel_Word_Problems/530416: if a car drives at 76 km/hr, how far does the car go in 8 hours? 1 solutions Answer 350032 by Alan3354(30993)   on 2011-11-12 15:30:40 (Show Source): You can put this solution on YOUR website! d = r*t

Linear-equations/530311: Give the slope and the y intercept of the line with the given equation. Then, graph the linear equation. y=2x+7 1 solutions Answer 350004 by Alan3354(30993)   on 2011-11-12 10:16:19 (Show Source): You can put this solution on YOUR website! slope m = 2 y-int b = 7

Trigonometry-basics/530271: How do we find an angle θ that its cos equals 7π/4? Can that be explained analytically? Thanks so much in advance 1 solutions Answer 350002 by Alan3354(30993)   on 2011-11-12 10:12:16 (Show Source): You can put this solution on YOUR website! 7pi/4 is greater than 1. You sure that's what you meant to ask?