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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Complex_Numbers/479667: Write the Expression in the standard form a+bi (6-8i)+(4+7i) 1 solutions Answer 328618 by Alan3354(30993)   on 2011-08-09 10:19:20 (Show Source): You can put this solution on YOUR website! (6-8i)+(4+7i) ------------ Add the real parts, then add the imaginary parts.

Money_Word_Problems/479668: Assuming you currently meet your monthly expenses with no left over to speak of, how much more money a month do you need to make in order to pay off your loan in 20 years instead of 25? Is this reasonable? 1 solutions Answer 328617 by Alan3354(30993)   on 2011-08-09 10:18:14 (Show Source): You can put this solution on YOUR website! Depends on the size of the loan. Google "Amortization" for specific numbers.

Surface-area/479670: The diagonal of a square measures 14 inches. What is the length of the sides? 1 solutions Answer 328616 by Alan3354(30993)   on 2011-08-09 10:16:54 (Show Source): You can put this solution on YOUR website! Solve for s

Linear-equations/479624: what is the y-intercept of the line that contains the point (-4,0) and (0,-4) by graphing? 1 solutions Answer 328612 by Alan3354(30993)   on 2011-08-09 10:02:44 (Show Source): You can put this solution on YOUR website! Hint: The y-axis is crossed at x = 0.

Surface-area/479665: Find the surface area of a hemisphere given that the radius of the great circle is 6.2 centimeters 1 solutions Answer 328611 by Alan3354(30993)   on 2011-08-09 10:00:18 (Show Source): You can put this solution on YOUR website! for the whole sphere The round part is half of that. ----------------------------- If it's a solid, like 1/2 of a melon, the flat surface's area is

Travel_Word_Problems/479546: A ball is thrown vertically upward at a velocity of 15 feet per second from a bridge that is 55 feet above the level of the water. The height h, in feet, of the ball above the water at the time t in seconds after it is thrown is h = 16t^2 + 20t - 48 Find the time when the ball strikes the water 1 solutions Answer 328597 by Alan3354(30993)   on 2011-08-09 07:53:55 (Show Source): You can put this solution on YOUR website! h = 16t^2 + 20t - 48 --------------------- If the initial upward speed is 15 ft/sec and the bridge is 55 ft above the water, the eqn would be h(t) = -16t^2 + 15t + 55 ------------------------- The equation you gave shows increasing altitude with time. It starts at -48 feet and never comes down.

Volume/479589: Find the volume of the cylinder. Use these dimensions: radius=2.5, height=6.5. 1 solutions Answer 328595 by Alan3354(30993)   on 2011-08-09 07:47:19 (Show Source): You can put this solution on YOUR website!

Equations/479593: 10 to the power of (3) + 10 to the power of (5) = ? a) 10 to the power of (8) b) 10 to the power of (15) c) 20 to the power of (8) d) 2 to the power of (15) e) 101 000 The sample test i have from my school says that the correct answer is (d), could this be correct? Thanks! 1 solutions Answer 328594 by Alan3354(30993)   on 2011-08-09 07:45:42 (Show Source): You can put this solution on YOUR website! 10 to the power of (3) + 10 to the power of (5) = ? ----------- e ------------- , but that's not what is asked.

Volume/479611: find the volume of a cube with sides of length 2x. 1 solutions Answer 328593 by Alan3354(30993)   on 2011-08-09 07:42:28 (Show Source): You can put this solution on YOUR website!

Travel_Word_Problems/479513: connie walks from her home to the bicycle repair shop at 6km/h and then bikes home at 20 km/h. If the total traveling time is 39 minutes, how far is it from her home to the repair shop? 1 solutions Answer 328532 by Alan3354(30993)   on 2011-08-08 21:57:12 (Show Source): You can put this solution on YOUR website! connie walks from her home to the bicycle repair shop at 6km/h and then bikes home at 20 km/h. If the total traveling time is 39 minutes, how far is it from her home to the repair shop? ----------------- Her avg speed = 2*6*20/(6+20) = 60/13 km/hr d = r*t = (60/13)*(39/60) d = 3 km

Volume/479501: Find the volume of a cone with a height of 7.1 m and a circular base whose radius is 3.2 m. Use 3.14 for pi. 1 solutions Answer 328524 by Alan3354(30993)   on 2011-08-08 21:17:59 (Show Source): You can put this solution on YOUR website!

Numeric_Fractions/479491: Find the exact value of the volume of a can of sauerkraut with a diameter 12 centimeters and height of 6 centimeters. Include correct units with your solution. Use "pi" in place of the pi symbol. 1 solutions Answer 328523 by Alan3354(30993)   on 2011-08-08 21:17:02 (Show Source): You can put this solution on YOUR website! r = 6 h = 6

test/479497: If it takes 10 minutes to cook 6 eggs, how many minutes will it take to cook 12 eggs? 1 solutions Answer 328520 by Alan3354(30993)   on 2011-08-08 21:12:54 (Show Source): You can put this solution on YOUR website! It depends. Are they cooked serially, one after another? Or are they all put in the pan together?

Numeric_Fractions/479490: Exactly how many cubic inches of air can a fully inflated basketball hold if its radius is 4.8 inches? Include correct units with your solution. Use "pi" in place of the pi symbol. 1 solutions Answer 328518 by Alan3354(30993)   on 2011-08-08 21:11:25 (Show Source): You can put this solution on YOUR website!

logarithm/479415: Evaluate the following logarithm by changing the base to the natural log. round the result to 3 decimal places. Log[27]35 1 solutions Answer 328482 by Alan3354(30993)   on 2011-08-08 18:49:16 (Show Source): You can put this solution on YOUR website! =~ 1.079 ------------------ gives the same result

Travel_Word_Problems/479437: What is the distance traveled at a speed of 60 km per hour, for 2 hours 1 solutions Answer 328481 by Alan3354(30993)   on 2011-08-08 18:45:11 (Show Source): You can put this solution on YOUR website! Use d = r*t distance = rate*time

Polygons/479357: the measure of one interior angle of a 75 sided regular polygon. 1 solutions Answer 328480 by Alan3354(30993)   on 2011-08-08 18:44:36 (Show Source): You can put this solution on YOUR website! = 180*(75-2)/75 degrees

Quadratic_Equations/479420: this is the equation: ( 9x squared - 3x - 6 ) divided by ( 6x + 4) 1 solutions Answer 328477 by Alan3354(30993)   on 2011-08-08 18:37:32 (Show Source): You can put this solution on YOUR website! this is the equation: ( 9x squared - 3x - 6 ) divided by ( 6x + 4) ----------- That's not an equation. Equations have equal signs. = = =

Linear-equations/479396: Factor by grouping: x2 – 6x + 5x – 30 1 solutions Answer 328467 by Alan3354(30993)   on 2011-08-08 18:15:57 (Show Source): You can put this solution on YOUR website! Factor by grouping: x2 – 6x + 5x – 30 ---------------------------- x(x - 6) + 5(x - 6) = (x+5*)*(x-6)

test/479383: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand. 1 solutions Answer 328464 by Alan3354(30993)   on 2011-08-08 18:14:08 (Show Source): You can put this solution on YOUR website! I am a mind reader.

Permutations/479358: I don't understand how to solve this question? This is permutarions. How many ways can we pick a 6 letter "word" from the word HOKIES? 1 solutions Answer 328437 by Alan3354(30993)   on 2011-08-08 16:33:34 (Show Source): You can put this solution on YOUR website! The 1st choice is 1 of 6, then 1 of 5, 1 of 4, etc --> 6*5*4*3*2*1 = 720 ---------- 6! = 720 6! is 6 factorial

Linear-equations/479281: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x – 8y = 48 11x + 3y = -105.5 1 solutions Answer 328435 by Alan3354(30993)   on 2011-08-08 16:16:41 (Show Source): You can put this solution on YOUR website! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x – 8y = 48 11x + 3y = -105.5 ----------------- The 1st eqn is x - 2y = 12 ---------- x - 2y = 12 11x + 3y = -105.5 ----------------- Multiply the 1st eqn by 3 and the 2nd by 2. Add them, eliminate the y terms. etc.

Linear-equations/479280: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -2x – 8y = 22 -6x – y = 20 1 solutions Answer 328434 by Alan3354(30993)   on 2011-08-08 16:12:43 (Show Source): You can put this solution on YOUR website! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -2x – 8y = 22 -6x – y = 20 --------------- Multiply the 2nd eqn by 8, then subtract one from the other. Solve for x. Then sub for x and find y.

Linear-equations/479279: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + y = 26 -6x + y = -37 1 solutions Answer 328433 by Alan3354(30993)   on 2011-08-08 16:11:02 (Show Source): You can put this solution on YOUR website! 3x + y = 26 -6x + y = -37 --> y = 6x-37 -------------- Sub for y in the 1st equation and find x. Then use either eqn to find y.

Probability-and-statistics/479351: What is the first whole number that you would have to use the letter "A" in order to spell out the actual number? 1 solutions Answer 328432 by Alan3354(30993)   on 2011-08-08 16:07:21 (Show Source): You can put this solution on YOUR website! ate. quatro? ------------ Ok, one thousand.

Rate-of-work-word-problems/479342: Woman 1 can do a job in 2 hours and woman 2 can do the same job in 3 hours. How long would it take if they work together/ 1 solutions Answer 328431 by Alan3354(30993)   on 2011-08-08 16:05:46 (Show Source): You can put this solution on YOUR website! Hint: Look at what part of the job they do per hour, not hours per job.

Triangles/479327: can a triangle be formed by three segments of lengths of 2 inches, 3 inches, and 6 inches 1 solutions Answer 328430 by Alan3354(30993)   on 2011-08-08 16:00:58 (Show Source): You can put this solution on YOUR website! No. Cut some strings or sticks, and try it.

Quadratic_Equations/479335: Find 2 positive numbers whose sum is 20 such that the sum of their squares is a minimum. 1 solutions Answer 328429 by Alan3354(30993)   on 2011-08-08 15:27:25 (Show Source): You can put this solution on YOUR website! 10 & 10

test/479208: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand. 1 solutions Answer 328425 by Alan3354(30993)   on 2011-08-08 14:31:02 (Show Source): You can put this solution on YOUR website! I can read minds, I just realized.

expressions/479322: 3/2-(-2 3/4) how do i solve this i have to evaluate the expression 1 solutions Answer 328424 by Alan3354(30993)   on 2011-08-08 14:26:56 (Show Source): You can put this solution on YOUR website! 3/2-(-2 3/4) = 3/2 -(-11/4) = 6/4 + 11/4 = 17/4

Rectangles/479318: What is the length of a room with l =10 ft and w = 15ft 1 solutions Answer 328423 by Alan3354(30993)   on 2011-08-08 14:25:55 (Show Source): You can put this solution on YOUR website! Probably 10 feet. You say l = 10