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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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absolute-value/657003: Would you please help us by showing the steps to get the correct answer to the following problem? The curriculum says the answer is -12, but we are not getting that answer. -3/4/ + 7 * 0 = negative three times absolute value of four plus seven times zero equals ? We thought that -3 times absolute value of 4 was -12, then add 7 to get 5, then times 0 would be 0, but we were wrong. 1 solutions Answer 409743 by Alan3354(30993)   on 2012-09-25 19:34:59 (Show Source): You can put this solution on YOUR website! -3/4/ + 7 * 0 = negative three times absolute value of four plus seven times zero equals ? We thought that -3 times absolute value of 4 was -12, then add 7 to get 5, then times 0 would be 0, but we were wrong. ========================== Use |...| for absolute value (Shift \) -3*|4| + 7*0 7*0 = 0 ABS of 4 = 4 --> -3*4 = -12 --------- Multiply first, then add.

Travel_Word_Problems/657009: a bicyclist averages 18 km/hr for 20 minutees. How many km did the bicyclist travel? 1 solutions Answer 409742 by Alan3354(30993)   on 2012-09-25 19:31:31 (Show Source): You can put this solution on YOUR website! a bicyclist averages 18 km/hr for 20 minutees. How many km did the bicyclist travel? ------------ 20 min = 1/3 hour --- d = r*t

Travel_Word_Problems/657020: a girl lives 2.2 miles away from school. her car can travel 26 miles on 1 gallon of gas. the tank holds 16.9 gallons of gas. how much will it cost her to go to school if gas costs $3.45 per gallon? 1 solutions Answer 409741 by Alan3354(30993)   on 2012-09-25 19:30:28 (Show Source): You can put this solution on YOUR website! a girl lives 2.2 miles away from school. her car can travel 26 miles on 1 gallon of gas. the tank holds 16.9 gallons of gas. how much will it cost her to go to school if gas costs $3.45 per gallon? --------------- Each way, she uses 2.2 mi/(26 mi/gal) = 2.2/26 gallons Multiply that by $3.45 to get the cost. ---------- The size of the tank is not relevant.

Travel_Word_Problems/657010: What is the acceleration of a car that moves from rest to 60.ft/s in 10.0s? 1 solutions Answer 409740 by Alan3354(30993)   on 2012-09-25 19:28:49 (Show Source): You can put this solution on YOUR website! What is the acceleration of a car that moves from rest to 60.ft/s in 10.0s? ------------ The average acceleration = (60 - 0)/10 ft/sec/sec

Rate-of-work-word-problems/657011: The total number of people working for one company is 123. Another company has 40 fewer people. How many people work for the second company? 1 solutions Answer 409739 by Alan3354(30993)   on 2012-09-25 19:27:39 (Show Source): You can put this solution on YOUR website! The total number of people working for one company is 123. Another company has 40 fewer people. How many people work for the second company? -------------- 123 - 40 people.

Rational-functions/657021: how do you graph the equation 1 solutions Answer 409738 by Alan3354(30993)   on 2012-09-25 19:26:15 (Show Source): You can put this solution on YOUR website! how do you graph the equation ------------ There's no equal sign, so it's not an equation, so it can't be graphed.

test/657022: 3a-a-4 1 solutions Answer 409737 by Alan3354(30993)   on 2012-09-25 19:25:28 (Show Source): You can put this solution on YOUR website! Do you have a question?

Travel_Word_Problems/656939: a car travels 110 feet in 10 seconds , what speed will it be going 1 solutions Answer 409713 by Alan3354(30993)   on 2012-09-25 18:08:05 (Show Source): You can put this solution on YOUR website! a car travels 110 feet in 10 seconds , what speed will it be going ------------- d = r*t r = d/t

Travel_Word_Problems/656945: if there is 200 km to travel and u r traveling at apeed of 80 km per hr how long will it take? How? 1 solutions Answer 409712 by Alan3354(30993)   on 2012-09-25 18:07:15 (Show Source): You can put this solution on YOUR website! if there is 200 km to travel and u r traveling at apeed of 80 km per hr how long will it take? How? ------------------ d = r*t t = d/r

Percentage-and-ratio-word-problems/656951: What is 9z+2>4z+15 1 solutions Answer 409711 by Alan3354(30993)   on 2012-09-25 18:06:24 (Show Source): You can put this solution on YOUR website! What is 9z+2>4z+15 ---------- It's an inequality in z.

Complex_Numbers/656917: Find the limit as x approaches 4 of the function (u^4-256)/(u^3-64) 1 solutions Answer 409696 by Alan3354(30993)   on 2012-09-25 17:28:56 (Show Source): You can put this solution on YOUR website! Find the limit as x approaches 4 of the function (u^4-256)/(u^3-64) --------- = @ u = 4: = 32*8/(16 + 16 + 16) = 256/48 = 16/3

Linear-equations/656915: Write an equation of the line in slope intercept form that passes through the given points (0,-4)(5,-4) 1 solutions Answer 409693 by Alan3354(30993)   on 2012-09-25 17:21:34 (Show Source): You can put this solution on YOUR website! Write an equation of the line in slope intercept form that passes through the given points (0,-4)(5,-4) --------------- y is the same for the 2 points. --> y = -4 ============= Or, y = 0x - 4

Travel_Word_Problems/656894: If I throw a baseball 7.5 m up in the air, how long will it take to get back to my hand? I know that delta x is 7.5m, and I know that I need to find t, for time, and I also know that his acceleration is 9.8 meters per second squared. I used the equation delta x= v1(t) + 1/2(a)(t)^2, and I assumed that v1 would be 0, but I'm not right, and I don't understand why. 1 solutions Answer 409692 by Alan3354(30993)   on 2012-09-25 17:17:31 (Show Source): You can put this solution on YOUR website! If I throw a baseball 7.5 m up in the air, how long will it take to get back to my hand? ------------------- x= v1(t) + 1/2(a)(t)^2, ---- If v1 = 0, then the ball wouldn't go up. v1 is not given. ---------- The time to get to the apogee is the same time to fall back to the hand. The height of the hand is not given, so I assume the 7.5 m is from the hand's height. --------- The ball falls from 7.5 meters h(t) = -4.9t^2 + 7.5 = 0 t^2 = 7.5/4.9 t =~ 1.2372 seconds rising, and the same time falling. Total time =~ 2.4744 seconds

Length-and-distance/656702: The distance from the bottom of the wall to the base of the ladder is 5 feet, and the distance from the floor to the top of the ladder is 12 feet. Find the length of the ladder? 1 solutions Answer 409577 by Alan3354(30993)   on 2012-09-25 07:44:45 (Show Source): You can put this solution on YOUR website! The distance from the bottom of the wall to the base of the ladder is 5 feet, and the distance from the floor to the top of the ladder is 12 feet. Find the length of the ladder? --------- It's a right triangle. The sides are 5 & 12. The length of the ladder is the hypotenuse.

Word_Problems_With_Coins/656641: Number of white marbles:7 Total number of marbles:20 1 solutions Answer 409575 by Alan3354(30993)   on 2012-09-25 07:41:17 (Show Source): You can put this solution on YOUR website! Number of white marbles:7 Total number of marbles:20 ----------- Thx for letting us know. Do you have a question?

Volume/656677: A container in the shape of a cube is filled completely with water. Each of its sides are 20 cm long. If 2400 cm3 is taken out, find the height of the water level in the container. 1 solutions Answer 409574 by Alan3354(30993)   on 2012-09-25 07:38:21 (Show Source): You can put this solution on YOUR website! A container in the shape of a cube is filled completely with water. Each of its sides are 20 cm long. If 2400 cm3 is taken out, find the height of the water level in the container. ------------- Vol = s^3 = 8000 cc Vol also = base area * height = 400*h ----- 8000 - 2400 = 5600 cc remaining 5600 = 400*h h = 14 cm

Trigonometry-basics/656683: how to find if given one angle & one side in trignometry ? 1 solutions Answer 409573 by Alan3354(30993)   on 2012-09-25 07:36:02 (Show Source): You can put this solution on YOUR website! how to find if given one angle & one side in trignometry ? ------------ Not enough info. You need 3 elements to solve a triangle, and at least one has to be a side. (Assuming it's a triangle)

logarithm/656590: evaluate log4^9 1 solutions Answer 409543 by Alan3354(30993)   on 2012-09-24 21:45:09 (Show Source): You can put this solution on YOUR website! evaluate log4^9 = log(262144) =~ 5.41854

Problems-with-consecutive-odd-even-integers/656437: Find four consecutive even integers that sum to 1350. 1 solutions Answer 409512 by Alan3354(30993)   on 2012-09-24 18:38:15 (Show Source): You can put this solution on YOUR website! Find four consecutive even integers that sum to 1350. ---------- 1350/4 = 337.5, the center 334 + 336 + 338 + 340 = 1348 ----- 336 + 338 + 340 + 342 = 1356 No such even integers

test/656352: 3.45 1 solutions Answer 409509 by Alan3354(30993)   on 2012-09-24 18:22:10 (Show Source): You can put this solution on YOUR website! 3.45 ========== Do you have a question?

Equations/656396: Hi , Thank you for your patience , I am trying to help my daughter with her math equation , I havent been able to figure it out. 6/x =18/x=x/10 I am supposed to figure out what the x number are . 1 solutions Answer 409508 by Alan3354(30993)   on 2012-09-24 18:20:48 (Show Source): You can put this solution on YOUR website! 6/x =18/x=x/10 ----------------- Too many equal signs

Equations/656329: what is abcissa 1 solutions Answer 409457 by Alan3354(30993)   on 2012-09-24 16:33:16 (Show Source): You can put this solution on YOUR website! what is abcissa ---------- It's the distance from the y-axis, positive or negative.

Money_Word_Problems/656234: A worker's take home pay is $492, after deductions totaling 40% of the gross pay have been subtracted. What is the gross pay? 1 solutions Answer 409442 by Alan3354(30993)   on 2012-09-24 15:54:30 (Show Source): You can put this solution on YOUR website! A worker's take home pay is $492, after deductions totaling 40% of the gross pay have been subtracted. What is the gross pay? ================ $492 = 60% of the gross pay 492 = 0.6*GP GP = 492/0.6 GP = $820

Surface-area/656304: PLEASE HELP! The question is to find the value of x HERE IS A PICTURE OF PROBLEM & ANSWERS TO CHOOSE FROM>>> http://i48.tinypic.com/bezpl5.png (a and d are incorrect) explain how to solve this please THANK YOU SO MUCH! 1 solutions Answer 409441 by Alan3354(30993)   on 2012-09-24 15:52:37 (Show Source): You can put this solution on YOUR website! PLEASE HELP! The question is to find the value of x HERE IS A PICTURE OF PROBLEM & ANSWERS TO CHOOSE FROM>>> http://i48.tinypic.com/bezpl5.png ================== The triangles are similar, so 3/4 = (x+3)/10

Linear_Equations_And_Systems_Word_Problems/656306: Please help me solve this question: during the 2009 major league baseball season, the los angeles dogers played 162 games. They won 28 more games than they lost. What was their win-loss record that year? 1 solutions Answer 409439 by Alan3354(30993)   on 2012-09-24 15:49:05 (Show Source): You can put this solution on YOUR website! during the 2009 major league baseball season, the los angeles dogers played 162 games. They won 28 more games than they lost. What was their win-loss record that year? ----------------- W + L = 162 W = L + 28 ------------- Can you do the rest?

Travel_Word_Problems/656190: a cargo truck traveled 261 miles in 4 hours. About what speed was the truck averaging on this trip? 1 solutions Answer 409388 by Alan3354(30993)   on 2012-09-24 12:39:58 (Show Source): You can put this solution on YOUR website! a cargo truck traveled 261 miles in 4 hours. About what speed was the truck averaging on this trip? ------------------- d = r*t 261 = r*4

Polynomials-and-rational-expressions/656189: Find the product:((-1/3)x^2-1/3)((1/2)x+1/4) I'm not sure how to start this problem. I know in dividing you would separate the numbers from the letters and exponents. So on this problem I have tried to do -1/3*1/2*-1/3*1/4=(1/72) then multiply the x^2 and the x which you cant. so i'm so lost on this one. please help! 1 solutions Answer 409381 by Alan3354(30993)   on 2012-09-24 12:07:43 (Show Source): You can put this solution on YOUR website! Find the product:((-1/3)x^2-1/3)((1/2)x+1/4) ------------ = or

Coordinate-system/656125: Figure out the point of intersection for the graph of the pair of equations 4b + 10 C = 8 1 solutions Answer 409380 by Alan3354(30993)   on 2012-09-24 12:02:18 (Show Source): You can put this solution on YOUR website! Figure out the point of intersection for the graph of the pair of equations 4b + 10 C = 8 ------------------- That's only 1 equation.

Travel_Word_Problems/656161: A car travels 151 miles in 3 hours. Find the average speed of the car in feet per second. Round to the nearest whole number. 1 solutions Answer 409378 by Alan3354(30993)   on 2012-09-24 11:59:16 (Show Source): You can put this solution on YOUR website! A car travels 151 miles in 3 hours. Find the average speed of the car in feet per second. Round to the nearest whole number. --------- r = d/t = (151/3) mi/hr 1 mile = 5280 ft 1 hr = 3600 seconds ---------- Include the units in the calculations to avoid mistakes.

Volume/656159: suppose an inflatable bach ball has a diameter of 12 feet. find its exact volume. 1 solutions Answer 409375 by Alan3354(30993)   on 2012-09-24 11:38:59 (Show Source): You can put this solution on YOUR website! suppose an inflatable bach ball has a diameter of 12 feet. find its exact volume. --------- r = 6 ft

real-numbers/656175: Please help can't seem to understand this.... Find the product. Justify your steps -3(-5)(-4x) thanks 1 solutions Answer 409374 by Alan3354(30993)   on 2012-09-24 11:37:46 (Show Source): You can put this solution on YOUR website! Find the product. Justify your steps -3(-5)(-4x) ------------- 3*5*4x = 60x An odd number of negatives --> negative --> -60x