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Recent problems solved by 'Alan3354'

Alan3354 answered: 31513 problems
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test/566244: If there are 356 beans in a 16 ounce bag, how many beans would there be in a 20 ounce bag? 1 solutions Answer 366167 by Alan3354(31534)   on 2012-02-01 16:38:33 (Show Source): You can put this solution on YOUR website! If there are 356 beans in a 16 ounce bag, how many beans would there be in a 20 ounce bag? --------------- 356/16 = 22.25 beans/ounce 22.25*20 = 445 beans =============== 356:16::n:20 16n = 356*20 n = 445 beans ============ 20 = 16*1.25 356*1.25 = 445 beans =========== I'm going with 445 beans

Travel_Word_Problems/566220: Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph. The return trip took 1/4hr longer because of traffic. How far did she travel to the appointment? 1 solutions Answer 366165 by Alan3354(31534)   on 2012-02-01 16:23:24 (Show Source): You can put this solution on YOUR website! Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph. The return trip took 1/4hr longer because of traffic. How far did she travel to the appointment? ------------------ d = r*t d = 50t = 40*(t + 0.25) 50t = 40t + 10 t = 1 hour -------------- d = 50*1 = 50 miles ================== Notice that the avg speed for the round trip is not the average of 50 and 40. Why is that? The avg speed is less, = 44.444... mi/hr, not 45

Equations/566247: what is : Alicen has chosen a 250 page book for her book report. If she reads t pages a day, how long will it take her to read the book 1 solutions Answer 366164 by Alan3354(31534)   on 2012-02-01 16:18:21 (Show Source): You can put this solution on YOUR website! what is : Alicen has chosen a 250 page book for her book report. If she reads t pages a day, how long will it take her to read the book ----------------- 250/t days

logarithm/566246: expand the logarithm log base 2 12^5/11^2 1 solutions Answer 366163 by Alan3354(31534)   on 2012-02-01 16:17:29 (Show Source): You can put this solution on YOUR website! expand the logarithm log base 2 12^5/11^2 -------- = 5log(12) - 2log(11) any base

Miscellaneous_Word_Problems/566223: A truck with 48-in.-diameter wheels is traveling at 45 mi/h. (a) Find the angular speed of the wheels in rad/min. rad/min (b) How many revolutions per minute do the wheels make? rev/min 1 solutions Answer 366147 by Alan3354(31534)   on 2012-02-01 15:54:02 (Show Source): You can put this solution on YOUR website! A truck with 48-in.-diameter wheels is traveling at 45 mi/h. --------- 45 mi/hr = 66 ft/sec = 3960 ft/minute ---------- Each revolution = pi*d feet = 4pi feet (b) How many revolutions per minute do the wheels make? rev/min ------------- Each revolution = pi*d feet = 4pi feet rpm = 3960 ft/min / 4pi feet = 990/pi rpm =~ 315 rpm --------------- (a) Find the angular speed of the wheels in rad/min. rad/min ------------- rad/min = rpm*2*pi = 990/pi * (2pi) = 1980 rad/min

Volume/566216: a box holds 10 cubes of 2 inches cubed. How big is the box? each cube volume 8 cu.inches total volume is 80 cu.in. hence the volume of thebox should be at least 80 cu.in cube rooting 80 we will get 4 < (cube root of ) 80 < 5 we cannot have 4. something for a side in the cube . so we take 5 as the box side so the box size is minimum of 5 inches cheers 1 solutions Answer 366146 by Alan3354(31534)   on 2012-02-01 15:48:50 (Show Source): You can put this solution on YOUR website! a box holds 10 cubes of 2 inches cubed. How big is the box? ---------- Its volume is at least 20 cubic inches.

Linear-systems/566178: How would you graph x + 3 = 0 I thought it would be horizontal line across -3 1 solutions Answer 366143 by Alan3354(31534)   on 2012-02-01 15:17:39 (Show Source): You can put this solution on YOUR website! How would you graph x + 3 = 0 ------ x = -3 For any y, x = -3 It's parallel to the y-axis, or "vertical", thru (-3,0) ------------ Plot 2 points, (-3,0) and (-3,3) Draw a line thru them.

Polygons/566197: How many sides does a polygon have with interior angles that equal 72? Thanks 1 solutions Answer 366142 by Alan3354(31534)   on 2012-02-01 15:14:58 (Show Source): You can put this solution on YOUR website! How many sides does a polygon have with interior angles that equal 72? Thanks ------------ 3 sides --> 60 degs 4 sides --> 90 degs --------- no such (regular) polygon

Circles/566196: A circle has a radius of 4 centimeters what is the circumference and area of the circle 1 solutions Answer 366141 by Alan3354(31534)   on 2012-02-01 15:12:12 (Show Source): You can put this solution on YOUR website! A circle has a radius of 4 centimeters what is the circumference and area of the circle ------

Linear-systems/566195: How do i solve this? solve the linear system using substitution x=5y-42 x+5y=48 1 solutions Answer 366140 by Alan3354(31534)   on 2012-02-01 15:11:27 (Show Source): You can put this solution on YOUR website! How do i solve this? solve the linear system using substitution x=5y-42 x+5y=48 ------------ The 1st eqn is solved for x. Sub for x in the 2nd eqn.

Mixture_Word_Problems/566184: how many pounds each of a $3.50 blend of nuts is mixed to get 10 ponds of a $4.00 blend of nuts 1 solutions Answer 366139 by Alan3354(31534)   on 2012-02-01 15:06:16 (Show Source): You can put this solution on YOUR website! how many pounds each of a $3.50 blend of nuts is mixed to get 10 ponds of a $4.00 blend of nuts -------------- It depends on what you mix it with.

Angles/566190: help me do my homework? 1 solutions Answer 366137 by Alan3354(31534)   on 2012-02-01 15:04:57 (Show Source): You can put this solution on YOUR website! help me do my homework? ---------- Posting the problems improves your chances of getting help.

Linear-systems/566188: Which number is one-fourth between 2.2 and 8.5? I chose 3.775, I am correct? 1 solutions Answer 366136 by Alan3354(31534)   on 2012-02-01 15:04:07 (Show Source): You can put this solution on YOUR website! duplicate

Linear-systems/566189: Which number is one-fourth between 2.2 and 8.5? I chose 3.775, I am correct? 1 solutions Answer 366135 by Alan3354(31534)   on 2012-02-01 15:03:42 (Show Source): You can put this solution on YOUR website! Which number is one-fourth between 2.2 and 8.5? I chose 3.775, I am correct? ============ Diff = 8.5 - 2.2 = 6.3 6.3/4 = 1.575 2.2 + 1.575 = 3.775 ------------ 8.5 - 1.575 is also "1/4 between" Not a well-worded question.

Linear-systems/566164: Please help me use the elemination method to solve these systems. 1. x-y=-2 x-3y= -12 a. ( -5,-3) b. ( 5,3) c. (-3,-5) d. ( 3,5) 1 solutions Answer 366133 by Alan3354(31534)   on 2012-02-01 14:40:34 (Show Source): You can put this solution on YOUR website! x-y = -2 x-3y= -12 ---------- Subtract

Triangles/566145: is it possible to draw a right triangle with sides measuring 8 inches, 12 inches, and 18 inches? if so what are the calculations? 1 solutions Answer 366132 by Alan3354(31534)   on 2012-02-01 14:38:39 (Show Source): You can put this solution on YOUR website! is it possible to draw a right triangle with sides measuring 8 inches, 12 inches, and 18 inches? if so what are the calculations? ------------- If the square of the longest side = the sum of the squares of the other 2, it's a right triangle. 18^2 = 324 ------- 8^2 + 12^2 = 208 Not a right triangle

Triangles/566159: Find the area of a triangle with sides measuring 4m, 5m, and 8m? 1 solutions Answer 366131 by Alan3354(31534)   on 2012-02-01 14:34:17 (Show Source): You can put this solution on YOUR website! Find the area of a triangle with sides measuring 4m, 5m, and 8m? ------------- Use Heron's Law s = 1/2 the perimeter = (4 + 5 + 8)/2 s = 8.5 ------ = Area =~ 8.18 sq meters

Angles/566161: Angle's A and B are supplementary. If angle A is 56 degrees then what is B? 1 solutions Answer 366129 by Alan3354(31534)   on 2012-02-01 14:28:17 (Show Source): You can put this solution on YOUR website! Angle's [sic] A and B are supplementary. If angle A is 56 degrees then what is B? ------------- A + B = 180

Exponential-and-logarithmic-functions/566148: I am having difficulty comprehending how this is done. Please Help! Use the formula v= 4/3 pi r^3 1. If the radius of a ball is twice that of another, how many times as big is its volume? 2. If the volume is twice that if a blue ball, how many times as big is its radius? Thank you Is 1 solutions Answer 366128 by Alan3354(31534)   on 2012-02-01 14:26:12 (Show Source): You can put this solution on YOUR website! Use the formula v= 4/3 pi r^3 1. If the radius of a ball is twice that of another, how many times as big is its volume? 8 times. The volume is related to r^3. (n*r)^3 = n^3*r^3 Volume is a function of the cube of the radius. -------------------- 2. If the volume is twice that if a blue ball, how many times as big is its radius? Volume is a function of the cube of the radius. I don't know about the color, but the radius is times.

absolute-value/566149: how do i graph y=|x+3|-2 1 solutions Answer 366127 by Alan3354(31534)   on 2012-02-01 13:50:29 (Show Source): You can put this solution on YOUR website! how do i graph y=|x+3|-2 ------- You pick values for x and find y. Plot the points. Draw lines thru them. ---------------- x = -3 is the vertex

Distributive-associative-commutative-properties/566111: if x+y=13 x.y=36 what is x and y 1 solutions Answer 366115 by Alan3354(31534)   on 2012-02-01 11:47:18 (Show Source): You can put this solution on YOUR website! if x+y=13 x.y=36 what is x and y ------------ If you mean x times y = 36, it's 4 & 9. Use the asterisk for multiply. x*y = 36

Polygons/566113: if you only had part of a shape and you wanted to find out how many sides the angle had in total. how would you solve it??? 1 solutions Answer 366114 by Alan3354(31534)   on 2012-02-01 11:45:17 (Show Source): You can put this solution on YOUR website! if you only had part of a shape and you wanted to find out how many sides the angle had in total. how would you solve it??? ------------- That's not clear.

Trigonometry-basics/566114: in a circle witha 10-ft diameter, and arc 20ft long subtends an angle of how many radians?how many degrees, to the nearest degree? 1 solutions Answer 366113 by Alan3354(31534)   on 2012-02-01 11:43:13 (Show Source): You can put this solution on YOUR website! in a circle witha 10-ft diameter, and arc 20ft long subtends an angle of how many radians?how many degrees, to the nearest degree? --------- Angle in radians = arc/radius = 2 --- 2 rads = 2*(180/pi) degs =~ 115 degs

Travel_Word_Problems/566088: An airplane flying at a constant speed can fly 800 mile with the wind in the same amount of time it can fly 600 mile against the wind. What is the speed of the plane in still air if the wind blows at 50 mph? 1 solutions Answer 366112 by Alan3354(31534)   on 2012-02-01 11:27:05 (Show Source): You can put this solution on YOUR website! An airplane flying at a constant speed can fly 800 mile with the wind in the same amount of time it can fly 600 mile against the wind. What is the speed of the plane in still air if the wind blows at 50 mph? ------------ a = plane's airspeed t = d/r t = 800/(a+50) = 600/(a-50) ---- 800a - 40000 = 600a + 30000 200a = 70000 a = 350 mi/hr

Mixture_Word_Problems/566108: If 5 litres 20% of Sulfuric acid is added to 5 litres of 100% sulfuric acid, then what is the strength of that mixture? 1 solutions Answer 366111 by Alan3354(31534)   on 2012-02-01 11:22:04 (Show Source): You can put this solution on YOUR website! If 5 litres 20% of Sulfuric acid is added to 5 litres of 100% sulfuric acid, then what is the strength of that mixture? --------------- When the amounts are equal, it's the average = 60%

Rectangles/566102: What would the area be of 22 miles in width and 13 miles in length? 1 solutions Answer 366109 by Alan3354(31534)   on 2012-02-01 11:06:54 (Show Source): You can put this solution on YOUR website! What would the area be of 22 miles in width and 13 miles in length? ------------- If it's a rectangle, Area = W*L ---------- = 286 sq miles

Angles/566047: I need to know how can I find the supplementary angle of a given angle Like 148.7 1 solutions Answer 366108 by Alan3354(31534)   on 2012-02-01 10:51:41 (Show Source): You can put this solution on YOUR website! I need to know how can I find the supplementary angle of a given angle Like 148.7 ----------- Same as any. Subtract it from 180 degs.

Roman-numerals/566092: How do you solve the problem MCMLXI? 1 solutions Answer 366107 by Alan3354(31534)   on 2012-02-01 10:49:17 (Show Source): You can put this solution on YOUR website! How do you solve the problem MCMLXI? ----------- Step 1, state the problem. MCMLXI is not a problem.

Geometry_Word_Problems/566090: A polygon has five interior angles. It has two angles measuring 160° each, two angles measuring 75° each, and one angle measuring 70°. What kind of polygon is this? 1 solutions Answer 366106 by Alan3354(31534)   on 2012-02-01 10:46:40 (Show Source): You can put this solution on YOUR website! A polygon has five interior angles. It has two angles measuring 160° each, two angles measuring 75° each, and one angle measuring 70°. What kind of polygon is this? ---------- It has 5 angles --> pentagon

Length-and-distance/566063: Please help me i dont understand the cocine and sin and tan. the right trangle. the acute angle equals 26 and the side acroos the 90 degree angle is b and the side across the 26 degree angle equals a and the last side aquals 80 1 solutions Answer 366105 by Alan3354(31534)   on 2012-02-01 10:37:06 (Show Source): You can put this solution on YOUR website! the acute angle equals 26 and the side acroos the 90 degree angle is b and the side across the 26 degree angle equals a and the last side aquals 80 --------------- It's not clear what you mean.

test/566068: How do I solve the following equation please include the steps to arrive at answer. Xsq +x-5 1 solutions Answer 366104 by Alan3354(31534)   on 2012-02-01 10:35:18 (Show Source): You can put this solution on YOUR website! How do I solve the following equation please include the steps to arrive at answer. Xsq +x-5 ------------ There's no equal sign, so it's not an equation. Nothing to solve.