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test/363098: (3X2)To the 2nd power -24x-60 1 solutions Answer 258850 by Fombitz(13828)   on 2010-10-28 11:10:57 (Show Source): You can put this solution on YOUR website! . . . OK, what about this expression do you want to know??

Equations/363077: Solve 3x-5(x-6)=2(10-x) Here is my work, but I am not coming out with a correct answer. 3x - 5x + 30 = 20 - 2x 2x + 3x - 5x + 30 = 20 0x = -10 1 solutions Answer 258849 by Fombitz(13828)   on 2010-10-28 11:09:52 (Show Source): You can put this solution on YOUR website! No, that's the correct answer. Since the solution leads to an inconsistency, there is no solution. No value for can make that above statement true.

Polynomials-and-rational-expressions/363076: x^2 – 8x + 15 factor completely idk how to do it any help???????? 1 solutions Answer 258848 by Fombitz(13828)   on 2010-10-28 11:07:24 (Show Source): You can put this solution on YOUR website! Look for two numbers that add up to (-8) and whose product is (15). If you look at the factors of 15 (15,1) (3,5). If you add (-3) and (-5) you get (-8). . . .

Angles/363078: If the measure of angle 4= 70 and the measure of angle 7= 2x. Then what is the value of x? 1 solutions Answer 258847 by Fombitz(13828)   on 2010-10-28 11:06:01 (Show Source): You can put this solution on YOUR website! What is the relationship between angle 4 and angle 7 or do you have a diagram??

Graphs/363082: Y=1/2 x Graph the equation and identify the y intercept 1 solutions Answer 258845 by Fombitz(13828)   on 2010-10-28 11:05:21 (Show Source): You can put this solution on YOUR website! The equation is in slope-intercept form, . . .

Numeric_Fractions/363094: What does opposite mean in math terms? 1 solutions Answer 258844 by Fombitz(13828)   on 2010-10-28 11:02:44 (Show Source): You can put this solution on YOUR website! In addition, it's the additive inverse. The number you add to another number to get zero. Example: 3+ (-3)=0 So -3 is the additive inverse of 3. . . . In multipication, it's the multiplicative inverse. The number you multiply another number by to get 1. Example: 5*(1/5)=1 So (1/5) is the multiplicative inverse of 5. . . . In that sense, those two examples highlight "opposites".

Probability-and-statistics/363074: Hello, Can someone please check my work. Essay; show all work. A simple dartboard has three areas… the main board has a radius of 10 inches, there is a circle with a radius of 5 inches, and the bullseye has a radius of 2 inches. What is the probability of a random dart landing inside the bullseye. Here is my Answer: Find the Area of Bull’s-eye A = pi *r^2 Start with the area of a circle formula. A = pi*(2)^2 we plug in r=2 A = 3.14159*(2)^2 we replace pi with 3.14159 ( since pi is approximately 3.14159 A = 3.14159*(4) we square 2 to get 4 A=12.56636 we multiply 3.14159 and 4 to get 12.56636 So the area of the bull’s-eye with a radius of 2 units is roughly 12.56636 square units, the nearest thousandth. Area of a whole board A = pi * r^2 Start with the area of a circle formula. A = pi * (15)^2 we plug in r=15 A = 3.14159*(15)^2 We replace pi with 3.14159 (since pi is approximately 3.14159) A = 3.14159*(225) Square 15 to get 225. A=706.85775 Multiply 3.14159 and 225 to get 706.85775 So the area of the circle with a radius of 15units is roughly 706.85775 square units. CHANCE FOR A BULL'S EYE. 12.56636/706.85775 =0.017778 square units 1 solutions Answer 258824 by Fombitz(13828)   on 2010-10-28 10:10:52 (Show Source): You can put this solution on YOUR website! No, your methodology is correct, however the radius of the entire board is not .

Percentage-and-ratio-word-problems/363070: the price of an article has been reduced 25% in order to restore the original price, the price must be increased by 1 solutions Answer 258821 by Fombitz(13828)   on 2010-10-28 10:05:40 (Show Source): You can put this solution on YOUR website! Let the original price be P. The sale price is (3/4)P. To get back to P, multiply by X. Increase the sale price by 1/3 to get back to the original price. . . Example, The original price of the sweater was $10. Sale price was $7.50 or $2.50 off. To get back to $10.00, we need to add $2.50.

Mixture_Word_Problems/363069: A lab has a 20% acid solution and a 50% acid solution. How many liters of each are required to obtain 600 liters of a30% solution? 1 solutions Answer 258819 by Fombitz(13828)   on 2010-10-28 10:02:42 (Show Source): You can put this solution on YOUR website! Let A be the amount of 20% solution, B the amount of 50% solution. 1. . . 2. Multiply eq. 1 by (-2) and add to eq. 2, liters Then from eq. 1, liters

Quadratic-relations-and-conic-sections/362874: Simplify 2x + 5 over 4x^2 + 2x-5 over 10x 1 solutions Answer 258818 by Fombitz(13828)   on 2010-10-28 10:00:22 (Show Source): You can put this solution on YOUR website! Use the common denominator, ,

Mixture_Word_Problems/362875: Suppose you are a salesperson for quark computer company. Each month you earn $500 plus one sixth of your sales. What amount must you sell this month to earn $3000? 1 solutions Answer 258816 by Fombitz(13828)   on 2010-10-28 09:53:28 (Show Source): You can put this solution on YOUR website! You must sell $15,000 worth so get cracking.

Distributive-associative-commutative-properties/362882: 4 x 509 12 x 103 6 x 310 195 x 5 99 x 50 1 solutions Answer 258815 by Fombitz(13828)   on 2010-10-28 09:52:13 (Show Source): You can put this solution on YOUR website! What's the question?

Proportions/362891: I think this is a proportion problem. A survey indicated that 5 out of 9 doctors use Zed pain reliever. If 3600 doctors were surveyed, how many use Zed? I got x= 2000. Is this correct? 1 solutions Answer 258814 by Fombitz(13828)   on 2010-10-28 09:51:43 (Show Source): You can put this solution on YOUR website! Yes, correct. Well done!

Linear_Equations_And_Systems_Word_Problems/362889: Due to melting, an ice sculpture loses one-half its weight every hour. After 8 hours, it weighs 5/16 of a pound. How much did it weigh in the beginning. I did 5/16+8 and put the fraction into decimal form then added the two together and got 8.3125. Then its says 1/2 of the that is lost in weight. Now I multiplied the 8.3125 to .05(The decimal of 1/2) then got 4.15625. I dont know if that is correct or what and i used samdep instead of pemdas its pemdas backwards because it says to solve backwards using asmdep. 1 solutions Answer 258813 by Fombitz(13828)   on 2010-10-28 09:50:33 (Show Source): You can put this solution on YOUR website! Let's say it weighed to start. After hour, it weighs After hours, it weighs After hours, it weighs After hours, it weighs After hours, it weighs After hours, it weighs After hours, it weighs After hours, it weighs But you know that So then, lbs . . . You could also work it backwards, After hours it weighs lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb. After hours it weighed lb.

Polynomials-and-rational-expressions/362884: Please solve the following equations involving radical expressions. 1.a^3 - 54=0 2.2*3rd(x+4) = 10 1 solutions Answer 258812 by Fombitz(13828)   on 2010-10-28 09:43:21 (Show Source): You can put this solution on YOUR website! DUPLICATE See Polynomials-and-rational-expressions/362969

Functions/363067: Give the Domain and Range of H={(-2,-3),(5,9),(5,-2)} Write your answer using set notations 1 solutions Answer 258811 by Fombitz(13828)   on 2010-10-28 09:41:54 (Show Source): You can put this solution on YOUR website! Domain:{-2,5} Range:{-3,-2,9}

Linear-equations/362963: I need help with graphing an answer on to a graph can you help? Answer is t(2010)=7000 t=year and 7000 is population 1 solutions Answer 258810 by Fombitz(13828)   on 2010-10-28 09:36:24 (Show Source): You can put this solution on YOUR website! Make a graph with an x-axis labeled as years and y-axis labeled as population. Make the limits whatever you think are reasonable. The years (x-axis) must have 2010 on it and population must have 7000 on it. Move to 2010 on the x-axis. Move up from there to 7000 on the y-axis and mark the point. . . .

Linear-equations/363062: Find an equation of the line containing the point (2, -1) and parallel to the line 8x=7y-24. Please provide step-by-step for arriving to the answer. Thanks to my textbook I know the answer is y=8/7x-23/7. I want to know how they arrived at that answer, because when I do it I get y=8/7x+24/7. 1 solutions Answer 258808 by Fombitz(13828)   on 2010-10-28 09:33:02 (Show Source): You can put this solution on YOUR website! First find the slope by converting to slope-intercept form, <--- That's the slope-intercept form of the first line. Parallel lines have identical slopes. . . Now use point (2,-1) to solve for . . . . <--- That's the slope-intercept form of the second line. . . .

Linear_Algebra/362877: solve the matrix equation AX=B for the 2x2 matrix X: A 2 -7 -1 4 ] x= B -21 3 12 -2 1 solutions Answer 258806 by Fombitz(13828)   on 2010-10-28 09:28:57 (Show Source): You can put this solution on YOUR website! [A]= [B]= . . . [A][X]=[B] [X]=[A]inv[B] . . . det[A]= . . . [A]inv= . . . [X]=[A]inv[B]=

Expressions-with-variables/363057: Perform the operations and simplify: 3n^2+5n-2/12n^2-13n+3 / n^2+3n+2/4n^2+5n-6 1 solutions Answer 258801 by Fombitz(13828)   on 2010-10-28 09:18:48 (Show Source): You can put this solution on YOUR website! . . . . . .

Functions/363056: v(x)= sqrt-4x+24 find the domain of the function write the answer in interval notation 1 solutions Answer 258799 by Fombitz(13828)   on 2010-10-28 09:11:25 (Show Source): You can put this solution on YOUR website! . . . . . (,]

Proofs/362883: Use cases to prove that x^2+x-1=0 has no rational solutions. 1 solutions Answer 258797 by Fombitz(13828)   on 2010-10-28 09:08:18 (Show Source): You can put this solution on YOUR website! By the rational roots theorem, if the equation has rational roots, they are of the form, or For , so that is not a solution. For , so that is not a solution. So there are no rational roots. . . .

Pythagorean-theorem/362887: determine whether a triangle with sides of 3 miles, miles, and 8 miles is a right triangle. Explain . 1 solutions Answer 258793 by Fombitz(13828)   on 2010-10-28 09:01:19 (Show Source): You can put this solution on YOUR website! You need to use the Pythagorean theorem but you are missing one of your triangle lengths. Please re-post.

Geometry_Word_Problems/362915: A SHIP SAILS 300 KM DUE WEST AND THAN 100 KM DUE SOUTH. AT THE END OF THE JOURNEY, HOW FAR IS THE SHIP FROM ITS STARTING POSITION? 1 solutions Answer 258790 by Fombitz(13828)   on 2010-10-28 08:59:34 (Show Source): You can put this solution on YOUR website! The west and south displacements form a right triangle. The hypotenuse of the triangle is the distance from the starting position. Use the Pythagorean theorem, km

Triangles/362896: Find the area of the triangle. the height is dashed through the middle and says 7 and it is a 90 degree angle and the base is twelve. 1 solutions Answer 258787 by Fombitz(13828)   on 2010-10-28 08:52:10 (Show Source): You can put this solution on YOUR website! The area of a triangle is half of the product of base and height. Complete the calculation to get the area.

Polynomials-and-rational-expressions/362969: Could you solve the following equations involving radical expressions. Thank you. 1) a^3 - 54=0 2) 2*3rd(x+4) = 10 1 solutions Answer 258786 by Fombitz(13828)   on 2010-10-28 08:47:48 (Show Source): You can put this solution on YOUR website! or approximately . . . Please explain this "2*3rd". Is that the cube root of ? If so, then If that's not what you meant, please re-post.

Linear-equations/362987: 2y-3x=6 1 solutions Answer 258784 by Fombitz(13828)   on 2010-10-28 08:41:20 (Show Source): You can put this solution on YOUR website! . . . What's the question??

Systems-of-equations/362918: Please help me solve this problem by the elimination method. I am having a lot of trouble understanding how to solve for y after I solve for x. And I have a problem solving for x when a fraction is involved as is in this problem. 0.3x - 0.2y=4 0.4x - 0.5y=-55/17 I understand that the first equation will be 0.3x = 4, and the second will be 0.4x=-55/17; Don't know what to do after this. I do not get the elimination method. Thank you. 1 solutions Answer 258783 by Fombitz(13828)   on 2010-10-28 08:39:41 (Show Source): You can put this solution on YOUR website! 1. 2. If you don't like fractions or decimals, get rid of them by multiplying. Multiply both equations by 10 to get rid of decimals. 1. 2. Now multiply the second equation by 17 to get rid of the fraction. 2. . . . OK now you have 2 equations and you want to get rid of one variable. 1. 2. If you multiply the first equation by 85 and the second equation by (-2) and add them, you can eliminate and solve for . Now that you have , use either equation to solve for . Both equations will work. 1.

Trigonometry-basics/362958: Solve the following equation. |0 0 -1| |3 x 0 |= x^2 |2 0 3 | 1 solutions Answer 258780 by Fombitz(13828)   on 2010-10-28 08:27:23 (Show Source): You can put this solution on YOUR website! Two solutions: . . .

Graphs/363050: graph the quadratic equation: y=(x-4)^2-6 1 solutions Answer 258779 by Fombitz(13828)   on 2010-10-28 08:24:26 (Show Source): You can put this solution on YOUR website!

Linear_Algebra/363049: find the inverse of the function: f(x)=2x+1/2 1 solutions Answer 258778 by Fombitz(13828)   on 2010-10-28 08:23:25 (Show Source): You can put this solution on YOUR website! . .