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The latest questions and answers, from members following Math at eNotes.Thu, 18 Sep 2014 23:17:15 PSTen-usA parabola is a graph of a quadratic function. The equation of a...
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A parabola is a graph of a quadratic function. The equation of a quadratic function in standard form is `y = ax^2 + bx + c` The vertex of the parabola can be determined from this equation, so first we have to find a, b, and c, in order to write the equation of the given parabola. The y-intercept of a parabola, or any graph, is the point where the graph intersects y-axis. At this point x = 0. So, for a quadratic function, y-intercept is always...http://www.enotes.com/homework-help/parabola-has-y-intercept-3-passes-through-points-471136Thu, 18 Sep 2014 23:17:15 PSTA parabola has a y-intercept of 3 and passes through the points (-2,15)...
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A parabola has a y-intercept of 3 and passes through the points (-2,15) and (4,3). What are the coordinates of the vertex?http://www.enotes.com/homework-help/parabola-has-y-intercept-3-passes-through-points-471136#1September 18, 2014, 10:43 pm PSTPigs, dinosaurs, elephants, and unicorns arrive to the Animal Hospital...
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Pigs, dinosaurs, elephants, and unicorns arrive to the Animal Hospital to have their health check-up according to Poisson processes with rates l1; l2; l3; and l4, respectively. The time for each health check-up, remarkably, is exponentially distributed with parameter mi (that is, rate mi) for an animal of type i. Each type i of animals has their own waiting room of size Ni <∞ , and there is also a common waiting room of size M < ∞....http://www.enotes.com/homework-help/pigs-dinosaurs-elephants-unicorns-arrive-animal-471129September 18, 2014, 6:11 pm PSTHi I need simpler equations for a Grade 6 please.
http://www.enotes.com/homework-help/need-find-area-b-c-d-e-f-g-471078
Hi I need simpler equations for a Grade 6 please.http://www.enotes.com/homework-help/need-find-area-b-c-d-e-f-g-471078Wed, 17 Sep 2014 11:39:00 PSTI learned a cool trick in school for problems like this. When you are...
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I learned a cool trick in school for problems like this. When you are given one point on a line and then the midpoint of the line, you can set up the problem like this: Point A: (2,8) Midpoint: (4,9) Point B: (x,y) If you count the difference between the x-value of Point A (2) and the x-value of the midpoint (4), you get a difference of 2. If you add 2 to the x-value of the midpoint, you get 6. This is the x-value of Point B. ...http://www.enotes.com/homework-help/midpoint-m-ab-has-coordinates-4-9-coordinates-2-8-471062Tue, 16 Sep 2014 22:41:04 PSTEach of the figures of which the area has to be determined can be...
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Each of the figures of which the area has to be determined can be divided into rectangles and triangles. The area of a rectangle with sides of length a and b is A = a*b. And the area of a triangle with base b and height h is `A = (1/2)*b*h` . To determine the area of figure a, consider a rectangle from which two triangles have been cut out. The length of the sides of the rectangle are 5 units and 5 units. From this, two triangles have been...http://www.enotes.com/homework-help/need-find-area-b-c-d-e-f-g-471078#2Tue, 16 Sep 2014 13:37:33 PSTI need to find the area for a,b,c,d,e,f,g.
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I need to find the area for a,b,c,d,e,f,g.http://www.enotes.com/homework-help/need-find-area-b-c-d-e-f-g-471078#3September 16, 2014, 1:00 pm PST(I) To solve for the midpoint of two points `(x_1, y_1)` and `(x_2,...
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(I) To solve for the midpoint of two points `(x_1, y_1)` and `(x_2, y_2)` , use the formula: `x_(mid)=(x_2+x_1)/2` `y_(mid)=(y_2+y_1)/2` And to solve for the distance between two point, apply the formula: `d=sqrt((x_2-x_1)^2+(y_2-y_1)^2)` (1) A(2,-5), B(6, -7) `x_(mid)=(6+2)/2=8/2=4` `y_(mid)=(-7+(-5))/2=(-12)/2=-6` `d=sqrt((6-2)^2+(-7-(-5))^2)=sqrt(4^2+(-2)^2)=sqrt(20) = 2sqrt5` Hence, the midpoint of these two points is (4,-6) and their...http://www.enotes.com/homework-help/find-midpoint-b-distance-each-line-segment-ab-with-471061Tue, 16 Sep 2014 02:04:23 PSTThe midpoint between two points (a,b) and (c,d) is given by...
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The midpoint between two points (a,b) and (c,d) is given by `((a+c)/2, (b+d)/2)` We have that one point is (2,8). So we can let a=2 and b=8. We also know the midpoint is (4,9). From this information we get the following (4,9) =`((2+c)/2,(8+d)/2)` Since two points are equal only if both coordinates are equal we have: To solve the second equation, multiply both sides by 2. This gives you 8 = 2+c. Subtract 2 from both sides to find 6...http://www.enotes.com/homework-help/midpoint-m-ab-has-coordinates-4-9-coordinates-2-8-471062#4Tue, 16 Sep 2014 01:07:35 PSTSince M is the midpoint of a linear segment, then by definition the...
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Since M is the midpoint of a linear segment, then by definition the segment from A to M will have the same slope as the segment from M to B. If we find the slope of AM, and apply it to M, it will lead us to B. Comparing M and A, we find that there is a +2 change in X, and a +1 change in Y. All we need to do is apply these changes to the coordinates of M; 4(+2), 9(+1) B = 6,10http://www.enotes.com/homework-help/midpoint-m-ab-has-coordinates-4-9-coordinates-2-8-471062#5Tue, 16 Sep 2014 00:18:38 PSTThe midpoint M of AB has coordinates (4,9). If the coordinates of A...
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The midpoint M of AB has coordinates (4,9). If the coordinates of A are (2,8), what are the coordinates of B?http://www.enotes.com/homework-help/midpoint-m-ab-has-coordinates-4-9-coordinates-2-8-471062#6September 15, 2014, 11:59 pm PST(I) Find the a. midpoint and b. distance of each line segment, AB with...
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(I) Find the a. midpoint and b. distance of each line segment, AB with the given endpoint 1. A(2,-5), B(6,-7) 2. A(5,5), B(-9,3) 3. A(-2,3), B(-10,10) (II) The midpoint of line segment AB is M. The coordinates of M are (3,-2) and the coordinates of A are (-1.0). What are the coordinates of B?http://www.enotes.com/homework-help/find-midpoint-b-distance-each-line-segment-ab-with-471061#7September 15, 2014, 11:57 pm PSTJK = x^2 - 4x KL = 3x - 2 JL = 28 With the information given, you can...
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JK = x^2 - 4x KL = 3x - 2 JL = 28 With the information given, you can conclude that JK and KL are both collinear segments, meaning they pass through the same straight line (JL). Therefore, you can conclude that JL is equal to the combined equations of JK and KL. JL = x^2 - 4x + 3x - 2 JL = x^2 - x - 2 = 28 You can make this equation be a quadratic by subtracting 28 from both sides. x^2 - x - 30 = 0 Now you are able to solve for x using the...http://www.enotes.com/homework-help/jk-equal-x-squared-4x-kl-equal-3x-2-jl-28-how-do-471043Mon, 15 Sep 2014 22:48:42 PST59 x 2 = 118. There re several ways you can solve this problem, the...
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59 x 2 = 118. There re several ways you can solve this problem, the easiest being a calculator, but if you want an explanation about what multiplying by two is, it is basically adding 59 to 59. When you multiply by the number two you are essentially solving 59 + 59, which also gives you 118.http://www.enotes.com/homework-help/what-59x2-471049Mon, 15 Sep 2014 22:39:16 PSTDecimals can be thought of as the calculated form of a ratio, i.e. a...
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Decimals can be thought of as the calculated form of a ratio, i.e. a fraction. For example: .5 is just another way of saying 1:2, or 1/2 Put in mathematical terms: `0.5 = 1/2 ` If we multiply both sides by the fraction's denominator, we get the numerator. 2 x (0.5) = 1 So: Denominator x Decimal form = Numerator We need to find the Denominator and Numerator; our only clue is that these will be integers. What we need to do is multiply the...http://www.enotes.com/homework-help/how-write-number-3-571428-ratio-two-integers-471058Mon, 15 Sep 2014 21:56:33 PST