Number of results: 75,610
I need help finding x for this equation e^x (x^2 + 4x + 2)=0 thanks. e^x = 0 or x^2 + 4x + 2 = 0 the first has no real solution (actually x would have to an infinitely large negative number) The second is a quadratic, use the formula to solve it.
Wednesday, May 9, 2007 at 10:31pm by eric c.
You are asked to write a program for the course calculator to help a fellow student practise changing the subject of a formula. The formula will be of the type Y = AX + B, with different integer values of A and B, and the student is to rearrange the formula so that X becomes ...
Sunday, May 13, 2007 at 12:35pm by kat
which solution is the correct for this equation 4x^3 - 3x = 15 -1.8, -1.7, -1.6, -1.5, 1.5, 1.6, 1.7, 1.8 ?? What is your thinking, and why? Have you considered graphing y= 4x^3 -3x -15 ? Kat, what level of study are you at. This is an equation which can be "solved" only by ...
Sunday, May 13, 2007 at 2:55pm by kat
when i do the quadratic equation i get -17 plus or minus the square root of 193 all over 2. where do i get the two "cos 3x" roots?? solve the equation to the nearest tenth, where 0 degrees < or equal to x which is < 360 degrees. 8cos^2 3x-17cos3x+3=0 this doesnt factor, ...
Monday, May 14, 2007 at 9:53pm by justy
The "x intercept" is where y = 0, which is where the curve crosses the x axis. Solve y = x^2+ 2x- 8 = 0 You can write that as y = (x+4) (x-2) = 0 There are two places where y = 0. The factored equation tells you where they are. how would I find the x-intercepts of y=x^2+2x-8 ...
Friday, June 22, 2007 at 9:54pm by drwls
The height h in feet of an object after t seconds is given by the function h=-16t^2+60t+9.... How long will it take the object to hit the ground? Round your answer to the nearest thousandth.... when it hits the ground, h is zero. So you have a quadratic equation. Use the ...
Sunday, June 24, 2007 at 10:33am by TB
During rush hour, Fernando can drive 20 miles using the side roads in the same time that it takes to travel 15 miles on the freeway. If Fernando's rate on the side roads is 9 mi/h faster than his rate on the freeway, find his rate on the side roads. What is the formula and ...
Saturday, July 14, 2007 at 9:50pm by Diana
Writing this equation
how do I write the equation of a line perpendicular to the line 6x – 3y=10 and containing the point (-6, 2). The line you are given can have its equation rewritten im y = mx + b as: y = 2x - 10/3 That tells you that is slope is m = 2. A line that is perpendicular to that must ...
Tuesday, July 24, 2007 at 12:39pm by Katty
solve for x (24+2x)(10+2x) - 240 = 152 First multiply. 24(10) = ___ 2x (2x) = ____ Now subtract 240. Can you finish the problem from here? dont i need to put this in equatic equation to solve for x. cause i need to find the width of a small rectangle inside a bigger triangle. ...
Friday, August 3, 2007 at 5:23pm by q
1)What is the distance between the museum and sailing club.I cant post the graph or anything but I have my numbers right its 53 but I used the distance formula so its either 53 units or the square root of 53 units. 2)Write the equation of the parabola y= 4x^2-8x+1 in standard ...
Monday, August 20, 2007 at 11:24am by Marissa
Math 12 - Review - Quadratic
The first: x2</sup?=11/2 x= sqrt (11/2) which is an ok answer. Some purists dont like sqare roots of fractions, so ... x= sqrt [(11/2)(2/2)] x= sqrt (22/4)= 1/2 sqrt 22 On the last, change it to a quadratic.. 3m2 -4m + 2=0 then the quadratic equation x= (4 +- sqrt (16-24))/...
Wednesday, September 5, 2007 at 11:39pm by bobpursley
Derive the formula for horizontal "range" distance R travelled between the two heights, as a function of V. Then find the values of V that correspond to 12.22 and 11.78 m range for R. R = V cos 38.5 * T , where T is the time of flight between the two heights. Assume the ball ...
Tuesday, September 25, 2007 at 11:59am by drwls
There are times where they do not factor nicely. A quick check is to calculate the sqrt(b^2 - (4*a*c)) part of the quadratic equation. Here it looks like that would be sqrt(28) or 2*sqrt(7). This pretty much says it is not easily factored by inspection. Use the complete ...
Wednesday, October 3, 2007 at 11:12pm by Quidditch
Can you please help me with the these problems. 8.Write an equation in standard form of the parabola that has the same shape as the graph of f(x) = 11x^2, but which has its vertex at (2, 9). 10. Use the vertex and intercepts to sketch the graph of the quadratic function. y + 3...
Saturday, October 13, 2007 at 11:52pm by Ashley
Use Pythagoras x^2 + (x+1)^2 = 16 Expand to get a quadratic equation. Solve using the formula and use only the positive answer (I got a width of 2.28 and a length of 3.28)
Wednesday, October 17, 2007 at 11:16am by Reiny
If an object is fired upward from the top of a tower at a velocity of 80 feet per second, the tower is 200 ft high, the formula is h(t)=-16t^2+80t+200, t is time h is height, how long after it is fired does the object reach the max height? It is like a quadratic equation
Tuesday, October 23, 2007 at 9:31am by shila
If an object is fired upward from the top of a tower at a velocity of 80 feet per second, the tower is 200 ft high, the formula is h(t)=-16t^2+80t+200, t is time h is height, how long after it is fired does the object reach the max height? It is like a quadratic equation The ...
Tuesday, October 23, 2007 at 9:31am by tchrwill
Writing equation of a polynomial function
Can you help me with the following questions, I dont understand. thanks! Write the equation of a polynomial function with the given characteristics. Use a leading coefficient of 1 or -1 and make the degree of the function as small as possible. #1. Crosses the x-axis at -4, 0, ...
Tuesday, October 23, 2007 at 4:26pm by Lisa
look at the value of the discriminat b^2 - 4ac from the quadratic equation formula if the Discriminant is positive, there are two real and distinct roots If the Discriminant is zero, there is one real root if the Discriminant is negative there are two complex roots (imaginary ...
Thursday, November 8, 2007 at 3:51pm by Reiny
Football Lesson 5.1 1. y= -0.035x^2 + 1.4x + 1, where x is the distance (in yards) and y is the height (in yards) a. Does the graph open up or down? b. Does the graph have a Maximum value or a minimum value? c. graph the quadratic function. (i'll graph it just write it in the ...
Sunday, November 11, 2007 at 1:44pm by Monte'