Tuesday
December 10, 2013

# Posts by Quidditch

Total # Posts: 494

algebra word problem
r-5 being negative results in a negative t2 and so should be ignored.

algebra word problem
You are practically there! Combine terms and rearrange to get into the form: 4r^2 -90r + 275 = 0 Use the quadratic formula to find r. There will be two answers. One of the answers is the result if the canoeist reverses direction (r-5 is negative).

math
Put the equations into slope-intercept form: y = mx + b m = slope b = y intercept For your first problem... subtract x from both sides x + 8y = 16 8y = -x + 16 divide both sides by 8 y = -(1/8)x + 2 So, the slope is -(1/8) I am not sure why you set y to 0 in your solution. Tha...

Math
Put the equation into the form ax^2 + bx + c = 0 then use the quadratic formula to find the solutions.

math
You can put the equations into the form ax^2 + bx + c = 0 then use the quadratic formula to find the solutions.

math
The x intercept occurs where the line intercepts the x axis. The value of y at that point is 0. If you substitute 0 for y in your equation, what does x then equal?

math
The y intercept is where the line intercepts the y axis. So, it occurs when x = 0. Plug the value of 0 into your equation. What do you get?

Math
If you multiply the top row number by 5 and then add 1, you get the bottom row number.

Math
I am not sure why your teacher circled it. When the problem is solved, 8 fits into the sequence top and bottom.

Math
Now for the second part, how does the second row relate to the first. 2, 3, 5, 8, 12 11, 16, 26, 41, ? First I would check what would be added to the top row to get the bottom row. That would be 9, 13, 21, 33. Those don't seem very related. What would be multiply the top r...

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