please explain thouroughly.
please explain thouroughly.
Find k in the equation (k-3)x2 + (k-2)x - 5 so that: a) the sum of roots is 3. b) the product of roots is -4.
In a dolphin show, the height h in feet reached by a dolphin t seconds after breaking the surface water is given by h=-4t^2 - 20t.Find how many seconds after breaking the surface water will the dolphin...
please help me with this question you can get the answer by graphing but no use if no working out
The expression 3x2–6x–105 can be used to model the height of a ball thrown in the air after x seconds. Use the quadratic formula provided below to Vigure out how long will it take for the ball to hit the ground...
1/14=1/7x2-1/2x
In a European castle, a room with an arched ceiling is covered by a slanted roof. The ceiling is modeled by the equation: f(x)=-x^2 +4 and the roofline by the equation: f(x)=-2x +5. Assume...
Consider the equation ; x4 + ax3 - 6x2 + ax + 1 Find the parameter of a for which the equation has two distict positive roots .
4x2+8x-9=0
The company also discovered that it costs $28 to produce 2 camera cases, $50 to produce 4 camera cases, and $140 to produce 10 camera cases. Find the total cost of profucing 12 camera cases.
The length of a rectangle is 9 less than twice its width and the area is 180. Write an equation and define the length and width.
i need to find the sode length of the square
a) simplify (x2-4x-12)(2x+3)2 / 2x2-9x-18 b) hence, show that [(x2-4x-12)(2x+3)2/ 2x2-9x-18] - 7x is always positive for any values of x, except x = -3/2 or 6. My...
Round all answers to two decimal places when necessary. Check your answer(s) graphically or with a table. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION...
Solve the given equation using any of the methods you have learned. Round all answers to two decimal places when necessary. Check your answer(s) graphically or with a table. (Enter your answers as...
The current through a particular wire can be modeled by I(t) = 2t2 − 6t + 7 where I(t) is the current in amperes after t seconds. (a) Find the current in the wire after 0.5 seconds. The current...
A Charter Flight charges a fare of $300 per person plus $6 per person for each unsold seat on a plane. If the plane holds 100 passengers and if X represents the number of unsold seats, find the following: A...
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What time does the football hit the ground? What is the maximum height it reaches and what time does it reach it?
What is the max height & how long does it take to reach it?