Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 623544: A catapult launches a boulder with an upward velocity of 112 ft/s. The height of the boulder, h, in feet after t seconds is given by the function .
How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary.
Click here to see answer by solver91311(24713)  |
Question 623944: I have a problem
I need to find the mean on this problem, and I know you add them up and divide by how many numbers are there, but this one I am not sure if this is correct.
Find the mean:
scores in golf: 4, -5, 2, -5, 7, -3, 5, -3, 4
Well when I add them up I get 6 and then divide by 9, is this correct?
Please help
Thanks
Gina
Click here to see answer by jsmallt9(3758) |
Question 624098: 1) Find the vertex, the line of symmetry, and the max or min value of f(x). Graph the function.
f(x)=1/3(x+8)^2+9
The vertex is ?
The line of symmetry is ?
What is the max/min value of f(x)?
2) Find the x-intercepts and y-intercepts for f(x)
f(x)=x^2-6x+7
The x-intercept is?
The y-intercept is?
3)Give exact and approximate solutions to three decimal places.
(x-3)^2=12
What are the exact solutions?
What are the approximate solutions?
4) Find the vertex, the line of symmetry, and the max or min value of f(x). Graph the function.
f(x)= -x^2+12x+2
The vertex is?
The equation of the line of symmetry is?
The max/min of f(x) is?
The value of f(6)=38 is max or minimum?
Click here to see answer by solver91311(24713)  |
Question 624832: In solving the equation (x + 1)(x – 2) = 4, Eric stated that the solution would be
x + 1 = 4 => x = 3
or
(x – 2) = 4 => x = 6
However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to understand better; solve the problem yourself, and explain your reasoning.
Click here to see answer by shalon(2) |
Question 625414: if an M-16 is fired straight upward, then the height h(t) of the bullet in feet at time t in seconds is given by h(t) = -16t^2 + 325t
a. what is the height of the bullet 5 seconds after it is fired ? evaluate h(5)
b. How long does it take for the bullet to return to earth ?
Click here to see answer by lwsshak3(11628) |
Question 625213: I need help, I am stuck on this word problem from Quadratic Equations:
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.5x^2+11x+15, where x is the number of days since teh concert was first announced. When will the daily ticket sales peak and how many tickets will be sold that day?
Click here to see answer by lwsshak3(11628) |
Question 625213: I need help, I am stuck on this word problem from Quadratic Equations:
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.5x^2+11x+15, where x is the number of days since teh concert was first announced. When will the daily ticket sales peak and how many tickets will be sold that day?
Click here to see answer by jsmallt9(3758) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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