Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 1055156: The model y = -x^2 + 2x + 27 describes the height (y, in meters) of a diver (after x seconds) who jumps from a cliff that is 27 meters above the water. Will the diver ever reach a height of 29 meters? What is the maximum height the diver reached at 1 second?
Click here to see answer by ewatrrr(24785)  |
Question 1055226: A baker has modeled the monthly operating costs for making wedding cakes by the function y=0.5x^2-12x+150 , where is the total cost in dollars and is the number of cakes prepared. What is the minimum cost and how many cakes should be prepared each month to yield the minimum cost?
Click here to see answer by ikleyn(52754)  |
Question 1055220: A rectangle has one vertex on the line y = 8 – x (x > 0), another at the origin, one on the positive x-axis, and one on the positive y-axis. Express the area A of the rectangle as a function of x. Find the largest area A that can be enclosed by the rectangle.
Click here to see answer by ikleyn(52754)  |
Question 1055415: in a teddy bear factory 130 bears would be sold for $8 each. the company knows that if they charge an extra $1 for each bear, then amount of sales would drop by 4 bears. if the company decides to increase each bear by $x, write an expression for the amount of revenue.
Click here to see answer by Theo(13342)  |
Question 1055718: In two or more complete sentences, compare the number of x-intercepts in the graph of f(t) = t^2 to the number of x-intercepts in the graph of g(t) = (t – 8)^2.
Be sure to include the transformations that occurred between the parent function f(t) and its image g(t).
Click here to see answer by stanbon(75887) |
Question 1055717: In two or more complete sentences, compare the number of x-intercepts in the graph of f(x) = x^2 to the number of x-intercepts in the graph of g(x) = -x^2 -5.
Be sure to include the transformations that occurred between the parent function f(x) and its image g(x).
Click here to see answer by stanbon(75887) |
Question 1055863: Maricopa's Success scholarship fund receives a gift of $ 170000. The money is invested in stocks, bonds, and CDs. CDs pay 3.25 % interest, bonds pay 4.4 % interest, and stocks pay 11.4 % interest. Maricopa Success invests $ 25000 more in bonds than in CDs. If the annual income from the investments is $ 10055 , how much was invested in each account?
Maricopa Success invested $
in stocks.
Maricopa Success invested $
in bonds.
Maricopa Success invested $
Click here to see answer by stanbon(75887) |
Question 1056877: A rectangular sheet of brass is twice as long as it is wide. Squares, 3 cm times 3 cm, are cut from each corner , and the ends are turned up to form an open box having a volume of 1248cm^3. What are the dimensions of the original sheet of brass?
Click here to see answer by josmiceli(19441)  |
Question 1056945: Follow the process of completing the square to solve x^2-10x+8=0.
What is the value of the constant that will be isolated on the right side of the equation in step 3?
-32
-12
-8
I answered -8 and was wrong. What did I do wrong?
Click here to see answer by jorel555(1290) |
Question 1056945: Follow the process of completing the square to solve x^2-10x+8=0.
What is the value of the constant that will be isolated on the right side of the equation in step 3?
-32
-12
-8
I answered -8 and was wrong. What did I do wrong?
Click here to see answer by ikleyn(52754)  |
Question 1057359: A man is standing on a rock and shoots a firework into the air. The path of the firework can be modelled by the equation h(x)=-5x^2 +7x +3, where h(x) is height in meters and x is time in seconds.
Must find height rocket was released from the ground
Max height rocket reaches
How many seconds it reaches its max height
After how many seconds does it hit the ground
Click here to see answer by ikleyn(52754)  |
Question 1057359: A man is standing on a rock and shoots a firework into the air. The path of the firework can be modelled by the equation h(x)=-5x^2 +7x +3, where h(x) is height in meters and x is time in seconds.
Must find height rocket was released from the ground
Max height rocket reaches
How many seconds it reaches its max height
After how many seconds does it hit the ground
Click here to see answer by josmiceli(19441)  |
Question 1057399: Gabe drops a hammer from an apartment that is 30 meters above the
ground. The height of the hammer in meters, ℎ, after t seconds is modeled by
the function shown.
ℎ(t) = −t^2 − 2t + 30
Find the approximate number of seconds it will take for the hammer to hit the
ground. Round your answer to the nearest whole number.
□ 0
□ 5
□ 10
□ 30
Click here to see answer by josmiceli(19441)  |
Question 1057398: Mario is constructing a frame for a 10 in. by 8
in. photo. He wants the frame to be the same
width all the way around and the total area of
the frame and photo to be 120 square inches.
What is the dimension of the frame?
Click here to see answer by stanbon(75887) |
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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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