Chuck stone is standing on top a higher platform. He fires a rock up into the air with his slingshot. Well it is in flight, the rocks distance above the ground is a quadratic function of time. At times one, two, and three seconds after he fired it, the rock is 68, 96, and 114 m above the ground, respectively. This shows that the graph of the quadratic function includes the points: (1,68) (2,96) (3,114) a.) write the particular equation from the rocks distance above ground (d) as a function of time (t).

b.) What is the highest the rock will be above ground?

c.) how high is the platform? (The rock is at the platform level when t = 0.)

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

step-by-step explanation:

what does 'mandy have ben 780 bottle caps. ' mean?

when the daily mileage is greater than 40 miles, unlimited mileage plan will save you money. 40 miles is the break-even point.

step-by-step explanation: