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Whitepunk [10]
3 years ago
10

David, a platform diver, dives into the pool during practice. The height of David above the water at any given time, s, can be m

odeled by the quadratic function h(s).
Each of the following functions is a different form of the quadratic model for the situation above. Which form would be the most helpful if attempting to determine the time required for David to enter the water?

A. h(s) = -4.9(s - 2)(s + 1)

B. h(s) = -4.9s(s - 1) + 9.8

C. h(s) = -4.9(s - 0.5)2 + 11.025

D. h(s) = -4.9s2 + 4.9s + 9.8

Mathematics
1 answer:
ella [17]3 years ago
4 0

Check the pictures below.

if we knew the roots/solutions of the equation, we can set h(s) = 0 and solve for "s" to find out how many seconds is it when the height is 0.

if you notice in the first picture, when f(x) = 0, is when the parabola hits a root/solution or the ground, for David he'll be hitting the water surface, and the equation that has both of those roots/solutions conspicuous is

h(s) = -4.9(s - 2)(s + 1).

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iragen [17]

Answer: 7/8 + 4/8 = Exact form- 11/8

                                   Decimal form- 1.375

               17/25 - 9/25 = Exact form- 8/25

                                       Decimal form- 0.32

                63/46 - 81/46 = Exact form- -9/23

Step-by-step explanation: Hope this helped.

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3 years ago
The city airport and the train station are 45 miles apart. there are 9 gas stations equally spaced between the airport and train
Zielflug [23.3K]

The distance between the two adjacent gas stations will be 5 miles.

<h3>What is the difference between a ratio and a proportion?</h3>

A ratio is an ordered pair of integers a and b expressed as a/b, with b never equaling 0. A percentage is a mathematical expression in which two ratios are specified to be equal.

Distance between city airport and the train station = 45 miles

Stations equally spaced between the airport and train station=9

Let the space between two gas stations will be x;

x = 45/9

x=5 mile.

Hence, the distance between the two adjacent gas stations will be 5 miles.

To learn more about the ratio, refer to the link;

brainly.com/question/14335762

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I’m not really much sure, I tried.
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Ivahew [28]
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Evaluate 3x2 - 1 when x = 2.
Shalnov [3]

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