The time taken by the rock will be 8.77 seconds.
<h3>What is speed?</h3>
Speed is defined as the ratio of the time distance traveled by the body to the time taken by the body to cover the distance.
Given that:-
The equation for free fall at the surface of some planet (s in meters, t in seconds) is s = 2.86t²
The time will be calculated by using the speed formula.
Speed = Distance \ Time
25.1 = 2.86t² \ t
t = 25.1 / 2.86
t = 8.77 seconds
Therefore the time taken by the rock will be 8.77 seconds.
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8x+6-5x=1
3x+6=1
please vote my answer branliest. Thanks.
Answer: 13.69
Step-by-step explanation:

Multiply 82.14 by 100 to make it a whole number; since you're modifying the number, you must also multiply 6 by 100 in order to keep it balanced.


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Let's begin.
8214/600=13.69
600
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221'4
1800
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414'0
3600
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540'0
5400
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Answer:
Area = 8 square ft
Step-by-step explanation:
Area of a rectangle = Length × width
suppose length = x
width = y
Here it is given that x = 3 y - 2
width is given as y = 2 ft
∴ x = 3 × 2 -2
x = 6 -2
x = 4
Area of rectangle = length × width
A = 4 × 2
= 8 square ft