Answer:5 7th grade swimmers.
--------------------------------- =
16 swimmers
s 7th grade swimmers
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16 swimmers
Now despite what you may believe, <u>1:3 is not 1/3 in this situation.</u> In this case, it means "1 equal part to 3 equal parts", which is a total of 4 equal parts. <u>In short, this question is to place point P 1/4 the distance from A to B.</u>
Firstly, how far apart is -1 from 7 (the x-coordinates)? That would be 8 units. Multiply 1/4 by 8:

Next, how far apart is 2 from 8 (the y-coordinates)? That would be 6 units. Multiply 1/4 by 6:

Next, since from -1 to 7 you are <em>increasing</em>, add 2 to -1:

1 is your x-coordinate
Next, since from 2 to 8 you are <em>increasing</em>, add 3/2 to 2:

7/2 is your y-coordinate.
<u>Putting it together, your answer is A. (1, 7/2)</u>
Answer:
k = - 3
Step-by-step explanation:
Given that x = 3 is a solution then it satisfies the equation, that is
2(3)² - 5(3) + k = 0
2(9) - 15 + k = 0
18 - 15 + k = 0
3 + k = 0 ( subtract 3 from both sides )
k = - 3
Answer:
The jetski is 2.28 dB loud when the person is 41 feet away.
Step-by-step explanation:
Loudness (L) ∝ 1 / Distance² (d²)
Introduce a constant 'K'
L = K (1/d²)
L = K/d²
K = Ld²
Find the K from a previously known information: If a person 8 feet from a jetski hears 60 decibels loud
∴ d = 8 ft , L = 60 db
K = 60(8²) = <em>3840</em>
How loud is the jetski when the person is 41 feet away?
Distance is now 41 ft
since: L = K/d²
∴ L = 3840 / 41²
L = 3840 / 1681
L = 2.28 db