Answer:

Step-by-step explanation:
Given


Required
Determine the height at the third rebound
At first rebound;

Second rebound

Third rebound

Hence; the equation is:

Solving further;

Quick question, why didn't you just use the calculator on the device you took this photo with? Anyway, the answer is 5.62
Answer: The point (5,7) is on the line 5x+6y = 67
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Explanation:
(5,7) means x = 5 and y = 7 pair up
Plug in those values to get...
5x + 6y = 67
5*5 + 6*7 = 67
25 + 42 = 67
67 = 67
We get the same number on both sides after fully simplifying. This means the equation is true. A true equation in the last step means the first equation is true when (x,y) = (5,7).
Therefore, the point (5,7) is a solution and it is on the line 5x+6y = 67.
Answer:
Not for sure on some (hope this can help)
First photo:
<ABC = 60
<BCA = 90
<CAB = 30
Step-by-step explanation:
Second photo:
<XVR = 35
<RVS = 55
<WVS = 35
<RST = 20
<RSV = 70
<VSU = 20
<UST = 55
<TUS = 54
U divide both 12 and 15 by 3 and u get 4/5