Let s and d represent the number of sit-ups Jerry does and the number of days Jerry has been doing them (not counting the first), respectively. The problem statement tells us
s = 16 + 2d
This is the equation that can be solved to find d.
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Here is its solution.
Since we want to find d (the number of days), we can subtract 16 and divide by 2.
s - 16 = 2d
(s - 16)/2 = d
d = (s/2) - 8
Example:
Today Jerry did 22 sit-ups. He has been doing them for ...
(22/2) - 8 = 11 - 8 = 3 . . . days
Answer:
x = 5
Step-by-step explanation:
Angle Bisector Theorem: When a ray bisects an angle, we get 2 congruent smaller angles
Step 1: Set equation equal to each other (Angle Bisector Theorem)
5x + 3 = 7x - 7
Step 2: Subtract 5x on both sides
3 = 2x - 7
Step 3: Isolate <em>x</em> term (Add 7 to both sides)
10 = 2x
Step 4: Isolate <em>x</em> (Divide both sides by 2)
x = 5
The table is incorrect.
The correct table would be:
0-5
1-4.8
2-4.6
3-4.4
4-4.2
5-4.0
6-3.8
Im sure this answers your question greatly