Answer:
option B
28
Step-by-step explanation:
Given in the question,
C(8,2)
Formula to use
here n = 8
r = 2
We have to calculate combinations of 8 object taken 2 at a time, then
8C2
8! / 2! * (8 - 2)!
56/2
So, 8C2 = 28
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Explanation:
|4b + 4| = |2b + 8|
<em>Solve absolute value</em>
Either 4b + 4 = 2b + 8 or 4b + 4 = −(2b + 8)
4b + 4 = 2b + 8 <em>(Possibility 1)</em>
4b + 4 − 2b = 2b + 8 − 2b <em>(Subtract 2b from both sides)</em>
2b + 4 = 8
2b + 4 − 4 = 8 − 4 <em>(Subtract 4 from both sides)</em>
2b = 4
2b / 2 = 4 / 2 <em>(Divide both sides by 2)</em>
b = 2
4b + 4 = −(2b + 8) <em>(Possibility 2)</em>
4b + 4 = −2b − 8 <em>(Simplify both sides of the equation)</em>
4b + 4 + 2b = −2b − 8 + 2b <em>(Add 2b to both sides)</em>
6b + 4 = −8
6b + 4 − 4 = −8 − 4 <em>(Subtract 4 from both sides)</em>
6b = −12
6b / 6 = -12 / 6 <em>(Divide both sides by 6)</em>
b = -2
the answer is h=0.5m+2 I think
