
so, plus or minus? well, the angle is in the 1st quadrant, and on that quadrant, both cosine and sine are positive, so 4 = b
If we consider it as a combination problem, then we could calculate the how many combinations are there if we pick up three nodes out of six nodes, and then we have:

And the answer should be 20
Answer:
D
Step-by-step explanation:
The quotient of 2 and n is 2/n, not n/2, and if it's at most 6 that means it can equal 6 but can't go above it, so it's less than or equal to six. Hope this helped!
3/4+2/3= 17/12
Step-by-step explanation:
Answer:
No, they need $138.76 more
Step-by-step explanation:
April:
10% of $125 = 12.5
12.5 x 2 = 25
$125 + $25 = $150
May:
10% of $150 = $15
$15 x 2 = $30
$150 + $30 = $180 (180 is 20% more than 150)
June:
10% of $180 = $18
$18 x 2 = $36
$180 + $36 = $216
July:
10% of $216 = $21.60
$21.60 x 2 = $43.20
$216 + $43.20 = $259.20
August:
10% of $259.20 = $25.92
$25.92 x 2 = $51.84
$259.20 + $51.84 = $311.04
$125 + $150 + $180 + $216 + £259.20 + $311.04 = $1241.24
$1380 - $1241.24 = $138.76