Answer:
S₁₅ = 645
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
=
[ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Using the nth term formula = 5n + 3 , then
a₁ = 5(1) + 3 = 5 + 3 = 8
a₂ = 5(2) + 3 = 10 + 3 = 13 , then
d = a₂ - a₁ = 13 - 8 = 5
Thus
S₁₅ = [ (2 × 8) + (14 × 5) ]
= 7.5( 16 + 70)
= 7.5 × 86
= 645
Answer and Step-by-step explanation:
| \
| \
| \
| \
| \
100 ft. | \
| 2 \
|_________\
x
Use tangent to find the x.
tan(2) =
Use a calculator to evaluate.
= 2863.6253
So, the boat is 2,863.63 feet from the shore.
#teamtrees #WAP (Water And Plant)
Answer:
Step-by-step explanation:
In the Point-Slope Formula, all the negative symbols give the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL inserting the coordinates into the formula with their CORRECT SIGNS.
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