X=-1
i think that’s what it is
we have the sequence
-108, -91,-74,-57,...
we have
a1=-108
a2=-91
a3=-74
a4=-57
step 1
Find the common difference d
a2-a1=-91-(-108)=17
a3-a2=-74-(-91)=17
so
d=17
step 2
thw general equation for an arithmetic sequence is equal to
an=a1+d(n-1)
we have
d=17
a1=-108
substitute
an=-108+17(n-1)
an=-108+17n-17
an=-125+17n
therefore
the answer is an=-125+17n
Answer:
huh....is there a problem
Answer:
here you go
Step-by-step explanation:
To find the slant height of triangular faces: The slant height of a triangular pyramid is generally represented by 's'. Add all the areas together. Thus, the surface area of a triangular pyramid formula is 1⁄2(a × b) + 3⁄2(b × s) in squared units.