$a_1=-9\\\\a_2=a_1-8\to a_2=-9-8=-17\\\\a_3=a_2-8\to a_3=-17-8=-25\\\\a_4=a_3-8\to a_4=-25-8=-33\\\\\text{The general term of an arithmetic sequence:}\\\\a_n=a_1+(n-1)d\\\\a_1-first\ term\\d-common\ difference\\\\\text{We have}\ a_1=-9\ \text{and}\ d=-8.\ \text{Substitute:}\\\\a_n=-9+(n-1)(-8)=-9-8n+8=-8n-1\\\\\text{Put n = 43 and calculate}\ a_{43}\\\\a_{43}=-8(43)-1=-344-1=-345\\\\Answer:\ \boxed{?=-345}$

4 0

2 years ago

WILL MARK BRAINLISET PLUS A THANKS!!!

harkovskaia [24]

You want to find the area of the circle. The formula for the area of a circle is A=πr^2 (Area=pi times radius squared). The diameter is the distance across the circle. Radius is half the diameter. Diameter=3. 3 divided by 2 equals 1.5. So, plug it into the equation. A=π1.5^2 (Area=pi times 1.5 squared).

8 0

2 years ago

Some steps to construct an angle MNT congruent to angle pqr

xxTIMURxx [149]

Maintaining the same width of the compass as AB, draw an arc from point X such that it intersects the afternoon drawn from N in a point

4 0

2 years ago

If the standard deviation of a data set was originally 8, and if each value in the data set was multiplied by 8.5, what would be

maxonik [38]

Answer:

D. 68 (APEX).........................................................................................

6 0

2 years ago