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2 years ago

12

Determine which quadrants each coordinate point belong.

2 answers:

leonid [27]2 years ago

6 0

A = Quadrant 2
B = Between 3 and 4
C = Quadrant 4
D = origin
E = Quadrant 1
F = Quadrant 2
G = Quadrant 2
H = Quadrant 1
I = Quadrant 4
J = Quadrant 3

Luda [366]2 years ago

4 0

Answer:

See below.

Step-by-step explanation:

A. II

B. On the line.

C. III

D. Origin

E. I

F. II

G. II

H. I

I. IV

J. III

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zhenek [66]

<u>Understanding:</u>

The sum of a geometric series is, $a+ar+ar^2+ar^3+...$ , with a being the start point and r is the common ratio. We can also use the following formula to make life easier $S_n=a\frac{1-r^n}{1-r}$ , a is your start point, r is the common ratio, and n is the number of terms, which in our case is S7.

<u>Solution:</u>

Our start point is 1, $a=1$ ,

The common ratio is 5, $r=5$ ,

And finally, the number of terms is 7, $n=7$ .

$S_n=a\frac{1-r^n}{1-r} \\=(1)\frac{1-(5)^{(7)}}{1-(5)} \\=\frac{1-78125}{1-5} \\=\frac{-78124}{-4}\\=19531$

The answer is [A] 19531.

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