6 - 34 + 96 - 384 +...
a 1 = 6 , a 2 = a 1 * ( - 4 ) , a 3 = a 2 * ( - 4 ), a 4 = a 3 * ( - 4)...
a 5 = - 384 * ( - 4 ) = 1,536
a 6 = 1536 * ( - 4 ) = - 6,144
a 7 = - 6,144 * ( - 4 ) = 24,576
This is a sum of a geometric sequence:
S 7 = 6 - 24 + 96 - 384 + 1,536 - 6,144 + 24,576 = 19,662
Another way to solve this:
S 7 = a 1 * ( r^n - 1) / ( r - 1 ) = 6 * (( - 4) ^7 - 1 )/ (- 4 - 1)=
= 6 * (-16,385) / (-5 ) = 19,662
Answer:
C:8 <em><u>units</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>r</u></em><em><u>ight</u></em><em><u> </u></em><em><u>and </u></em><em><u>7</u></em><em><u> </u></em><em><u>unit</u></em><em><u>s</u></em><em><u> </u></em><em><u>up</u></em>
Step-by-step explanation:
sana po makatulong Yan
Answer:
A = 126 in²
Step-by-step explanation:
The formulate for a trapezoid Area is
A = (a+b)/2 *h
So, simple: 12+16 (2x 2) inches on each side = 16 Top
Bottom is 12 inches, and the height is 9 inches. Plug into the Formula
(12+16)/2 *9 = 126 in²
Answer: 2, x=18, y=30.
Step-by-step explanation: the bottom measurement is there on both shapes, which is 16 and 32. 32/16 = 2, so the scale factor is 2. Multiply the x and y measurements by 2.