Answer:
The answer is either a or c .
Step-by-step explanation:
If you notice the terms, they're
7, -21, 63, -189 and so forth.
7*-3 = -21 and -21 * -3 is 63 and so forth, meaning the "common ratio" is -3.
now, for a common ratio say "r", which is a fraction, namely less than ±1 and more than 0, or |r| < 1 , you do have a convergent sequence.
however this one notice, |-3| is 3, and that's greater than 1 clearly, therefore is divergent, meaning the summation has no finite value.
Y>50
y<78
so since u cant be less that 50 u have to be more and since u cant be taller than 78 u have to be less than 78
now:
y<78 but >50
Decimal equivalent of fraction 93/100 is 0.93
The two masses are equal, since 0.8 Kg = 800 g
