Asked by Tomas
The number a is a number less than -3. What is the range of possibl values of 1/a^2 ?
a. 1/a^2 <-9
b. 1/a^2 <-3
c. -1/9<1/a^2<1/9
d. 0<1/a^2<1/9
e. 1/9<1/a^2<1/3
please answer and explain
a. 1/a^2 <-9
b. 1/a^2 <-3
c. -1/9<1/a^2<1/9
d. 0<1/a^2<1/9
e. 1/9<1/a^2<1/3
please answer and explain
Answers
Answered by
Steve
a < -3
a^2 > 9
1/a^2 < 1/9
a^2 is always positive, and 1/a^2 cannot be zero,
(d)
a^2 > 9
1/a^2 < 1/9
a^2 is always positive, and 1/a^2 cannot be zero,
(d)
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