Determine the number of terms, n, given the geometric series -1 - 2 - 4 - 8 - ... and Sn=−31.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

6 equilateral triangles

answer: n word

step-by-step explanation:

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