True or false
the value 3pi/2 is a solution for the equation 2sin^2x -sin x -1=0

False

Step-by-step explanation:

The given equation is:

Substituting x= in the above given equation, we have

=

=

=

=

Thus, the value of the given equation by substituting the value of x is equal to 2 and not zero, therefore the given statement is false.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: