¡Por favor, ayuda!Determina para cuales de las siguientes ecuaciones la solunción es el conjunto vacío, explica tu respuesta. A- (sen (×) - 1) (sen (×) + 1)=0B- (2 cos(×) - 1) (cos (x) +2)= 0C- (sen(×) - 2) (sen (×) + 3)= 0D- (5 sen (×) - 1) (7 sen (×) + 2) =0

answer: i believe its b. if you sound out the sentences that sounds wrong.

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

option: d is the correct answer.

d) none of the above.

step-by-step explanation:

clearly from the figure attached to the question we could see that there is no shape given. hence without any shape given in the figure and after rotation we can't obtained a square pyramid.

since, to obtain a image we need a proper figure of the pre-image so that it can be transformed.

hence, the correct answer is:

d) none of the above.

step-by-step explanation: