Pessoal oque eu vou colocar aqui não é uma questão é apenas uma dúvida que eu gostaria de tirar: O angulo externo de um quadrilatero e sempre o dobro do se angulo interno adjecente a ele???

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

In an improper fraction, is the numerator equal to, less than, or greater than the denominator