Select all of the shapes below that are prisms. Justify your answer.

Okay, a final, more tricky one: Which reaction conditions tends to favor SN1 and E1 reactions? a) A strong base and strong nucleophile b) A weak base and poor nucleophile c) A weak base and strong nucleophile d) A strong base and poor nucleophile

\( \frac { \sin ( \alpha + \beta ) x + \sin ( \alpha - \beta ) + \sin \alpha x } { \cos 2 \beta x - \cos 2 \alpha x } \)

If \( 2(x-y)=3 y \), what is the ratio \( \frac{x}{y} ? \)

Given that \( z=1+i \sqrt{3} \) uxpress \( z^{4} \) in the form \( r(\cos \theta+i \sin \theta) \) whore \( r>0 \) and \( -\pi<\theta \leq \pi \)

Realiza las siguientes divisiones, las divisiones inexactas debes trabajarla al menos con dos decimales: a) \( 658906439856893709: 6 \) b) \( 9987654392765267: 9 \) c) \( 5490683425980346: 25 \) d) \( 90865785673009971598: \) 84