What is the solution of the following system?

Use the substitution method.

{y−2x=816+4x=2y

Determine domain and range, largest open interval, and intervals which function is continuous.

If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?

Aletter in the word electric is chosen at random. complete each sentence. there are possible outcomes. the theoretical probability that a vowel will not be chosen is the ratio . the theoretical probability that the letter n will be chosen is .