Which expression is equivalent to rootindex 4 startroot startfraction 16 x superscript 11 baseline y superscript 8 baseline over 81 x superscript 7 baseline y superscript 6 baseline endfraction endroot? assume x greater-than 0 and y not-equals 0.

Of four agents alpha, beta, gamma anddelta, three have to be sent together on amission. if alpha and beta cannot gotogether, beta and gamma cannot go togetherand gamma and delta cannot go together,then which of the following holds? 1. any three agents can be sent.2. alpha, delta and any one out of beta andv gamma can be sent.3. beta, gamma and any one out of alphaand delta can be sent.4. the mission is impossible.

Mount saint helen the great lakes and death valley are physical features of the earth which scientific term describes these features

What are the three stages of volcanic activity? a. active, magma, lava c. extinct, eruption, explosive b. eruption, quiet, explosive d. active, dormant, extinct