Lisa collects 30 shells on the beach. She gives 2/5 of them to her brother. How many shells did she give him?

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence. then write an expression to find dario's text messaging bill if he sends n text messages over 250.

Hurry which expression is equivalent to 3√x^5y?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?