The Jordan Middle School Girls Choir is made up of sopranos and
altos. If there are 30 sopranos and
10 altos, then what percent of the choir are the
sopranos?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?