Can someone me? when i put 4.50 x 33.47 in the calculator it gives me a weird number and i have a test tomorrow! i really wanna learn how to do this

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a