If 30% of john's photographs were perfect, but 210 photographs were not perfect, then how many photographs were there in all?

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

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?

Amap of british columbia has a scale of 1: 1 723 000. the distance on the map between prince george and cache creek is 8 11/16 in. what is this distance to the nearest mile