A plane takes off at an angle of 30 degrees and reaches a height of 10miles. what is the diagonal distance it has traveled from take off to its current position?(draw yourself a picture and label it)

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

What is the number 321,000,000 in scientific notation? also what is the number? ?