Simplify (3х2 – 2) + (2х2 – бх + 3).
5х2 – бх + 1
o5х2 – 6x – 1
O x2 – 6х + 1
ооо
б 8
1 то 1
+
5х2 - 8х + 3

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Define the type of sequence below. 7, 14, 28, 56, 112, a. neither arithmetic nor geometric b. arithmetic c. both arithmetic and geometric d. geometric