The frequency distribution below shows the grade distribution of students' first exam in a history class. Find the standard deviation of this distribution. Round your answers to one decimal place. F= Frequency, G=grade f=3 g 46-56
f=6 g 57-67
f=10g 68-78
f=7 g 79-89
f=4 g 90-100

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte