The cumulative frequency graph gives information about the lengths, in minutes, of 80 telephone calls
80
60
Cumulative
frequency
40
20
10
15
20
25
30
Length of call (minutes)
Find an estimate for the interquartile range of the lengths of the 80 calls.

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

Miranda is braiding her hair. then she will attach beads to the braid. she wants 1_3 of the beads to be red. if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?