Which of the following side lengths can form a triangle?

a) 2in, 3in, and 7in

b) 21cm, 23cm, and 44cm

c) 12mm, 36mm, and 53mm

d) 14ft, 17ft, and 30ft

Write a corresponding real world problem to represent 2x - 125=400

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed