What is the answer to this question 830= 8 hundreds + how many tens+ 0 ones
830= how many tens+ 0 ones

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)