number is expression in scientific notation when it is written as a product of a factor and a power of 10 the factor must be greater than or equal to 1 or less than 10

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

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?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.