What is the greatest common factor of 142 and 148

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.