Type the correct answer in each box. Use numerals instead of words. In Joey's neighborhood, the ratio of families with dogs to families with cats is 5 to 2. There are 15 more families with dogs than families with cats. In Joey's neighborhood families have[ ]cats and families[ ]have dogs.

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

Corresponding angles are a. always b. sometimes c. never congruent