Question 3(multiple choice worth 1 points)
(04.03 mc)

the following proof shows an equivalent system of equations created from another system of equations. fill in the missing reason in the proof.

statements reasons
2x + 2y = 14
−4x + 6y = 12 given
2x + 2y = 14
−2x + 3y = 6 ?
multiplication property of equality
addition property of equality
division property of equality
subtraction property of equality

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost