{x+y=2x+2y=11 {3x+3y=62x+4y=22
Two systems of equations are shown. Which TWO of the following statements each provide sufficient reasoning to show that the systems have the same solution?

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

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?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?