In triangle $xyz,$ $\angle y = 45^\circ$ and $\angle z = 60^\circ. $ if $xz = 4,$ then what is $xy$? [asy] unitsize(3 cm); pair x, y, z; x = (0,1); y = (-1,0); z = (1/sqrt(3),0); draw(x--y--z--cycle); label("$45^\circ$", y + (0. 3,0. 1), fontsize(10)); label("$60^\circ$", z + (-0. 2,0. 1), fontsize(10)); label("$x$", x, n); label("$y$", y, sw); label("$z$", z, se); label("$4$", (x + z)/2, ne); [/asy].

After rain, water soaks into the ground and is added to the groundwater. this process is known as a. groundwater pollution. b. groundwater recharge. c. groundwater recycling. d. groundwater filtration.

The alien enemies act of 1798 allowed the president to deport noncitizens considered dangerous. allowed the president to ignore laws he believed unconstitutional. made immigrants wait longer before becoming citizens. made it a crime to criticize the federal government.the alien enemies act of 1798 allowed the president to deport noncitizens considered dangerous. allowed the president to ignore laws he believed unconstitutional. made immigrants wait longer before becoming citizens. made it a crime to criticize the federal government.

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.