What is the product? (x2+3y+7) [yy+1)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line