91 4.
3
-2
1.
-5 -3 -2 11
2 3 4 5
X
By observation, what is by observation what is the solution to this system?
O (0, -3)
O (-3,0)
O no solution
infinitely many solutions

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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