Add matrix
[1 3 7] + [6 5 8]
[2 9 6] + [5 8 9]

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units