Example...
4^x = 16
log(4^x) = log(16)
x*log(4) = log(16)
x = log(16) / log(4)
A+(-1.6)=-3.7
+1.6 +1.6
a=-2.1
Answer:
1.) rectangle and triangle
2.)4 because 2 for each rectangle
3.)yes and a rectangle has 4 vertics and 4 sides and 2 equal lengths
36+30=66 66-16=50 so your answer is 50
Answer:

Step-by-step explanation:
We require to find the third side of the triangle.
Using Pythagoras' identity
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x represent the third side, then
x² + 7² = 8², that is
x² + 49 = 64 ( subtract 49 from both sides )
x² = 15 ( take the square root of both sides )
x = 
Thus
sinΘ =
= 