Answer:
In a plus sign
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
..........
.........
Answer:
E' (-2,5)
F' (-3,1)
G' (-2,-1)
H' (0,3)
Step-by-step explanation:
The rule for 90 degree clockwise rotation is (h,k) -> (k,-h). This means flip the x-value's sign and then switch x and y's position. For example E (-5,-2), first flip x's sign (5,-2) and then switch x and y's places (-2,5).
900 x² + 500 x= 1600 /:100
9 x² + 5 x = 16
9 x² + 5 x - 16 = 0
x 1/2 =
![\frac{-5\pm \sqrt{5^{2}-4*9*16 } }{18} = \frac{-5\pm \sqrt{25+576} }{18}= \\ = \frac{-5+24.52}{18}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-5%5Cpm%20%5Csqrt%7B5%5E%7B2%7D-4%2A9%2A16%20%7D%20%7D%7B18%7D%20%3D%20%20%5Cfrac%7B-5%5Cpm%20%5Csqrt%7B25%2B576%7D%20%7D%7B18%7D%3D%20%5C%5C%20%3D%20%5Cfrac%7B-5%2B24.52%7D%7B18%7D%20%20)
x = 1.084
The interest rate:
r = x - 1 = 1.084 - 1 =
0.084 = 8.4 %Answer: D) 8.4 %