Answer:
200
Step-by-step explanation:
Let x and 2x be the number of red tiles and blue tiles respectively.
x + 2x = 600
3x = 600
=> x = 200
No. of red tiles = 200
No. of blue tiles = 2(200) = 400
The answer should be the third one I believe
Answer:
A. 8.09 × 10^-5
Step-by-step explanation:
4.1 x 10^-6 = 0.0000041
0.000085 - 0.0000041 = 0.0000809
0.0000809 = 8.09 x 10^-5