1. Which of the following equations is equivalent to 2(a + 6) - 3(a - 5) = 18 1. 5a - 3 = 18
2. -a + - 3 = 18
3. 5a + 27 = 18
4. -a + 27 = 18

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Write a corresponding real world problem to represent 2x - 125=400