# Exponentiation + real numbers - math problems

#### Number of problems found: 6

• Logarithmic equation
Solve equation: log13(7x + 12) = 0
• Is equal
Is equal following terms? -9 21 = (-9) 21
By introducing a new variable solve biquadratic equation: ?
• Events
Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try.
• Crystal
The crystal grows every month 1.2 permille of its mass. For how many months to grow a crystal from weight 177 g to 384 g?
• Pool
If water flows into the pool by two inlets, fill the whole for 19 hours. The first inlet filled pool 5 hour longer than the second. How long pool take to fill with two inlets separately?

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Exponentiation - math problems. Real numbers - math problems.