# Equation + exponential equation - math problems

#### Number of problems found: 54

- Exponential equation

In the set R solve the equation: ? - Exponential equation

Solve exponential equation (in real numbers): 9^{8x-2}=9 - Exponential equation

Find x, if 625 ^ x = 5 The equation is exponential because the unknown is in the exponential power of 625 - Exponential equation

Solve for x: (4^x):0,5=2/64. - Exponential equation

Determine the value of having y in the expression (3^y): (4^-1)=36. Unknown y is a natural number greater than zero. - Log

if ?, what is b? - One third power

Which equation justifies why ten to the one-third power equals the cube root of ten? - Exp

If ?, then n is: - Sequence

Calculate what member of the sequence specified by ? has value 86. - Interest

What is the annual interest rate on your account if we put 32790 and after 176 days received 33939.2? - Coordinate

Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5^{x} - Compound interest

Calculate time when deposit in the bank with interest 2.5% p.a. doubles. - Car value

The car loses value 15% every year. Determine a time (in years) when the price will be halved. - Geometric sequence

In the geometric sequence is a_{4}= 20 a_{9}= -160. Calculate the first member a_{1}and quotient q. - Radioactive material

A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years? - Radioactivity

After 548 hours decreases the activity of a radioactive substance to 1/9 of the initial value. What is the half-life of the substance? - What is

What is the annual percentage increase in the city when the population has tripled in 20 years? - Geometric progression

In geometric progression, a1 = 7, q = 5. Find the condition for n to sum first n members is: sn≤217. - Demographics

The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase of population? - Decibel

By what percentage does the sound intensity increase if the sound intensity level increases by 1 dB?

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