# Exponential equation - math word problems

#### Number of problems found: 54

- Exponential equation

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

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

If ?, then n is: - Sequence

Calculate what member of the sequence specified by ? has value 86. - One third power

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

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

Suppose that a body with temperature T1 is placed in surroundings with temperature T0 different from that of T1. The body will either cool or warm to temperature T(t) after time t, in minutes, where T(t)=T0 + (T1-T0)e^(-kt) . If jello salad with 30 degree - 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?

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