# Exponential equation - math word problems

#### Number of problems found: 54

• Exponential equation Solve exponential equation (in real numbers): 98x-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 = 5x
• 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 a4 = 20 a9 = -160. Calculate the first member a1 and quotient q. A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years? 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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