Exponential equation - practice problems - page 6 of 7
Number of problems found: 127
- Calculate 3803
Calculate the value of y: 3^y = 0.333 - Expression 3801
What is the value of x in the expression 8^x = 1/64 - Exponential equation
Find x, if 625^x = 5 The equation is exponential because the unknown is in the exponential power of 625 - The deposit
A deposit has been placed for one year at an annual rate of 4.5%. The amount rose to € 2,612.5 after one year. Find initial deposit. - Precision 3390
The price of the device is reduced by one-fifth every year. How long before the price of the device drops to one-tenth of the price? Specify years and months with precision. - The city 3
The city has 22,000 residents. How long is it expected to have 25,000 residents if the average annual population growth is 1.4%? - To the cinema
Jane at 8 AM got a message that all 1093 school pupils would go to the cinema. Within 20 min she said it to the three friends. Each of them again for 20 minutes said to the other three. In this way, the message spread further. At what time do all the scho - Car value
The car loses value by 15% every year. Determine a time (in years) when its price will halve. - Insert into GP
Between numbers 5 and 640, insert as many numbers to form a geometric progression so the sum of the numbers you entered will be 630. How many numbers must you insert? - Half life
Determine the half-life of bismuth, when bismuth weight from the original weight of 32 g was only 2 grams in 242 minutes. - Geometric sequence
In the geometric sequence is a4 = 20 a9 = -160. Calculate the first member a1 and quotient q. - Lion or virgin
We toss the coin, and every throw fits a lion or a virgin with an equal probability of 1/2. Determine how much we have to make throws that, with the probability of 0.9, lions fell at least once. - Sum-log
The sum of two numbers is 32, and the sum of their logarithms (base 10) is 2.2. Determine these numbers. - Geometric sequence 3
In geometric sequence is a8 = 312500; a11= 39062500; sn=1953124. Calculate the first item a1, quotient q, and n - number of members by their sum s_n. - Interest
What is the annual interest rate on your account if we put 32790 and after 176 days received 33939.2? - Exp
If sqrt[7](20²-12²) = sqrt[n](256), then n is: - Coordinate
Determine the missing coordinate of the point M [x, 11] of the graph of the function f by rule: y = 3x - Log
If log4 x+ log8 x = log_b x, what is b? - Crystal
The crystal grows every month 1.2 permille of its mass. How many months to develop a crystal from weight 177 g to 384 g? - Sequence
Calculate what member of the sequence specified by (5n-2+15) has value 20.
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