Logarithm - math word problems
Number of problems found: 49
- Logarithm
Determine the number whose decimal logarithm is -3.8.
- Seating rules
In a class are 24 seats but in 7.B class are only 18 students. How many ways can student seat? (The class has 12 benches. A bench is for a pair of students.) Result (large number) logarithm and thus write down as powers of 10.
- Log
if ?, what is b?
- Exp
If ?, then n is:
- Exponential equation
In the set R solve the equation: ?
- Sequence
Calculate what member of the sequence specified by ? has value 86.
- Gain
Find the gain whenever the output power is 21x the input power.
- Log
Calculate value of expression log |3 +7i +5i2| .
- Logarithmic equation
Solve equation: log33(3x + 21) = 0
- Exponential equation
Solve for x: (4^x):0,5=2/64.
- 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.
- Intercept with axis
F(x)=log(x+4)-2, what is the x intercept
- Dice
How many times must throw the dice, the probability of throwing at least one six was greater than 90%?
- 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?
- Exponential equation
Solve exponential equation (in real numbers): 98x-2=9
- Geometric progression
In geometric progression, a1 = 7, q = 5. Find the condition for n to sum first n members is: sn≤217.
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