Logarithm - practice problems - page 3 of 5
Direction: Solve each problem carefully and show your solution in each item.Number of problems found: 93
- Powers 3
2 to the power of n divided by 4 to the power of -3 equals 4. What is the value of n? - Microorganisms
The first generation of microorganisms has a population of 13500 members. Each subsequent generation is 11/10 times the previous one. Find out how many generations will reach at least three times members of the first generation. - Intercept with axis
F(x)=log(x+4)-2, what is the x intercept - Geometric progression
In geometric progression, a1 = 7, q = 5. Find the condition for n to sum first n members is sn≤217.
- One-eighth 6206
Water lilies grow on the pond, and their number doubles every day. We will cover the whole level in 12 days. In how many days will one-eighth of the surface be covered? - Water lilies Water lilies are growing on the pond, and their number doubles every day. If the whole layer is covered in 12 days, how many days will it take to cover eight layers?
- 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 we placed jello salad at 30 - Exponentially 6065
The intensity of daylight penetrating seawater decreases exponentially depending on its depth. At a depth of 6m, it is reduced by half. The underwater camera needs at least 75% of the daylight intensity for recording. To what depth can we use it under thi - Interest 6047
Mr. Demikát took out a loan worth 5,000 euros from the bank with an interest rate of 12 percent. How many months will it repay if the monthly payment is 80 euros?
- Exponential equation
Solve for x: (4^x):0,5=2/64. - Photocopier
A photocopier enlarges a picture in the ratio of 7:4. How many times will a picture of size 6cm by 4cm be enlarged to fit on a 30cm by 20 cm page? - Population 4485 The population is 22000 people. With an annual increase of 1.4%, there will be 25,000 people. How many years will it be?
- Equation: 4386 Solve the power equation: 2.1463 = 0.4179x0.419
- Determine 4104 Determine the value of x in this equation: (0.125^x) · 104 = 5000
- Expression: 4085
Determine the x and y values in the expression: x! · 10^y = 0.0504. - Expression 3887 Determine what z equals in the expression 169^z = 2 · 6.5
- 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 - 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 has 22,000 residents. How long is it expected to have 25,000 residents if the average annual population growth is 1.4%?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
