math

urban encroachment is causing the area of a forest to decline at a rate of 7% per year. what is the half-life time of the forest?

  1. 👍
  2. 👎
  3. 👁
  1. .5 = (1 - .07)^t

    log(.5) = t log(.93)

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    on a map of scale 1:20,000 the area of forest is 50cm^2 .on another map the area of forest is 8cm^2.find the scale of the second map.

  2. World Geography

    1.Which of the following demographic characteristics distinguishes Europe's population from that of Asia? A.) More Europeans inhabit rural areas. B.) The European population is much younger. C.) Europeans are more concentration in

  3. Science

    1. Which of the following best describes an example of land reclamation? A. After an area is mined for copper, the soil is replaced and new plants are planted. B. After a forest is clear-cut, desertification occurs. C. After a

  4. MATHS

    A MAP HAS A SCALE OF 1 CM = 5 KM On a map, a forest is shown as a rectangle measuring 2 cm by 1.5 cm what is the real area of the forest

  1. Probability

    Oscar has lost his dog in either forest A (with probability 0.4) or in forest B (with probability 0.6). If the dog is in forest A and Oscar spends a day searching for it in forest A, the conditional probability that he will find

  2. World History

    Which best describes the purpose and outcomes of the First Crusade? Pope Urban II called for crusaders to protect pilgrims and defend the Holy Land, resulting in Europeans recapturing Jerusalem. Pope Urban II declared war against

  3. Algebra

    A certain forest covers an area of 2,000 square kilometers. Suppose that each year this area decreases by 6%. What is the function that best represents the area of the forest each year and how much area remains after 12 years?

  4. Science

    The biome with the fewest seasonal changes is the A. temperate deciduous forest. B. grassland. C. tropical rain forest. D. coniferous (boreal) forest.

  1. Calculus

    How fast is the area of a square increasing when thh side is 3m in length and growing at a rate of 0.8m/min? I did Area=x^2 Area'=2x(x') x'=area'/2xz x'=0.8/((2)(3)) Where did I go wrong? Thanks in advance.

  2. new social studies

    1.C 2.A 3.B 4.C 1.Which of the following most contributes to deforestation of the amazon rain forest? A. mining B. lumber miliing C. road construction D. tourism 2.Which of the following is an immediate negative effect of

  3. Science

    5. The process of desertification can occur when (1 point) A. plants usually found in the desert replace trees that have been cut down B. farmers use contour farming techniques C.an area of forest is clear-cut*** D.an area of

  4. Calculus

    A stone is dropped into the sea, causing circular waves whose radii increases at a constant rate of 1.5 per minute. At what rate is the circumference of the wave is changing? Thank you!

You can view more similar questions or ask a new question.