The first figure of the sierpinski triangle has one shaded triangle. The second figure of the sierpinski triangle has three shaded triangles. The third figure of the sierpinski triangle has nine shaded triangles. Which summation represents the total number of shaded triangles in the first 15 figures? sigma-summation underscript n = 1 overscript 15 endscripts 1 (3) superscript n minus 1 sigma-summation underscript n = 1 overscript 15 endscripts 3 (1) superscript n minus 1 sigma-summation underscript n = 1 overscript 15 endscripts 1 (one-third) superscript n minus 1 sigma-summation underscript n = 1 overscript 15 endscripts one-third (1) superscript n minus 1.
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SAT, 25.06.2019 22:00
Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.
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SAT, 28.06.2019 06:30
Which of the following ideas did greek philosopher democritus contribute to the atomic theory? a. each object is made up of one atom, which varies in size from very small to very large. b. matter is composed of only one kind of particle, which can be easily destroyed. c. every element has a specific type of atom, which remains the same size in all forms of matter. d. all matter is composed of small particles, which combine to make larger objects.
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SAT, 29.06.2019 07:30
of the following words means "to make something unnecessary"? who talke constantlyor in na
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The first figure of the sierpinski triangle has one shaded triangle. The second figure of the sierpi...
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