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Mathematics, 02.11.2019 11:31 natalie2sheffield
Urgent math will mark giving 25
correct answers !
question 1
a cooking show currently has about 223,000 regular viewers. the number of regular viewers has been decreasing at a rate of 4.7% per year.
which is the best prediction for the number of regular viewers the show will have in 6 years?
question 1 options:
35,420
37,167
104,810
167,056
question 2 (3 points)
a population of 30,000 fish is expected to shrink at a rate of 7.5% per year.
which is the best prediction for the fish population in 8 years?
question 2 options:
2813
3469
16,079
27,750
question 3 (3 points)
bromine-82 has a half-life of about 35 hours.
after 140 hours, how many milliliters of an 80 ml sample will remain?
question 3 options:
65 ml
20 ml
10 ml
5 ml
question 4 (3 points)
polonium-218 has a half-life of about 3 minutes.
after 15 minutes, how many milligrams of a 120 mg sample will remain?
question 4 options:
1.875 mg
3.75 mg
4.8 mg
7.5 mg
question 8 (3 points)
pippa is holding the end of her kite string 1.4 m above the ground. the kite string rises at a 63° angle of elevation. pippa has let out all 75 m of string.
to the nearest tenth of a meter, how high above the ground is the kite?
question 8 options:
34.0 m
35.4 m
66.8 m
68.2 m
question 9 (3 points)
using his telescope, tommy watches a bald eagle as it sits on the top of a cliff. the telescope is positioned so that the line of sight to the eagle forms a 38° angle of elevation. the telescope sits 1.3 m above the ground and the base of the telescope is 116 m from the base of the cliff.
to the nearest tenth of a meter, how high above the ground is the eagle?
question 9 options:
90.6 m
91.9 m
148.5 m
149.8 m
question 10 (3 points)
a photographer's camera sits on a tripod that is 1.8 m above the ground. the base of the tripod is 44 m from the base of a tree. the photographer spots a woodpecker in the tree at a 39° angle of elevation.
to the nearest tenth of a meter, how high above the ground is the woodpecker?
question 10 options:
37.4 m
36.0 m
35.6 m
34.2 m
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Answers: 2
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Urgent math will mark giving 25
correct answers !
question 1
a cooking...
correct answers !
question 1
a cooking...
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