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Sedaia [141]
3 years ago
13

Sam needs an average of 65 on his two science test. He scored 60 on his first test what is the minimum he can score on his secon

d test.
Mathematics
1 answer:
fenix001 [56]3 years ago
7 0

70

to find the answer do 60+x  / 2  =65

Solver for x

multiply 2 on both sides to get 130

60+x=130

x=70

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You can use the properties of logarithm to get to the solution.

The approximate value for given term is given by

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<h3>What is logarithm and some of its useful properties?</h3>

When you raise a number with an exponent, there comes a result.

Lets say you get

a^b = c

Then, you can write 'b' in terms of 'a' and 'c' using logarithm as follows

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Some properties of logarithm are:

log_a(b) = log_a(c) \implies b = c\\\\\log_a(b) + log_a(c) = log_a(b \times c)\\\\log_a(b) - log_a(c) = log_a(\frac{b}{c})

<h3>Using the above properties</h3>

log_3(2) + log_3(7) = log_3(2 \times 7) = log_3(14)\\\\0.631 + 1.771  = log_3(14)\\\\log_3(14) = 2.402

Thus,

The approximate value for given term is given by

log_3(14) \approx 2.402

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Noemi strings together x green beads at $0.75 each with 3 blue beads at $0.30 each. She makes a bracelet that averages $0.60 per
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Given that Noemi makes a bracelet that averages $0.60 per bead, we need to write an equation that models this average bead cost. This can be found by taking the total cost of the beads and dividing it by the number of beads used.

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