Every 100 tons of the earth's crust contain about 28 tons of silicon. What is the ratio of the weight of silicon to the weight o
1 answer:
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The plus sign means that we have to sum all the terms inside of the second parenthesis, while the minus sign means that we have to change all the signs inside the last parenthesis:
Now we only have to gather all like terms:
Answer:
B
Step-by-step explanation:
A is correct because was added on both sides, which is supported by the Additive Property of Equality
C is correct because the Quotient Property of Logarithms states that
so is correct
D is correct because using the fact that it is easy to figure out that x=12
For B, there is no property supporting that statement.