Answer:
She applied the exponent -2 to 4(-2) instead of applying the exponent to just -2.
Step-by-step explanation:
i got my rerecord from my flash cards my teacher made of some answers
Answer:
D) x = 12
Step-by-step explanation:
Given:

1. Multiply both sides by 4

2. Subtract 3x from both sides

3. Add 28 to both sides

4. Divide both sides by 7 to isolate the variable:

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Answer:
The miner would have 3 1/2 of radioactive material in the sample at the beginning of the 7th day.
Step-by-step explanation:
hope this helped!
A Rational Number is a real number that can be written as a simple fraction (i.e. as a ratio).
Most numbers we use in everyday life are Rational Numbers. gave me thanks
Answer:
There is usually a word that represent the operation for example difference to subtract
Step-by-step explanation: