Which impact did mountains have on the development of Greek city-states? (1 point)

Question

They isolated the city-states and made them independent.***

They helped increase trade between the city-states.

They had fertile soil so people farmed in the mountains.

People in the mountains worked as sailors and merchants.

Answer 1

The correct answer is: They isolated the city-states and made them independent.

Answer 2

How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses

(8 − 18) + (49 + 79)
Left Parenthesis 8 minus 18 Right Parenthesis plus Left Parenthesis Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis

(18 − 8) + (−949 + 79)
Left Parenthesis 18 minus 8 Right Parenthesis plus Left Parenthesis negative 9 Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis***

(18 − 9 − 8) + (−49 + 79)
Left Parenthesis 18 minus 9 minus 8 Right Parenthesis plus Left Parenthesis negative Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 Right Parenthesis

(18 − 8 − 9)

Answer 3

The correct answer is: (18 - 8) + (-949 + 79)

Answer 4

What should you do if a place value is missing a number?(1 point)

1. Add a zero.***

2. Remove the last digit(s) in the number that has the additional place values.

3. Subtract without it.

4. Nothing.

Answer 5

The correct answer is: Add a zero.

Answer 6

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Answer 7

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