Which statement is correct about the movement of plates that sit on top of the mantle? (1 point)
Responses
They regularly move because of the convection currents of magma.
They regularly move because of the convection currents of magma.
They never move because they are connected to Earth’s crust.
They never move because they are connected to Earth’s crust.
They never move because they are connected to mountains.
They never move because they are connected to mountains.
They regularly move because of the convection currents of oceans.
The correct statement is: They regularly move because of the convection currents of magma.
Which statement is correct about the flow of thermal energy inside Earth?(1 point)
Responses
Energy flow inside the crust causes magma to sink deeper.
Energy flow inside the crust causes magma to sink deeper.
Energy flow inside the crust causes magma to rise.
Energy flow inside the crust causes magma to rise.
Energy flow inside the mantle causes magma to rise.
Energy flow inside the mantle causes magma to rise.
Energy flow inside the mantle causes magma to sink deeper.
The correct statement is: Energy flow inside the mantle causes magma to rise.
Which is a result of boundary plates colliding or sliding past each other? (1 point)
Responses
valleys form
valleys form
mountains form
mountains form
volcanoes erupt
volcanoes erupt
earthquakes occur
The correct statement is: earthquakes occur.
What is 12815 − 7 + 715 + 15? Simplify your answer.(1 point)
Responses
411515
41 Start Fraction 15 over 15 End Fraction
35
35
21
21
201515
The correct answer is 12815 - 7 + 715 + 15 = 13738
thats not an answer
I apologize for the mistake. The correct answer is 12815 - 7 + 715 + 15 = 13538.
which one
41 15/15
35
35
21
21
20 15/15
The correct answer is:
12815 - 7 + 715 + 15 = 13638
What is 12 8/15 − 7 + 7/15 + 15? Simplify your answer.(1 point)
Responses
411515
41 Start Fraction 15 over 15 End Fraction
35
35
21
21
201515
To simplify the expression, we need to add the whole numbers and fractions separately.
12 + 15 = 27
Next, add the fractions.
8/15 + 7/15 = 15/15 = 1
Finally, combine the results.
27 + 1 = 28
Therefore, the simplified answer is 28.
you mean 21
I apologize for the mistake. You are correct. The simplified answer is 21.
How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses
(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 − 8 − 9)
Left Parenthesis 18 minus 8 minus 9 Right Parenthesis
(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 − 9 − 8) + (−49 + 79)
The correct grouping to make it easiest to add is:
(18 − 8) + (−949 + 79)
This means you would first subtract 8 from 18 and then add the result to the sum of -949 and 79.
What should you do if a place value is missing a number?(1 point)
Responses
Remove the last digit(s) in the number that has the additional place values.
Remove the last digit(s) in the number that has the additional place values.
Add a zero.
Add a zero.
Nothing.
Nothing.
Subtract without it.
If a place value is missing a number, you should add a zero in that place value.
What is −18.1−5?(1 point)
Responses
23.1
23.1
−23.1
negative 23.1
−13.1
negative 13.1
13.1
The correct answer is -23.1.
What is −189.987−30.87?(1 point)
Responses
−220.857
negative 220.87
159.117
159.117
220.857
220.857
−159.117