Answer:
see the explanation
Step-by-step explanation:
we have

we have that

Convert to scientific notation

substitute

Remember that
To multiply two numbers in scientific notation, multiply their coefficients and add their exponents

Round the number 4.0875 two decimal places
so

She will solve 20 problems in 2.5 hours, 4*5 thirty minute sessions=20.
Answer:
1. Tectonic activity is responsible for some of Earth's most dramatic geologic events: earthquakes, volcanoes and deep ocean trenches can all be formed by tectonic activity in the lithosphere.
2.The lithosphere can affect the atmosphere when tectonic plates move and cause an eruption, where magma below spews up as lava above. This can also release copious amounts of volcanic ash or soot, which pollutes the atmosphere, blocks radiation and creates a cooling effect.
3. I don't know what's show on the text sorry that parts up to you good luck :)
Step-by-step explanation:
Volume for rectangular prism is l x w x h
12cm x 6.5cm x 1.25cm = 97.5cm^3
You would start out with multiplying giving you 5(x+6). then you would have a product of 5x+30. hoped this helped!