Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 14
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Last updated about 3 years ago
10 Questions
1 point
1
Question 1
1.
Evaluate each expression. Use scientific notation to express your answer.
(1.5⋅10^{2})(5⋅10^{10})
Evaluate each expression. Use scientific notation to express your answer.
(1.5⋅10^{2})(5⋅10^{10})
1 point
1
Question 2
2.
Evaluate each expression. Use scientific notation to express your answer.
\frac{4.8⋅10^{-8}}{3⋅10^{-8}}
Evaluate each expression. Use scientific notation to express your answer.
\frac{4.8⋅10^{-8}}{3⋅10^{-8}}
1 point
1
Question 3
3.
Evaluate each expression. Use scientific notation to express your answer.
(5⋅10^{8})(4⋅10^{3})
Evaluate each expression. Use scientific notation to express your answer.
(5⋅10^{8})(4⋅10^{3})
1 point
1
Question 4
4.
Evaluate each expression. Use scientific notation to express your answer.
(7.2⋅10^{3})\div(1.2⋅10^{5})
Evaluate each expression. Use scientific notation to express your answer.
(7.2⋅10^{3})\div(1.2⋅10^{5})
1 point
1
Question 5
5.
How many bucketloads would it take to bucket out the world’s oceans? Write your answer in scientific notation.Some useful information:- The world’s oceans hold roughly 1.4⋅10^{9} cubic kilometers of water.
- A typical bucket holds roughly 20,000 cubic centimeters of water.
- There are 10^{15} cubic centimeters in a cubic kilometer.
How many bucketloads would it take to bucket out the world’s oceans? Write your answer in scientific notation.
Some useful information:
- The world’s oceans hold roughly 1.4⋅10^{9} cubic kilometers of water.
- A typical bucket holds roughly 20,000 cubic centimeters of water.
- There are 10^{15} cubic centimeters in a cubic kilometer.
1 point
1
Question 6
6.
The graph represents the closing price per share of stock for a company each day for 28 days.
What variable is represented on the horizontal axis?
The graph represents the closing price per share of stock for a company each day for 28 days.
What variable is represented on the horizontal axis?
1 point
1
Question 7
7.
The graph represents the closing price per share of stock for a company each day for 28 days.
In the first week, was the stock price generally increasing or decreasing?
The graph represents the closing price per share of stock for a company each day for 28 days.
In the first week, was the stock price generally increasing or decreasing?
1 point
1
Question 8
8.
The graph represents the closing price per share of stock for a company each day for 28 days.
During which period did the closing price of the stock decrease for at least 3 days in a row?
The graph represents the closing price per share of stock for a company each day for 28 days.
During which period did the closing price of the stock decrease for at least 3 days in a row?
1 point
1
Question 9
9.
Write an equation for the line that passes through (-8.5,11) and (5,-2.5).
Write an equation for the line that passes through (-8.5,11) and (5,-2.5).
1 point
1
Question 10
10.
Explain why triangle ABC is similar to triangle CFE.
Explain why triangle ABC is similar to triangle CFE.
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