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Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 14

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Last updated 11 months ago
10 questions
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Question 1
1.

Evaluate each expression. Use scientific notation to express your answer.

(1.5⋅10^{2})(5⋅10^{10})

Question 2
2.

Evaluate each expression. Use scientific notation to express your answer.

\frac{4.8⋅10^{-8}}{3⋅10^{-8}}

Question 3
3.

Evaluate each expression. Use scientific notation to express your answer.

(5⋅10^{8})(4⋅10^{3})

Question 4
4.

Evaluate each expression. Use scientific notation to express your answer.

(7.2⋅10^{3})\div(1.2⋅10^{5})

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.

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?

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?

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?

Question 9
9.

Write an equation for the line that passes through (-8.5,11) and (5,-2.5).

Question 10
10.

Explain why triangle ABC is similar to triangle CFE.

"Source: Open Up Resouces (Download for free at openupresources.org.)"