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Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 12
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Last updated 11 months ago
5 questions
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Question 1
1.
Which is larger: the number of meters across the Milky Way, or the number of cells in all humans?
Some useful information:
The Milky Way is about 100,000 light years across.
There are about 37 trillion cells in a human body.
One light year is about 10^6 meters.
The world population is about 7 billion.
There are more meters across the Milky Way.
There are more cells in all humans.
Question 2
2.
Ecologists measure the body length and wingspan of 127 butterfly specimens caught in a single field.
Draw a line that you think is a good fit for the data.
(Show Your Work)
Write an equation for the line.
(Short Answer)
visibility
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Question 3
3.
Ecologists measure the body length and wingspan of 127 butterfly specimens caught in a single field.
What does the slope of the line tell you about the wingspans and lengths of these butterflies?
(Short Answer)
Question 4
4.
Diego was solving an equation, but when he checked his answer, he saw his solution was incorrect. He knows he made a mistake, but he can’t find it.
Where is Diego’s mistake and what is the solution to the equation?
Question 5
5.
The two triangles are similar. Find
x
.
"Source: Open Up Resouces (Download for free at openupresources.org.)"