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Open Up - Grade 7 - Mathematics - Unit 7 - Lesson 11

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

Pitanje 1
1.

A cube is cut into two pieces by a single slice that passes through points A, B, and C.

What shape is the cross section?

Pitanje 2
2.

Describe how to slice the three-dimensional figure to result in each cross section.

Pitanje 3
3.

Here are two three-dimensional figures.

Describe a way to slice one of the figures so that the cross section is a rectangle.

Pitanje 4
4.

Each row contains the degree measures of two supplementary angles.

Complete the table.

Pitanje 5
5.

Two months ago, the price, in dollars, of a cell phone was c.

Last month, the price of the phone increased by 10%. Write an expression for the price of the phone last month.

Pitanje 6
6.

Two months ago, the price, in dollars, of a cell phone was c.

This month, the price of the phone decreased by 10%. Write an expression for the price of the phone this month.

Pitanje 7
7.

Two months ago, the price, in dollars, of a cell phone was c.

Is the price of the phone this month the same as it was two months ago? (From question 5 and 6.)