Problems 7-8: There are 90 sixth graders and 75 seventh graders in a school chorus. The music director wants to make groups of performers, with the same combination of sixth graders and seventh graders in each group. She wants to form as many groups as possible.

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(1) \( -3 x+20=-10 \quad \) (2) \( \frac{25}{25}+10 x \neq-53 \)

Question 8 What type of quadrilateral has two pairs of equal sides and four right angles? OTrapezium O Kite Rhombus Rectangle

QUESTION 7 Consider the diagram below. Note that the diagram is not drawn to scale. Answer the questions that follow.

Random Phenomenon: The amount of paint required to paint a wall depends largely on the material of the wall. Usually, one liter of paint is enough to cover 15 to 16 square meters of polished wooden wall. Measure the area of a wooden wall that you can paint with one liter of paint. Step 2 of 3 : What is the maximum value of the random variable \( X \) ? Input 'NoMax' If the maximum does not exist.