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8th Grade Math - Ch 8 and PT ER Test

Last updated almost 5 years ago

6 questions

1

Question 1

1.

You send an email to 8 friends. Then, they each forwarded the email to 8 friends and those friends each forwarded the email to 8 more friends. Write an expression to represent the chain of emails. How many people were sent your original email?

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1

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1

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Question 2

2.

Your friend simplifies the expression. If your friend correct? Explain your reasoning.

Question 3

3.

The budge to remake a movie is 100 times the budget of the original movie. The original movie’s budget was 10^5 dollars. What is the budget of the remake? Express your answer as a power.

Question 4

4.

The mass of a small particle of sand is about 0.023 gram. The mass of a small particle of dust is about 2 X 10^3 grams. Approximately how many times larger is the sand particle than the dust particle? Write your answer is scientific notation.

Question 5

5.

Can a right triangle have a leg that is 10 meters long and a hypotenuse that is 10 meters long? Explain.

Question 6

6.

Tell whether the points form a right triangle. Justify your reasoning.
(2, 6), (5, -1), and (2, -4)