DA 6 MATHEMATIS ays the
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Lesson 7: Practice Problems
10
apples
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1. A car travels 55 miles per hour for 2 hours, Complete the table,
time (hours)
distance (miles)
miles per hour
1
55
55
/
1
an buy
110
III

What is a rational number between 9.5 and 9.7

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?