Answer: The simplest form of 35/40 is 7/8.
Pauline's average speed for this trip is 64 km/hr.
<em><u>Explanation</u></em>
First we will convert each 'minutes' into 'hours' . So......
40 minutes =
and 23 minutes = 
Now, 
So, the distance traveled for first 40 minutes at 88 km/hr speed
,
the distance traveled for next 40 minutes at 75 km/hr speed
and
the distance traveled last 23 minutes at 49 km/hr speed 
So, <u>the total distance traveled </u>
She spends 17 minutes eating lunch and buying gas.
So, <u>the total time taken for the trip</u> 
Thus, Pauline's average speed for this trip = (Total distance / Total time)
<em>(Rounded to the nearest km/hr)</em>
-2/3 is -.66 repeating so a line over the six's
Answer:
<h2>-38y -21z</h2>
Step-by-step explanation:
1). -(6y + 2z) - 7z- 4(3z + 8y) {Expand by distributing terms}
2). -(6y + 2z) - 7z - (12z + 32y) {Expand by distributing terms}
3). -6y + 2z - 7z - 12z + 32y {Remove parenthesis}
4). ( -6y - 32y ) + (-2z - 7z - 12z) {Collect like terms}
5). -38y -21z {Simplify}