Answer:
-1
Step-by-step explanation:
2−1+ (22−(−1)²) / (1−(2)(−1))
+2(2−(−1)) / (2)(−1)
22−(−1)2 / 1−(2)(−1)
+2(2−(−1)) / (2)(−1)
= -1
Associative Distributive Transitive Commutative
Answer:
NM corresponds with DC, and the scale factor is 3
Given:
The general equation is
m is a slope and c is the y-intercept.
From equation (1),
From equation (2)
From equation (1) and (2)
Substitute equation (2) in (1)
Substitute in (2)
Answer: The answers are
Step-by-step explanation: Given in the question that Lana completed a 10-mile race in 90 minutes by running and walking both. She usually runs at a pace of 8.5 minutes per mile and walks at a pace of 12 minutes per mile. We need to find the number of minutes for which she ran and walk throughout the race.
Let, Lana runs for 'x' miles and walks for 'y' miles. Then, we have
Multiplying the first equation by 8.5 and subtracting from the second equation, we have
Therefore,
Thus, time for which Lana ran is
And, the time for which Lana walks is
Thus, the answers are