Answer:
Right Triangle
Step-by-step explanation:
15² + 20² = 225 + 400 = 625 = 25²
Step-by-step explanation:
Communicative property states that, in addition, integers added in any order will still give the same answer.
So in this question,
rather than first adding 8 + (-5), we add 8 + (-8)
We know that a number + its additive Inverse (opposite sign) is equal to zero
And we know any number added to zero is equal to the number.
So we can quickly find out that the sum is -5
In this question, you are given Beth velocity(8mph) and Brandon velocity(12mph). To answer this question, you will need to find the initial distance of Beth and Brandon. The calculation would be:
Initial distance= Beth velocity * duration= 8 mph * 15 minutes * hour/60 minutes= 2miles
After that, the calculation would be:
beth_velocity * time + initial distance = brandon_velocity * time
8mph * time + 2 miles= 12 mph* time
4mph * time = 2 miles
time= 2 miles / 4 mph= 1/2 hour = 30 minutes
