A. given
b. distributive property (a(b+c)=ab+ac)
c. addition or commutative property (a+b=b+a)
d. subtraction property of equality (if a=b, then a-c=b-c)
e. division property of equality (if a=b, then a/c=b/c)
f. equality property (if a=b, then b=a)
Answer:
x ≈ 7.1
Step-by-step explanation:
Using the cosine ratio in the right triangle.
cos27° = 
= 
= 
( multiply both sides by x )
x × cos27° = 6.3 ( divide both sides by cos27° )
x = 
≈ 7.1 ( to the nearest tenth )
Answer:
5000 meters
Step-by-step explanation:
1 km = 1000 m
5 km = 1000 × 5 = 5000 meters
Therefore there are 5000 meters in a 5 km race.
Answer:
2x - 30
Step-by-step explanation:
You have to subtract 3x + 18 from 5x - 12:
=> 5x - 12 - ( 3x + 18) = 5x - 12 - 3x - 18 = 5x - 3x - 12 - 18 = 2x - 30
The first step was to apply distributive properties to get rid of the parenthesis, after that the terms were arranged and the like terms combined
Answer = 2x - 30
