Answer:
About 49.09 miles a day .
Step-by-step explanation:
-3(b - 7)
Distributive property
-3*b = -3b
-3*7 = -21
-3b + 21
Answer: -3b + 21
1. Factor the expression 

2. Since
is placed in the denominator of the given expression, then 
3. Now the expression can be simplified:

Answer:
7 + 4
Step-by-step explanation:
note that
×
= a
Given
(2 +
)² = (2 +
)(2 +
)
Each term in the second factor is multiplied by each term in the first factor, that is
2(2 +
) +
(2 +
) ← distribute both parenthesis
= 4 + 2
+ 2
+ 3 ← collect like terms
= 7 + 4
Answer:
x is 75° ........................