Cosine rule: a^2<span> = b^</span>2<span> + c^</span>2<span> - 2bc </span>cos<span> A
-> a^2 > b^2 + c^2 - 2bca
-> abc > (b^2 + c^2 - a^2) /2</span>
Answer:
(B)The GCF of the numbers(28 and 36) in each term in the expression is 4.
(C)The GCF of the variables(a and ab) in each term in the expression is a.
(E)The factored form of the expression is 4a(7+9b)
Step-by-step explanation:
Given the expression: 
If we write it as a product, we obtain:

We can see the following
- The GCF of the numbers(28 and 36) in each term in the expression is 4.
- The GCF of the variables(a and ab) in each term in the expression is a.
- The factored form of the expression is 4a(7+9b)
The correct options are B, C, and E.
Answer:
x=6/7 and y=18/7
Step-by-step explanation:
If y = 3x and 2x + 4y = 12,
then substitute the value of y with 3x
2x + 4(3x) = 12
2x+12x=12
14x=12
x=12/14=6/7
y=3x=3*(6/7)=18/7
190 miles
You just needed to find 19% of 1000
Answer: 19x is the first answer 5x - 24 is the second answer
Step-by-step explanation: