Answer: First option.
Step-by-step explanation:
You need to remember that to factorize the given expression 
, you need to choose two numbers that when you add them you get "10" and when you multiply them you get "21".
These number are:
7 and 3
Because:
Therefore, you get that the factorization of the expression is the following:
You can observe that this factorization matches with the first option.
You would set them equal to each other X= 13
Tooo be real I don’t know if
Answer:
a3
Step-by-step explanation:
Actually to find out the area of the given triangle we don't need to know the measurements of y nor z. Base length x and height h are enough as the formula for triangle's area is 1/2xh.
A = 1/2 * x * h
A = 1/2 * 15 * 6
A = 15 * 3
A = 45
Answer: Area of the given triangle is <u>45 square inches</u> (answer B).
