All of them have the same answer of -8 except the last one.
Area of a triangle is equal to 1/2 b(h) so since you already have the height and base, all you need to do is input it back into the equation:

(10)(13)
Multiply 10 & 13 to equal

(130)
Then take half of 130 to get
A = 65
Answer:
D
Step-by-step explanation:
5 - Sqrt 11 + 5 = 1
5 - Sqrt 16 = 1
5 - 4 = 1
Answer: 7?
Step-by-step explanation:
Answer:
your answer would be 4/12 because there are 4 red marbles and 12 marbles total
Step-by-step explanation: