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Answer: A) 52 square inches</h3>
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Explanation:
a = 8, b = 13, and c = 15 are the sides of the triangle
s = (a+b+c)/2 = (8+13+15)/2 = 18 is the semi-perimeter, aka half the perimeter.
Those values are then plugged into Heron's Formula below

The triangular plaque has an area of approximately 52 square inches.
Answer:
part a
The probability of getting a 2 is 1/6 and the probability of getting a head is 1/2. The probability of getting both is thus 1/6 x 1/2= 1/12
part b
The probability of getting an even number is 3/6 = 1/2. The probability of getting a tail is 1/2. The probability of getting both is thus 1/2 x 1/2= 1/4.
Answer:
D. 25
Step-by-step explanation:
To find the new value of c when completing the square, use the formula
.
Plugging in the given values:

(5)²
= 25
hope this helps!
Answer:
Addition Property of Equality
Step-by-step explanation:
The addition property of equality says that;

is equivalent to

The given equation is 
We can observe that, 6 was added to both sides of
to obtain
.
Therefore the property use here is the addition property of equality.