Answer:
84
Step-by-step explanation:
sum of interior angles of a pentagon is 540. A triangle is 180, then for each side you add another 180, so a square would be 360 and a pentagon is 540
Sum up all given sides
131+108+107+110=456
subtract this number from 540
540-456=84
x degree= 84
1) 
2) 
Step-by-step explanation:
Solving the equations using quadratic formula.
1) 
The quadratic formula is:
where a =3, b = -1 and c= -6
Putting values:
2) 
The quadratic formula is:
where a =-5, b = 7 and c= 3
Putting values:
Keywords: Solving Using Quadratic Formula
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Answer:
17
Step-by-step explanation:
f(x) = x^2 + 8.
f(-3) = (-3) ^2 +8
= 9+8
= 17
Hopes this helps:
Answer: 221
Please mark as brainlist
To condition in which we can justify if the forces are pulling at right angles to each other is that the sum of the squares of the two lesser number should be equal to the square of the third number.
For the first set: 12 lb, 13lb, 19lb.
12^2 + 13^2 <span>≠ 19^2
For the second set: 15 lb, 36 lb, 39 lb
15^2 + 36^2 = 39^2
The first pair of forces do not pull at a right angle while the second do.
Thus, the answer is letter B. </span>
