4 is 101 and 1 and 3 are 129
Answer:
Answer = C
Angle x = 21
Property = Angle sum of Triangle
(1+1)(7-2)+(24/8)
1+1 is two
7-2 is five
24/8 is three
Two times five is ten
Ten plus three is thirteen
3.14(11)^2= 379.94
Not sure if you have to round or give an exact answer, but you can round that if you have to.
Answer:
B
Step-by-step explanation:
substitute the values from the replacement set into the left side of the equation to find which values of x make it true.
x = - 21
14 - 2(- 21) = 14 + 42 = 56 ≠ 28 ← False
x = - 7
14 - 2(- 7) = 14 + 14 = 28 ← True
x = 7
14 - 2(7) = 14 - 14 = 0 ≠ 28 ← False
Thus x = - 7 is the solution