Answer:
x=-16
Step-by-step explanation:
Subtract 4 from both sides
x+4-4=-12-4
x=-16
We can figure this out using the explicit formula.

n represents the term we are looking for.
f(1) represents the first term in the sequence, which in this case, is 7.
d represents the common difference, which in this case, is +3.
f(n) = 7 + 3(n - 1)
f(n) = 7 + 3n - 3
f(n) = 4 + 3n
Now, we can input 214 for n and solve.
f(214) = 4 + 3(214)
f(214) = 4 + 642
f(214) = 646
The 214th term in this sequence is 646.
Answer:
950 and 950
Step-by-step explanation:
Lets just get this done :
10 x 50 = 500
9 x 50 = 450
500 + 450 =
950
---
20 x 50 = 1000
1000 - 50 = 950
Hope this helps!
Answer:
A: 11,13, 290
B: 7,24,25
Step-by-step explanation:
A &B both form a right triangle not C