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➷ 3x + 1 = 511
Subtract 1 from both sides:
3x = 510
Divide both sides by 3:
x = 170
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Answer:

Given:
- area = 18 cm²
- base = 6 cm
- height = (h + 1) cm
Substitute the given values into the equation and solve for h:



expand using distributive property of addition
:

subtract 3 from both sides:

divide both sides by 3:

<u>To verify</u>:
Half of the base is 3 cm.
If h=5, then the height of the triangle is 6 cm.
Multiplying 3 by 6 is 18.
This matches the given area, so we can verify that h = 5.
I think it’s can’t be determined because we need to know at least 2 angles of a train for.
Answer:
term 1 - term 2 = sequence
so
-17-(-15) = -2
and if you minus the rest by -2 it will give you the next term
-15-(-2) = -13
-13-(-2) = -11