I need to know what d=

d = 30

Step-by-step explanation:

All angles in a triangle must add up to 180° so:

35 + 55 + 3d = 180

Step 1 - Simplify:

90 + 3d = 180

Step 2 - Subtract 90 from both sides:

90 + 3d - 90 = 180 - 90

3d = 90

Step 3 - Divide both sides by 3:

Hope this helps!

Step-by-step explanation:

Sum of the interior angles in a triangle is added up to 180°

There fore,

So,

Hope this helps you

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step-by-step explanation:

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation: