Let x be a constant. The 5th term of an arithmetic sequence is a = 4x – 3. The 9th term of the sequence is a, = 12x + 9 Find the first term of the sequence. Write your answer in simplest form.

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

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step-by-step explanation:

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image for option 4

step-by-step explanation:

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