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adelina 88 [10]
3 years ago
12

What is the value of x ?

Mathematics
1 answer:
Ivan3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

Given two secants drawn from an external point to the circle, then

The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is

x(x + 21) = (x + 1)(x + 1 + 14)

x² + 21x = (x + 1)(x + 15) ← expand using FOIL

x² + 21x = x² + 16x + 15 ( subtract x² + 16x from both sides )

5x = 15 ( divide both sides by 5 )

x = 3

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Answer: triangle sum , x= 9

Step-by-step explanation:

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2 years ago
To describe a specific arithmetic sequence, Elijah wrote the recursive formula:
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Answer:

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Step-by-step explanation:

Given the arithmetic sequence in recursive formula.

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Again, putting n = 1 in equation (1) we get f(2) = f(1) + 7 = 37 + 7 = 44

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Therefore, the arithmetic sequence is 30, 37, 44, 51, .......

Therefore, the linear equation of this sequence is given by t_{n}  = 30 + 7n, where, n = 0, 1, 2, 3, 4, .........

(Answer)

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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