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3 years ago

What is the value of a?

Mathematics

2 answers:

kaheart [24]3 years ago

7 0

Answer:

$a=\dfrac{16}{3}\ un.$

Step-by-step explanation:

In right triangle XZW, the height WY is the geometric mean of segments ZY and XY.

Hence,

$WY^2 =ZY\cdot XY,\\ \\4^2=3\cdot a,\\ \\a=\dfrac{16}{3}\ un.$

luda_lava [24]3 years ago

3 0

16/3 is the value of a

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2 years ago

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Answer:

Step-by-step explanation:

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2 years ago

What is the length of the tangent line in the picture?

S_A_V [24]

Answer:

x = -2

Step-by-step explanation:

The tangent line has length "x + 8"

The secant line has length "x + 6 + 5", where

5 is the inner part

x + 6 is the outer part

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the secant-tangent theorem tells us that square of the tangent line is equal to the outer segment of secant line multiplied by length of whole secant line.

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$(x+8)^2 = (x+6)(x+6+5)$

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