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Colt1911 [192]
2 years ago
15

Find the value of x. 7, 8, and 9 please!

Mathematics
1 answer:
natima [27]2 years ago
6 0

Answer:

7) x= 5, 8) x= 6, 9) x= 7

Step-by-step explanation:

As per the secant theoram, if two secant intersect outside the circle then the product of the exterior secant and total length of each secant are equal.

7) ∴ (x+3)\times 3= (10+2)\times 2

opening parethesis and distributing 3 with x and 3.

⇒ 3x+9=24

subtracting 9 on both side.

⇒ 3x=15

cross multiplying

∴ x= 5.

8) (3+5)\times 5= (x+4)\times 4

Opening parethesis and distributing 4 with x and 4.

⇒ 8\times 5=4x+16

⇒ 40=4x+16

subtracting 16 on both side.

⇒ 24=4x

cross multiplying

∴ x= 6.

9) (x+5)\times 5= (6+4)\times 6

opening parethesis and distributing 5 with x and 5.

⇒ 5x+25=60

subtracting 25 on both side.

⇒ 3x=35

cross multiplying

∴ x= 7.

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Step-by-step explanation:

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3 0
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