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Korolek [52]
2 years ago
12

Can someone help me with this ?

Mathematics
1 answer:
Damm [24]2 years ago
4 0

Answer:

that is a great question i dont know.

explanation: the human brain is in different categories.

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Given: △ACM, m∠C=90°, CP ⊥ AM . AC:CM=3:4, MP-AP=1. Find AM.
lana [24]

Answer:

AM=\frac{25}{7}

Step-by-step explanation:

It is given that AC:CM = 3:4.

Therefore, let AC = 3k and CM = 4k

It is given that Δ ACM is right angled.

Therefore,

AM^{2} =AC^{2} +CM^{2}

=(3k)^{2} +(4k)^{2}

=9k^{2} +16k^{2}

=25k^{2}

AM = 5k

But, AM = MP + AP

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It is given that MP - AP = 1 --- (2)

Multiply (1) and (2), we get.

(MP + AP)(MP - AP) = 5k × 1 = 5k

MP^{2} -AP^{2} =5k

Add and subtract CP^{2} on the left side.

MP^{2} + CP^{2} - CP^{2} -AP^{2} =5k

(MP^{2} + CP^{2}) - (CP^{2} +AP^{2}) =5k --- (3)

But, since CP ⊥ AM, Δ CMP and Δ CAP are right triangles. Therefore,

MP^{2} +CP^{2} =CM^{2} and

CP^{2} +AP^{2} =AC^{2}

Now, (3) becomes,

CM^{2} -AC^{2} =5k

(4k)^{2} -(3k)^{2} =5k

7k^{2} =5k

7k = 5 or

k=\frac{5}{7}

AM = 5k

=5(\frac{5}{7} )

=\frac{25}{7}


6 0
3 years ago
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