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garik1379 [7]
3 years ago
6

Please help me thanks

Mathematics
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

you have it correct, permutation

Step-by-step explanation:

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Answer:

Danny does

Step-by-step explanation: 40 / 4 = 10

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10 is less than 17 meaning that Danny is offering a better deal.

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Altitudes AA1 and BB1 are drawn in acute △ABC. Prove that A1C·BC=B1C·AC
Sophie [7]

Answer:

See the attached figure which represents the problem.

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△BB₁C is a right triangle at B₁

So, Cos x = adjacent/hypotenuse = B₁C/BC ⇒(2)

From (1) and  (2)

∴  A₁C/AC = B₁C/BC

using scissors method

∴ A₁C · BC = B₁C · AC

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If M={a,b,c,d} and N={c,b,e,f},find the value of M-N​
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Step-by-step explanation:

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