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skelet666 [1.2K]

2 years ago

8

Linda planned to spend 9 hours practicing piano this week. By tuesday,she had spent 2 1/2 hours practising. How much longer does

she need to practice to reach her goal?

1 answer:

faust18 [17]2 years ago

5 0

Just subtract 9:00-2:30 so your answer should 6 hours and 30 minutes or 6 1/2 hours

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Whats 1-2x+3y for x=-2 and y=-5 ?

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Answer:

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Step-by-step explanation:

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2 years ago

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gulaghasi [49]

Answer:

Gọi AH là đường cao kẻ từ A đến BC

Xét tam giác AHC vuông tại H

Suy ra AH = HC. cotA= 9.cot35° = 12,9

Xét tam giác AHB vuông tại H

Suy ra BH = AH.tanA = 12,9.tan61°=23,37

Ta có BC= HC+ HB= 9+23,27 =32,27

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2 years ago

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Nina [5.8K]

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Step-by-step explanation:

The computation of mAC is shown below:

Given that

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hence, the correct option is third

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