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lana [24]
4 years ago
13

Please answer this question​

Mathematics
1 answer:
alisha [4.7K]4 years ago
7 0

Answer:

36.

Step-by-step explanation:

sec^2 (π/9) = 1 / cos^2 (π/9) = 1.13247

sec^2 (2π/9) = 1 / cos^2 (2π/9) = 1.70409

sec^2 (4π/9) = 1 / cos^2 (4π/9) = 33.1634

Adding these gives us  36 to the nearest whole number

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Read 2 more answers
Four friends go out to eat and their meal costs $86.50. The sales tax is 6.75% and they tip the waiter 20%. How much should each
Stolb23 [73]

Answer:

$27.41

Step-by-step explanation:

Meal Cost = $86.50

Sales Tax= 6.75% of the Meal Cost

= 6.75% X 86.50

= 0.0675 X 86.50

=$5.84

They tipped the Waiter 20%

20% of 86.50

=0.2 X 86.50

=$17.30

Total Bill= Meal Cost + Sales Tax + Tip

= 86.50 +5.84 + 17.30

=$109.64

Since the friends are four, each one will be expected to pay:

$109.64/4

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Each of the friends should pay $27.41 to the nearest cent.

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