If the total cost of all five meals was $51.94 which included a 6% sales tax, what was the cost of one meal before tax was added?

259.7

Step-by-step explanation:

hope this helps!

$9.80

Step-by-step explanation:

An easy way to work out the original cost is to do this:

The total cost of all meals is 100%.

If we know the percentage added on top of that is 6%, we know the total is now 106% of the original price.

To work out what the original price is, divide the current amount by 106.

This gives you $0.49, then divide that by 100.

This will give you $49, which is the original cost of the meals without the 6%.

If the meals are all priced the same, dividing $49 by 5 will give you $9.80.

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47