Let a = 5 cm, b = 12 cm, and c
= ? Using Pythagorean theorem

c is 13.

Step-by-step explanation:

What we know:

Side a is 5 cm long.

Side b is 12 cm long.

What we need to know: What is c?

What do we do?:

a² + b² = c²

Substitute a and b for 5 and 12.

5² + 12² = c²

Find the squares of 5 and 12, which are 25 and 144.

25 + 144 = c²

Add 25 and 144 to get 169.

169 = c²

Find the square root of 169, to get c. That would be 13.

√169 = c

13 = c

Thus, side c is 13 cm long.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

step-by-step explanation:

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