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Llana [10]
3 years ago
8

Samuel orders DVD’s from an online music store. Each DVD costs $9.99. He has a 20% discount code, and sales tax is 6.75%. What i

s the total cost of his order?
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
Hey You!

Let's solve this step-by-step:

9.99 * 20% = 1.998

9.99 - 1.998 = 7.992

7.992 * 6.75% = 0.53946

7.992 + 0.53946 = 8.53746

The total cost of his order is $8.53
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Answer:

Area of triangle RST = 95 in² (Approx)

Step-by-step explanation:

Given:

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Side c = Perimeter - Side a - Side b

Side c = 50 - 22 - 13

Side c = 15 in

Heron's formula:

s = Perimeter / 2 = 50 / 2

s = 25 in

Area of triangle = √s(s-a)(s-b)(s-c)

Area of triangle = √25(25-22)(25-12)(25-15)

Area of triangle = √25(3)(13)(10)

Area of triangle = 5√390

Area of triangle = 5 × 19(approx)

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