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nordsb [41]
3 years ago
7

A pair of shoes costs $29.99 and the state sales tax is 5%. Use the formula C = p + rp to find the total cost of the shoes, wher

e C is the total cost, p is the price, and r is the sales tax rate.
Mathematics
1 answer:
Lemur [1.5K]3 years ago
6 0
29.99 + .05 × 29.99 = 31.49
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lora16 [44]
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stiv31 [10]
Since it's a right triangle you can use the Pythagorean theorem or Trig (Soh Cah Toa).

I'll just use the Pythagorean theorem : a² + b² = c²
a = 9
b = x
c = 18

9² + x² = 18²
81 + x² = 324
x² = 324 - 81
x² = 243
x = √(243)

factor 243 to find a perfect square

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Answer:

Step-by-step explanation:

Remember the entire circle has 360 degree. You have everything you need to find angle b.

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