2^4 - 3² + 7(0.5)
2 x 2 x 2 x 2 = 16
16 - 3² + 7(0.5)
3 x 3 = 9
16 - 9 + 7(0.5)
7 x 0.5 = 3.5
16 - 9 + 3.5
16 - 9 = 7
7+ 3.5 = 10.5
So your answer is C) 10.5.
Hope this Helps!!
First of all, subtract the amount the boots costed from the total price.
109.95-29.99
= 79.96
Now you have the price of the 4 sandals.
To find the price of 1 pair, divide this total by 4
79.96 / 4
= 19.99 $ for one pair of sandals!
The solution of the quadratic equation x² - 2 · x = - 26 is x = 2 ± i √ 22.
<h3>How to solve a quadratic equation by completing the square</h3>
Completing the square is an algebra-based method used both to simplify and to solve analytically quadratic equations. In this problem we proceed to complete the square to solve the equation, whose procedure is shown in detail:
x² - 2 · x = - 26 Given
x² - 2 · x + 4 = - 22 Compatibility with addition / Definition of subtraction
(x - 2)² = - 22 a² + 2 · a · b + b² = (a + b)²
x - 2 = ± √(- 22) Definition of square root
x - 2 = ± i √ 22 Definition of complex number
x = 2 ± i √ 22 Compatibility with addition / Existence of the additive inverse / Modulative property / Result
The solution of the quadratic equation x² - 2 · x = - 26 is x = 2 ± i √ 22.
To learn more on quadratic equations: brainly.com/question/17177510
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You would use the law of cosines