* Solve for x. (4 Points) (4x + 10% (3x - 5)º
2 answers:
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By knowing the <em>blood</em> pressure and applying the <em>quadratic</em> formula, the age of a man whose normal <em>blood</em> pressure is 129 mm Hg is 40 years old.
<h3>How to use quadratic equations to determine the age of a man in terms of blood pressure</h3>
In this problem we have a <em>quadratic</em> function that models the <em>blood</em> pressure as a function of age. As the latter is known, we must use the quadratic formula to determine the former:
129 = 0.006 · A² - 0.02 ·A + 120
0.006 · A² - 0.02 · A - 9 = 0
A = 1.667 + 38.733
A = 40
By knowing the <em>blood</em> pressure and applying the <em>quadratic</em> formula, the age of a man whose normal <em>blood</em> pressure is 129 mm Hg is 40 years old.
To learn more on quadratic equations: brainly.com/question/1863222
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Ruby needs a cup of powdered milk and six cups of whole wheat to prepare four batches of pancakes.
Given the <em>quantities</em> of powdered milk and whole wheat to prepare a batch of pancakes, we can determined the <em>total</em> amount of each ingredient by simple rule of three:
Powdered milk
Whole wheat
Ruby needs a cup of powdered milk and six cups of whole wheat to prepare four batches of pancakes.
To learn more on simple rule of three (cross multiplication), we kindly invite to check this verified question: brainly.com/question/8647106