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Simora [160]
4 years ago
10

for a different pizza dough recipe, the equation f=2.5w represents the number of cups of flour, f, that you need for w cups of w

ater. what is the constant of proportionality? explain what it means in this context.
Mathematics
1 answer:
zhuklara [117]4 years ago
4 0
For any direct variation, the equation is of the form y = kx, where k is the constant of proportionality.

Given the equation: f = 2.5w

The constant of proportionality is 2.5.

This means that the ration of the cups of flour to the cups of water used in the recipe is 2.5
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Solve x2 – 8x = 3 by completing the square. which is the solution set of the equation
attashe74 [19]
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7 0
3 years ago
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If a car can travel 50 miles in 55 minutes how long will it take to travel 75 minutes
jekas [21]
This is a cross multiplication, proportion problem. 50 miles in 55 minutes is to x miles in 75 minutes.

50/55= x/75
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7 0
3 years ago
PLZZ HELPP ASAP ON THIS
umka21 [38]

Answer:

a. x = 4    b. x = 7

Step-by-step explanation:

a. They are both congruent right angles because of the alternate exterior angles theorem

90-4 = 86

86/21 = 4

b. The angles are congruent because of the corresponding angles postulate

75+2 = 77

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5 0
3 years ago
Susan makes bracelets from glass beads sells them online.
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All you need to do is count the x's above each number.
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3. 3 bracelets
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5. 5 more bracelets
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3 0
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Find the exact value
Mnenie [13.5K]

By using properties for <em>trigonometric</em> functions and <em>trigonometric</em> expressions, we find that the <em>exact</em> value of the sine of the angle 5π/12 radians is \frac{\sqrt{2+\sqrt{3}}}{2}.

<h3>How to find the exact value of a trigonometric expression</h3>

<em>Trigonometric</em> functions are <em>trascendent</em> functions, these are, that cannot be described algebraically. Herein we must utilize <em>trigonometric</em> formulae to calculate the <em>exact</em> value of a <em>trigonometric</em> function:

\sin \frac{5\pi}{12} = \sqrt{\frac{1 - \cos \frac{5\pi}{6} }{2} }

\sin \frac{5\pi}{12} = \sqrt{\frac{1 + \cos \frac{\pi}{6} }{2} }

\sin \frac{5\pi}{12} = \sqrt{\frac{1 + \frac{\sqrt{3}}{2} }{2} }

\sin \frac{5\pi}{12} =  \sqrt{\frac{2+\sqrt{3}}{4} }

\sin \frac{5\pi}{12} = \frac{\sqrt{2+\sqrt{3}}}{2}

By using properties for <em>trigonometric</em> functions and <em>trigonometric</em> expressions, we find that the <em>exact</em> value of the sine of the angle 5π/12 radians is \frac{\sqrt{2+\sqrt{3}}}{2}.

To learn more on trigonometric functions: brainly.com/question/15706158

#SPJ1

7 0
2 years ago
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