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Degger [83]
3 years ago
8

A local Charity receives 1/3 of funds raised during a craft fair and bake sale. The total amount given to the charity was $137.4

5. How much did the bake sale raise
Mathematics
1 answer:
Fed [463]3 years ago
6 0

Answer:

The bake sale raised $412.35

Step-by-step explanation:

* Lets explain how to solve the problem

- A local Charity receives 1/3 of funds raised during a craft fair and

 bake sale

∴ The total amount given to the charity = 1/3 × the funds raised during

  a craft fair and bake sale

- The total amount given to the charity was $137.45

∴ The 1/3 of of funds raised during a craft fair and bake sale is $137.45

- Lets substitute the The total amount given to the charity in the

 equation above to find the funds raised during the bake sale

∴ 137.45 = 1/3 × the funds raised during the bake sale

- Multiply the both sides by 3

∴ 3 × 137.45 = the funds raised during the bake sale

∴ The funds raised during the bake sale = 412.35

* The bake sale raised $412.35

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7 times 4 equals 28 and 5 times 4 equals 20 so the answer is 20

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What are the magnitude and direction of u+v+w ?
nevsk [136]

The magnitude and the direction of the resultant are approximately 57.871 and 198.676°.

<h3>How to determine the magnitude and the direction of a resultant</h3>

Vectors are elements with two given characteristics: Magnitude and direction. A resultant is derived from the sum of vectors, the magnitude is the norm of a vector and the direction is the orientation of a vector. The resultant and its characteristics are described below:

<h3>Resultant</h3>

\vec r = \left(\sum\limits_{i=1}^{n}x_{i}, \sum\limits_{i=1}^{n}y_{i}\right)     (1)

<h3>Magnitude</h3>

\|\vec r\| = \sqrt{\left(\sum\limits_{i=1}^{n} x_{i}\right)^{2}+\left(\sum\limits_{i=1}^{n} y_{i}\right)^{2}}   (2)

<h3>Direction</h3>

\theta = \tan^{-1}\frac{\sum\limits_{i=1}^{n}y_{i}}{\sum\limits_{i=1}^{n}x_{i}}   (3)

Where \theta is resultant angle, measured in degrees.

If we know that \|\vec u\| = 90, \theta_{u} = 40^{\circ}, \|\vec v\| = 60, \theta_{v} = 20^{\circ}, \|\vec w\| = 40 and \theta_{w} = 30^{\circ}, then the resultant, its magnitude and its direction:

<h3>Resultant</h3>

\vec r = (-90\cdot \cos 40^{\circ}-60\cdot \sin 20^{\circ}+40\cdot \cos 30^{\circ}, 40\cdot \sin 30^{\circ}+60\cdot \cos 20^{\circ}-90\cdot \sin 40^{\circ})

\vec r = (-54.824, 18.531)

<h3>Magnitude</h3>

\|\vec r\| = \sqrt{(-54.824)^{2}+18.531^{2}}

\|\vec r\| \approx 57.871

<h3>Direction</h3>

\theta = \tan^{-1} \left(\frac{18.531}{-54.824}\right)

\theta \approx 198.676^{\circ}

The magnitude and the direction of the resultant are approximately 57.871 and 198.676°. \blacksquare

To learn more on vectors, we kindly invite to check this verified question: brainly.com/question/13322477

3 0
1 year ago
Find the equation of the straight line parallel to 2y=3x-7 and passing though the point (0.5,-1)
scZoUnD [109]
<span>2y=3x-7 
y = 3/2x - 7/2
y = 1.5x - 3.5 so slope = 1.5
</span><span>line parallel so it has same slope = 1.5
</span>
y +1 = 1.5(x - 0.5)
y + 1 = 1.5x - 0.75
y = 1.5x  - 1.75

answer: equation y = 1.5x  - 1.75
8 0
2 years ago
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