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Semenov [28]
3 years ago
9

Can you please help me with Questions #18-22 on this Math Worksheet

Mathematics
1 answer:
CaHeK987 [17]3 years ago
3 0

21. 4x+4y
22. 16 girls
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Two trains leave a train station at the same time. One travels north at 12 miles per hour. The other train travels south at 9 mi
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4.2 hours

Step-by-step explanation:

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If one side of a rectangle is increased by 12 and an adjacent side is decreased by 3 a rectangle is formed whose perimeter is 64
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The length of the side of the original square is 7cm

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How can division be represented by using a fraction? Give a real world example
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Step-by-step explanation:

4/5 is the same as 4 divided by 5.


you had 4/5 of a cookie. How much percent did you have ?

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A princess is standing 38 feet from the base of a 217 foot tall tower. What is the angle of elevation from him to the ogre who h
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Answer:

Angle of elevation = 80°

Step-by-step explanation:

A princess is standing 38 feet from the base of a 217 foot tall tower. What is the angle of elevation from him to the ogre who has his princess held captive?

To solve for angle of elevation, we use the Trigonometric function of Tangent.

tan θ = Opposite side/Adjacent side

Opposite side = Height of the tower = 217 ft

Adjacent side = 38ft

tan θ = 217/38

tan θ = 5.6315789474

θ = arc tan 5.6315789474

= 79.930937301°

Approximately = 80°

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3 years ago
In triangle JKL, tan(b°) = three fourths and cos(b°) =four fifths. If triangle JKL is dilated by a scale factor of one half, wha
uysha [10]

The angle of sine has a value of 3/5.

Option A is the correct representation of angle sin(b°).

<h2>How do you calculate the angle b for sine?</h2>

Given that tan(b°) = 3/4 and cos(b°) = 4/5.

In trigonometry, we know that,

\dfrac {sin \theta}{cos \theta} = tan \theta

The angle of sine can be written as below.

sin \theta = cos \theta \times tan \theta

For the angle b, the above expression can be written as,

sin (b^\circ) = cos (b^\circ) \times tan (b^\circ)

Substituting the values in the above expression, we get,

sin (b^\circ) = \dfrac {3}{4} \times \dfrac {4}{5}

sin (b^\circ) = \dfrac {3}{5}

Hence we can conclude that the angle of sine has a value of 3/5.

To know more about the angle of sine, follow the link given below.

brainly.com/question/2512010.

8 0
3 years ago
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