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3 years ago

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What do a rectangle and a rhombus have in common? Select all that apply. The opposite sides are parallel. They have four right a

ngles. Their angle measures add to 360°. They have four congruent sides. you can pick more than one so plz pick more than one be positive

1 answer:

Over [174]3 years ago

5 0

1.the opposite sides are parallel

2.their angle measures add up to 360

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White raven [17]

A) y= x+1
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According to my calculations all the answers should be correct.

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3 years ago

2. picking a number from 1 to 5 and choosing<br> the color red, white, or blue

bekas [8.4K]

Answer:

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Step-by-step explanation:

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3 years ago

Forces of 9 lbs and 13 lbs act at a 38º angle to each other. Find the magnitude of the resultant force and the angle that the re

fiasKO [112]

Answer: $R=20.84\ lb\quad 22.57^{\circ},15.43^{\circ}$

Step-by-step explanation:

Given

Two forces of 9 and 13 lbs acts $38^{\circ}$ angle to each other

The resultant of the two forces is given by

$\Rightarrow R=\sqrt{a^2+b^2+2ab\cos \theta}$

Insert the values

$\Rightarrow R=\sqrt{9^2+13^2+2(9)(13)\cos 38^{\circ}}\\\Rightarrow R=\sqrt{81+169+184.394}\\\Rightarrow R=\sqrt{434.394}\\\Rightarrow R=20.84\ lb$

Resultant makes an angle of

$\Rightarrow \alpha=\tan^{-1}\left( \dfrac{b\sin \theta}{a+b\cos \theta}\right)\\\\\text{Considering 9 lb force along the x-axis}\\\\\Rightarrow \alpha =\tan^{-1}\left( \dfrac{13\sin 38^{\circ}}{9+13\cos 38^{\circ}}\right)\\\\\Rightarrow \alpha =\tan^{-1}(\dfrac{8}{19.244})\\\\\Rightarrow \alpha=22.57^{\circ}$

So, the resultant makes an angle of $22.57^{\circ}$ with 9 lb force

Angle made with 13 lb force is $38^{\circ}-22.57^{\circ}=15.43^{\circ}$

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1/2 and a fraction equivalent to 2/6

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Answer:1/2 if you multiply 2 to the top number then multiply 3 with the bottom

Step-by-step explanation:

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3 years ago

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Need help please. I need help with how to do these problems.

Vikki [24]

Look it up I will find it

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