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2 years ago

Please help me ASAP

Mathematics

2 answers:

Sedaia [141]2 years ago

8 0

Answer:

18°

Step-by-step explanation:

The exterior angle of the polygon A is the difference of interior angles of pentagon and the square:

180(5 - 2)/5 - 180(4 - 2)/4 =
540/5 - 360/4 =
108 - 90 =
18

Talja [164]2 years ago

6 0

Answer:

135 degrees

Step-by-step explanation:

360 - 90 = 270

270 / 2 = 135 degrees

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The number of hydrogen atoms are 304

Solution:

Given that a water molecule is made up of three atoms

Number of atoms in water molecule = 3 atoms

1/3 of the atoms are oxygen and the remaining Adams are hydrogen

$Number\ of\ oxygen\ atoms = \frac{1}{3}\\\\Number\ of\ hydrogen\ atoms = 3 - \frac{1}{3} = \frac{8}{3}$

There are 114 water molecules

8/3 of water molecule is hydrogen

Therefore, number of hydrogen atoms is given as:

$Number\ of\ hydrogen\ atoms = \frac{8}{3} \times 114\\\\Number\ of\ hydrogen\ atoms = 8 \times 38\\\\Number\ of\ hydrogen\ atoms = 304$

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2 years ago

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3 years ago

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valina [46]

ANSWER

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

EXPLANATION

The standard equation of the hyperbola is

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We multiply through by 36 to obtain:

$9 {(y - 2)}^{2} - 4( {x - 2)}^{2} = 36$

We now expand to get,

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Expand :

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To get the general form, we equate everything to zero to get,

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2 years ago

Please help me ASAP ​

Please help me ASAP