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ryzh [129]
3 years ago
9

How are igneous rocks classified?

Chemistry
2 answers:
ivolga24 [154]3 years ago
5 0
I think it would be answer 1.
ziro4ka [17]3 years ago
3 0
Pretty sure the answer is 1
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Which of the following statements are part of the kinetic molecular theory ?
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2 years ago
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Given that oxygen-16 and oxygen-18 both have an atomic number of 8, how many electrons, protons, and neutrons do these oxygen at
Mamont248 [21]
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8 0
3 years ago
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A wheelchair ramp needs to be pitched at 8 degrees. If the ramp is to access an 18-inch step to a door what will be the length o
Thepotemich [5.8K]

Answer : The length of the ramp to the nearest inch will be, 129.49

Step by step explanation :

As we know that,

\sin \theta =\frac{Perpendicular}{Hypotaneous}

In the given image, the value of \theta(the angle between the base and the hypotaneous) is 8^o and the value of perpendicular is 18 inch.

Now we have to calculate the value of the hypotaneous by using above expression, we get

\sin \theta =\frac{Perpendicular}{Hypotaneous}

\sin 8^o=\frac{18inch}{Hypotaneous}

0.139=\frac{18inch}{Hypotaneous}

Hypotaneous=\frac{18inch}{0.139}

Hypotaneous=129.49inch

The hypotaneous is equal to the length of the ramp = 129.49 inch

Therefore, the length of the ramp to the nearest inch will be, 129.49

5 0
3 years ago
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