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shutvik [7]
3 years ago
12

Homes on the open prairies in the West were built of:

Geography
1 answer:
olasank [31]3 years ago
6 0
They were built out of sod, cut from the ground because wood was too expensive and hard to carry out in the less wooded areas of the prairies
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In \triangle EFG,△EFG, \overline{GE}\cong \overline{FG} GE ≅ FG and \text{m}\angle F = 55^{\circ}.M∠F=55 Find \text{m}\angle E.M
lidiya [134]

Answer: \text{m}\angle E=55^{\circ}.

Explanation:

We are given that,

In △EFG,

\overline{GE}\cong \overline{FG}

\text{m}\angle F = 55^{\circ}

To find: \text{m}\angle E

As we know that, angles opposite to the congruent sides of a triangle are congruent.

Thus, In △EFG

if \overline{GE}\cong \overline{FG} and \text{m}\angle F = 55^{\circ}

then it implies \text{m}\angle F =\text{m}\angle E= 55^{\circ}

Hence, we get \text{m}\angle E=55^{\circ}.

7 0
3 years ago
Imagine that you are a doctor who is studying the spread of disease in your country. How could you use new technologies in geogr
serious [3.7K]

Answer: You could use old documents to help you make new medicine.

Explanation:

4 0
3 years ago
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Which of the following statements about Europe’s most Important industries is false
omeli [17]
Most Europeans are employed in the mining industry.<span>
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3 0
3 years ago
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Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

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What sea separates Japan from north and South Korea
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Japanese archipelago or the Japan Sea

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