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elixir [45]
3 years ago
14

the combined land area of the countries A and B is 199,973 square kilometer. Country A is larger by 573 kilometer. determine the

land area of each country
Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0
Let the land area of country A = a
and the land area of country B = b

a + b = 199973
a = b + 573

(b + 573) + b = 199973
2b = 199400

b = 99700
a = 100273

The land area of country A is 100,273 square kilometers
and the land area of country B is 99,700 square kilometers.
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allochka39001 [22]

Answer:

the answer is 12

Step-by-step explanation:

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  2. kcf
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A company produces refrigerators for beer kegs. The refrigerators are supposed to maintain a mean temperature of 43°F, ideal for
Deffense [45]

Answer:

C) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

Options:

A) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually 43°F.

B) Reject the claim that the mean temperature is equal to 43°F when it is actually 43°F.

C) Fail to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

D) Reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

Explanation:

The null hypothesis H0: µ=43°F (a true mean temperature maintained by refrigerator is equal to 43°)

The alternative hypothesis Ha: µ<>43 (a true mean temperature maintained by refrigerator is not equal to 43).

A type II error does not reject null hypothesis H0 when it is false.  Therefore, the type II error for the test fails to reject the claim that the mean temperature is equal to 43°F when it is actually different from 43°F.

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B. Add/subtract the same quantity from both sides.

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