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3 years ago

Is this relation a function?

Mathematics

1 answer:

mr_godi [17]3 years ago

5 0

Answer:

Yes, this is a function

Step-by-step explanation:

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What is the capital of the united states

Illusion [34]

Washington D.C is the capital of the US

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3 years ago

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The inequality statements compare the temperature of three different locations in a city at the same time.

marysya [2.9K]

Answer:

A. The temperature –5º C is colder than the temperature –2º C .
D. The temperature –5º C is warmer than the temperature –7º C

Step-by-step explanation:

The more negative a temperature is, the colder it is. In order, from colder to warmer, the temperatures are ...

colder ... ... ... ... warmer

-7 ºC ... -5 ºC ... -2 ºC

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3 years ago

(b) Find the angle between u and v to the nearest degree.

yulyashka [42]

Question 1 (b)

$u \cdot v=11\\\\|u|=\sqrt{3^{2}+(-1)^{2}}=\sqrt{10}\\\\|v|=\sqrt{4^{2}+1^{2}}=\sqrt{17}$

So,

$\cos \theta=\frac{11}{\sqrt{10}\sqrt{17}}\\\\\theta=\cos^{-1} \left(\frac{11}{\sqrt{10}\sqrt{17}} \right) \approx \boxed{32^{\circ}}$

Question 2 (b)

$u \cdot v=22\\\\|u|=\sqrt{5^{2}+2^{2}}=\sqrt{29}\\\\|v|=\sqrt{4^{2}+1^{2}}=\sqrt{17}$

So,

$\cos \theta=\frac{22}{\sqrt{29}\sqrt{17}}\\\\\theta=\cos^{-1} \left(\frac{22}{\sqrt{29}\sqrt{17}} \right) \approx \boxed{8^{\circ}}$

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2 years ago

Twice a number added to the product of 14 and 2 is 30. find the number

Molodets [167]

Answer: x = 1

Explanation:

Let x be the unknown number.

Thus:

2x + (14 • 2) = 30
2x + 28 = 30
2x = 30 - 28
2x = 2
x = 2/2
x = 1

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3 years ago

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Find the slope of a line that passes through each pair of points M(-2,3),N(7,-4)

yan [13]

-9/7

which would be -1 2/7, but slope is not done in mixed fractions.

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3 years ago