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3 years ago

5

Х у 20 14 1 3 5 2 5 10 Is this relation a function?.

1 answer:

dsp733 years ago

7 0

Answer:

No it is not a relation function if im correct there are two 5 x values so

Step-by-step explanation:

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Sina=3/5 find cos2a

yarga [219]

Answer:

$\huge \purple{\therefore \cos2a} \orange{= }\red{\frac{7}{25} }$

Step-by-step explanation:

$\because \cos2a =1 - 2 { \sin}^{2} a \\ \\ \therefore \cos2a =1 - 2 \bigg( { \frac{3}{5} }\bigg) ^{2} \\ \\\therefore \cos2a =1 - 2 \times \frac{9}{25} \\ \\\therefore \cos2a =1 - \frac{18}{25} \\ \\\therefore \cos2a = \frac{25 - 18}{25} \\ \\ \huge \purple{\therefore \cos2a} \orange{= }\red{\frac{7}{25} } \\ \\$

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Answer:

x =5

Step-by-step explanation:

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Ratios<br> Express each ratio as a fraction in the simplest for<br> MI<br> 1) 18 pounds to 22 pounds

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A ladder leans against the side of a house. The angle of elevation of the ladder is 64 degrees

ValentinkaMS [17]

Answer:

The length of the ladder is 14.5 ft

Step-by-step explanation:

For a right triangle

sinx = opposite / hypotenuse

Since we know the angle and the opposite side, we can calculate the hypotenuse

sin 64 = 13/ hypotenuse

Multiply each side by the hypotenuse

hypotenuse * sin 64 = 13

Divide by sin 64

hypotenuse = 13/sin 64

hypotenuse=14.4638

Rounding to the nearest tenth

14.5

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3 years ago