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2 years ago

Find the value of x.

Mathematics

1 answer:

Nadusha1986 [10]2 years ago

7 0

Answer:

71.79 degrees

Step-by-step explanation:

The cosine is (adjacent side to angle) / (hypotenuse)

so the cosine of x = 5/16

to get x you multiply cosine by its inverse

(cos^-1 x)(cos x) = (cos^-1 x)(5/16)

= 71.79 degrees

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Yakvenalex [24]

$6x^2+2x-9=0\\\\a=6;\ b=2;\ c=-9\\\\\Delta=b^2-4ac\to\Delta=2^2-4\cdot6\cdot(-9)=220\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-2-\sqrt{220}}{2\cdot6}=\dfrac{-2-\sqrt{220}}{12}\approx-1.4\\\\x_2=\dfrac{-2+\sqrt{220}}{2\cdot6}=\dfrac{-2+\sqrt{220}}{12}\approx1.1$

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2 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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1 year ago

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Montano1993 [528]

C. 7 cm by 7 cm by 43 cm

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2 years ago

katen-ka-za [31]

Answer:

1.2 litres more water should Josie drink.

Step-by-step explanation:

As given

It is recommended that an adult drink 64 fluid ounces of water everyday .

As given

1 ounce = 0.0296 litre .

Now convert 64 ounces into litre.

64 ounce = 64 × 0.0296

= 1.9 litres (Approx)

1 litre = 1000 ml

$1\ ml= \frac{1}{1000}\ litre$

Now convert 700 ml into litre.

$700\ ml= \frac{700}{1000}\ litre$

$700\ ml= \frac{7}{10}\ litre$

700 ml = 0 .7 litre

Thus

Recommended amount of water a adult should drink = Amount of water Josie already consumed + More water should Josie drink.

Putting the value

1.9 litres = 0 .7 litres + More water should Josie drink.

More water should Josie drink = 1.9 - 0.7

More water should Josie drink = 1.2 litres .

Therefore 1.2 litres more water should Josie drink.

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2 years ago