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3 years ago

Find the measure of DF

Mathematics

1 answer:

WITCHER [35]3 years ago

4 0

Answer:

144 = arc DF

Step-by-step explanation:

Inscribed Angle = 1/2 Intercepted Arc

72 = 1/2 arc DF

Multiply by 2

2*72 = arc DF

144 = arc DF

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How can we represent a time that came before a specific zero point

Oduvanchick [21]

Answer:

by stating what the time was before the zero point came.

Step-by-step explanation:

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3 years ago

Find the volume of the rectangular prism below. Answer as a mixed number not a decimal.

dangina [55]

Answer:

242 2/3in^3

Step-by-step explanation:

The formula is l*w*h. So if you multiply all of them you'll get 242 2/3.

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3 years ago

If x^2+1/x^2=3 find the value of x^2/(x^2+1)^2<br> Express answer as a common fraction.<br> Thanks!!

timama [110]

$x^2+\dfrac1{x^2}=3\implies x^4+1=3x^2\implies x^4-3x^2+1=0$

By the quadratic formula,

$x^2=\dfrac{3\pm\sqrt5}2\implies x^2+1=\dfrac{5\pm\sqrt5}2$

Then

$(x^2+1)^2=\dfrac{25\pm10\sqrt5+5}4=\dfrac{15\pm5\sqrt5}2$

$\implies\dfrac{x^2}{(x^2+1)^2}=\dfrac{\frac{3\pm\sqrt5}2}{\frac{15\pm5\sqrt5}2}=\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}$

Multiply numerator and denominator by the denominator's conjugate:

$\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15$

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3 years ago

The distance between London and Cardiff is 150 miles. <br> what is the distance in kilometers?

Tanya [424]

241.402 kilometers

Hope Your Thanksgiving Goes Well, Here's A Turkey

-TheKoolKid1O1

3 0

3 years ago

Read 2 more answers

Mark is flying a kite and realizes that 300 feet of string is out. Mark anchored the kite to the ground. The angle of the string

Nadya [2.5K]

Answer:

The kite is 202.7 feet above the ground

Step-by-step explanation:

The scenario is depictedd in the picture attached

we have to find the height.

Trigonometric ratios will be used to find the height.

So,

$sin\ (42.5) = \frac{h}{300}\\ 0.6756=\frac{h}{300}\\0.6756*300=h\\202.68 = h$

The height is 202.68 feet

Rounding off to the nearest tenth

202.7 feet

Therefore, the kite is 202.7 feet above the ground ..

3 0

3 years ago