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3 years ago

For finding the circumference of a circle: can an arc determine the circumference of a circle, yes or no

Mathematics

1 answer:

Ivanshal [37]3 years ago

3 0

Answer:

yes , an arc can indeed determine the circumference of a circle

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4/3 to the 2nd power

fgiga [73]

16/9 is the answer, just use a calculator next time or multiple 4/3 x 4/3

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3 years ago

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A student stands 20 m away from the foot

Ostrovityanka [42]

Answer:

Height of tree is $\approx$ 15 m.

Step-by-step explanation:

Given that student is 20 m away from the foot of tree.

and table is 1.5 m above the ground.

The angle of elevation is: 34°28'

Please refer to the attached image. The given situation can be mapped to a right angled triangle as shown in the image.

AB = CP = 20 m

CA = PB = 1.5 m

$\angle C$ = 34°28' = 34.46°

To find TB = ?

we can use trigonometric function tangent to find TP in right angled $\triangle TPC$

$tan \theta = \dfrac{Perpendicular}{Base}\\tan C= \dfrac{PT}{PC}\\\Rightarrow tan 34.46^\circ = \dfrac{PT}{20}\\\Rightarrow PT = 20 \times 0.686 \\\Rightarrow PT = 13.72\ m$

Now, adding PB to TP will give us the height of tree, TB

Now, height of tree TB = TP + PB

TB = 13.72 + 1.5 = 15.22 $\approx$ 15 m

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3 years ago

What is the middle term of the product of (x + 5)(x + 2)? ??

kotykmax [81]

Answer:

Step-by-step explanation:

Polynomial distribution:

(x + 5) (x + 2)

x^2 + 2x + 5x + 10

x^2 + 7x +10

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3 years ago

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Suppose u and v are functions of x that are differentiable at x=0 and that u(0)=3, u'(0)= -4, v(0)= 2, v'(0)= -7. Find the value

3241004551 [841]

$\bf \cfrac{d}{dx}[u(x)\cdot v(x)]\implies \cfrac{du}{dx}\cdot v(x)+u(x)\cdot \cfrac{dv}{dx}\quad 
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u(0)=3\qquad u'(0)=-4
\\\\
v(0)=2\qquad v'(0)=-7
\end{cases}
\\\\
\left[ \cfrac{du}{dx} \right]_{x=0}\cdot v(0)+u(0)\cdot \left[ \cfrac{dv}{dx} \right]_{x=0}$

so.. hmm pretty sure you know what that is

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3 years ago

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Which one is distributive property

faust18 [17]

Answer:

Step-by-step explanation:

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