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Romashka [77]
3 years ago
12

A pole is centre of a circular pond of diameter 14m. Total height of a pole is 20m and its part inside a water is 3.5m. If a man

9f height 1.5m observed the top of the pole from the edge of pond, what is the angle of elevation does he get?​
Mathematics
1 answer:
monitta3 years ago
4 0

Answer:

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What is the constant of variation for the quadratic variation? 0.1y = 3x2
svet-max [94.6K]

Answer:

The constant of variation for the given quadratic equation is, 30

Step-by-step explanation:

One of the form of a quadratic equation is written as:

y = kx^2     ....[1]

where k is the coefficient and for this case the constant of variation.

In order to obtain the answer for the given equation, we write the given equation to the form above.

0.1y=3x^2  or

y=(\frac{3}{0.1})x^2 or

y=30x^2

Comparing this equation with equation [1], to get the value of k;

k=30.

therefore, the  constant of variation is, 30.

6 0
3 years ago
The circumference of a circle is 78π cm. Find the diameter, the radius, and the length of an arc of 140°.
jasenka [17]
 The correct answer is the option D, which is: <span>D. 78 cm; 39 cm; 30.3π cm
 The explanation is shown above:
 1-The formula for calculate the circumference of a circle is:
 C=2</span>πr
 78π=2πr
 2- The radius is:
 r=78π/2π
 r=39 cm
 3- The diameter is:
 D=39 cm x 2
 D=78 cm
 4- The arc length is:
 arc length=(140°π/180°)(39 cm)
 arc length=30.3π cm
 
5 0
3 years ago
Help me pleaseeeeeeee
melisa1 [442]

Answer:

45/28

Step-by-step explanation:

Hey There!

They want us to find the tangent of R

Remember in sohcahTOA

t - tangent

o - opposite

a - adjacent

meaning that

tan = \frac{opposite}{adjacent}

The opposite of angle r is 45

the adjacent of angle r is 28

so tanR=\frac{45}{28}

8 0
2 years ago
Describe what congruent figures and similar figures have in common <br>​
artcher [175]

Answer:

Congruent figures have the same measurements in angles (degrees) and sides (units).

Similar figures are figures that have the same general shape and don't necessarily have to have the same size or measurements.

Something they have in common are corresponding angles and corresponding sides.

4 0
3 years ago
1) Which is the image of (2, 3) under a 180 degree rotation about the<br> origin?
Blababa [14]

Answer:

(-2,-3)

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
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