3 years ago

What is constant of proportionality? →←

Mathematics

1 answer:

Triss [41]3 years ago

8 0

Answer:

Constant of proportionality is the ratio between two quantities. Y and x have to be proportional to each other.

Step-by-step explanation:

This would be represented as k=y/x

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The following figure is made of six semicircles with the same diameter, and of four congruent equilateral triangles represented

Oxana [17]

6 semicircles = 3 circles

The formula of the area of a equilateral triangle:

$A_\triangle=\dfrac{a^2\sqrt3}{4}$

We have a = |AE| = 3cm. Substitute:

$A_\triangle=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}\ cm^2$

The formula of the area of a circle:

$A_O=\pi r^2$

We have 2r = |AE| =3cm → r = 1.5cm. Substitute:

$A_O=\pi\cdot1.5^2=2.25\pi\ cm^2$

The area of the figure:

$A=4A_\triangle+3A_O\\\\A=4\cdot\dfrac{9\sqrt3}{4}+3\cdot2.25\pi=9\sqrt3+6.75\pi=6\dfrac{3}{4}\pi+9\sqrt3\\\\=\dfrac{27}{4}\pi+\dfrac{36\sqrt3}{4}=\dfrac{9}{4}\cdot3\pi+\dfrac{9}{4}\cdot4\sqrt3=\dfrac{9}{4}(3\pi+4\sqrt3)\ cm^2$

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3 years ago

Answer: Alex is making a clock to give to his grandfather. To make the clock, he saws a slice of wood from a cylindrical log. Wh

ss7ja [257]

It would be circular since it was cut from a cylindrical log.

Hope This Helps You!
Good Luck Studying :)

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3 years ago

Read 2 more answers

Find the slope of the line through P(5,7) and Q( -1 + 7)

Anna [14]

<span>P(5,7) and Q( -1, + 7)
</span>
slope = (7 - 7)/(5+1) = 0/6 = 0
slope = 0

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3 years ago

Write three expressions that are equivalent to 2^6

aleksandr82 [10.1K]

Answer:

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Mashutka [201]

$10.99/12=A
then
A*15=$pizza cost

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4 years ago