Help me PLEASE! it’s due soon (links = report )

Mathematics

1 answer:

chubhunter [2.5K]2 years ago

5 0

Answer:

9 faces

21 edges

14 vertex

also iys called a heptagonal prism

Hope it helps :)

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The sum of a rational number and an irrational number equals:

WINSTONCH [101]

Answer: is an irrational number

Step-by-step explanation:

Like adding three to pi (3.14159265358979323846264....)is still going to be irrational

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2 years ago

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1. The C major key, starting with the middle C, consists of seven notes (white keys on the piano) with the following frequencies

Lorico [155]

1.) the ratio of the note A to middle C = 440.0 / 261.6 = 1.6820 ≈ 1.6818

2.) the ratio of the note D to middle C = 293.7 / 261.6 = 1.1227

3.) D# = 293.6 x 1.0595 = 311.1

4.) the ratio of the frequency of G to C is 1 : 262/392 = 1 : 0.6683 ≈ 3 : 2

5.) the ratio of the frequency of E to C = 1 : 262/330 = 1 : 0.7939 ≈ 5 : 4

6.) The component in a musical note is referred to as the pitch of a sound is the frequency.

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2 years ago

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NO LINKS!!!! Find the equation of the circle below

inysia [295]

Answer:

$(x+3)^2+(y-2)^2=9$

Step-by-step explanation:

Equation of a circle

$(x-a)^2+(y-b)^2=r^2$

where:

(a, b) is the center
r is the radius

From inspection of the diagram, the center of the circle appears to be at point (-3, 2), although this is not very clear. Therefore, a = -3 and b = 2.

Substitute these values into the general form of the equation of a circle:

$\implies (x-(-3))^2+(y-2)^2=r^2$

$\implies (x+3)^2+(y-2)^2=r^2$

Again, from inspection of the diagram, the maximum vertical point of the circle appears to be at y = 5. Therefore, to calculate the radius, subtract the y-value of the center point from the y-value of the maximum vertical point:

⇒ radius (r) = 5 - 2 = 3

Substitute the found value of r into the equation:

$\implies (x+3)^2+(y-2)^2=3^2$