Please help me with this

F. How does sound propagate in air? Explain in short with a diagram.

anyanavicka [17]

Answer:

Sound propagates through air as a longitudinal wave. The speed of sound is determined by the properties of the air, and not by the frequency or amplitude of the sound. Sound waves, as well as most other types of waves, can be described in terms of the following basic wave phenomena

7 0

3 years ago

A musician kept track of the concert arenas on this year's tour and found that 60% of the arenas were sold out. Of those that we

tensa zangetsu [6.8K]

Answer:

6%

Step-by-step explanation:

First, let's break this down:

60% of arenas sold out

90% had been on previous tour

Out of those arenas that did NOT sell out

25% had been on previous tour

We want to know the joint relative frequency of area that were sold out AND NOT on the previous tour schedule, therefore all the information about areas that did NOT sell out is irrelevant.

Because 90% of the areas that were sold out had been on the previous tour, 10% had NOT been on the previous tour.

Therefore, considering all the arenas, 10% of 60% of the arenas were sold out and not on the previous tour.

Let x equal the total number of arenas:

$(.10)(.60)x=0.06x$

Convert to percent

6%

Therefore, the joint relative frequency of sold out arenas that were not on the previous tour is 6%.

5 0

1 year ago

ASAP!! PLEASE I NEED HELP!!

sergey [27]

Answer:

If the length is 50 yd, the width is 60 yd.

If the length is 40 yd, the width is 75 yd.

If the length is 48 yd, the width is 62.5 yd.

If the length is 36 yd, the width is 83.33 yd.

The length and the width vary inversely because when the length decreased the width increased

Step-by-step explanation:

The area of any rectangle A = L × W, where

L is its length
W is its width

The relation is direct proportion if the quotient of two quantity equals constant (y/x = k, when y and x increased) and inverse if the product of the two quantity equals constant (yx = k, when x increased y decreased and vice versa)

∵ The area of the rectangular plot of land = 3000 yards²

∴ A = 3000

∵ Its length = 50 yards

∴ L = 50

→ Substitute them in the rule above to find W

∵ 3000 = 50 × W

→ Divide both sides by 50 to find W

∴ 60 = W

∴ The width of the plot is 60 yards

∵ Its length = 40 yards

∴ L = 40

→ Substitute them in the rule above to find W

∵ 3000 = 40 × W

→ Divide both sides by 40 to find W

∴ 75 = W

∴ The width of the plot is 75 yards

∵ Its length = 48 yards

∴ L = 48

→ Substitute them in the rule above to find W

∵ 3000 = 48 × W

→ Divide both sides by 48 to find W

∴ 62.5 = W

∴ The width of the plot is 62.5 yards

∵ Its length = 36 yards

∴ L = 36

→ Substitute them in the rule above to find W

∵ 3000 = 36 × W

→ Divide both sides by 36 to find W

∴ 83. 33 = W

∴ The width of the plot is 83.33 yards

∵ The area is a constant value

∵ A = LW

→ The product of L and W equals the constant value, can you discover

that from the values of L and W

∴ The length and the width of the rectangular plot vary inversely

7 0

4 years ago

Mr. Wong has between 300 and 1,000 small prizes to divide evenly among his

VashaNatasha [74]

He will give about 99 prizes to each student

6 0

4 years ago

At the movie theatre, child admission is $5.30 and adult admission is $9.40 . On Wednesday, four times as many adult tickets as

zzz [600]

Well, what you can do is divide both of them by $1544.40, and then figure out how many their were that day

6 0

4 years ago

Read 2 more answers