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ss7ja [257]
3 years ago
13

Which statement about sound is true because it is a mechanical wave?

Mathematics
2 answers:
PtichkaEL [24]3 years ago
5 0

Answer: It must travel through a medium.

Step-by-step explanation:

A sound wave transports its energy by means of particle interaction. A sound wave cannot travel through a vacuum. This makes sound a mechanical wave.

maw [93]3 years ago
4 0

Answer:

It must travel through a medium

Step-by-step explanation: Because I said so >:(

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3/11 ÷ 3/11<br>and <br>9/10 ÷ 3/5<br><br>PLZ HELP ME<br>​
mafiozo [28]

Answer:

3/11 divided by 3/11 is 1

9/10 divided by 3/5 is 1 1/2 (1.5)

Step-by-step explanation:

5 0
3 years ago
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During the school fundraiser, lsaac sold tubs of cookies dough for $15 each. He made $165. Write an equation that could be used
gregori [183]

165\15= number of tubs

165 divided by 15 equals the amount of the tubs that he sold.

(I assume the two different name things, isaac&dominic, is a mistake since there isnt any information for Dominic)

3 0
2 years ago
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Lelu [443]

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3 0
2 years ago
Solve the system by graphing. Y=2x-9 y=-2x-1
sattari [20]

Answer:

(2,-5)

Step-by-step explanation:

See attachment

One can also solve this by calculation:

y=2x-9

y=-2x-1

-

Rearrange either equation to find x.  I'll use the first:

y=2x-9

2x = y+9

x = (y+9)/2

Now use this value of x in the second equation:

y =  -2x-1

y =-2((y+9)/2)-1

y = (-2y-18)/2)-1

y = -y -9 - 1

2y = -10

y = -5

Now use -5 for y in the rearranged equation:

y =  -2x-1

-5 =  -2x-1

-2x = -4

x = 2

Solution is (2,-5)

But the question wants a graph solution, which is also fun when you use DESMOS.

4 0
2 years ago
What is 35% of 60? I need it for studying
seraphim [82]
35% of 60 is 21. Hope this helped!

8 0
3 years ago
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