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Ede4ka [16]
4 years ago
11

Differentiate between:1.Crest and trough.2. Infrasound and ultrasound.​

Mathematics
1 answer:
Vinil7 [7]4 years ago
5 0

Answer:

A crest is the highest point of a wave.

A trough is the lowest point of a wave.

Infrasound is sound below the limit that humans can hear, below 20 Hz.

Ultrasound is sound above the limit that humans can hear, above 20,000 Hz.

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What is the quotient of (3x - 4x? + 8x - 1)(x - 2)?
NISA [10]

Answer:

-4x^2? + 8x? + 11x^2 - 23x + 2

Step-by-step explanation:

8 0
3 years ago
Find the greatest common factor: 4ab^2 c^4-2a^2 b^3 c^2+6a^3 b^4 c
Tatiana [17]
Well the GCF is the number that can be used to simplify, or that fits in all of your numbers for example this are all small numbers so 2 should fit in all of them 2 fits in 4 two times 2 fits in 2 one time and 2 fits in 6 three times now lets check our variable, to find the GCF of the variable first chekc if they all have the same if they don't u can't get none of taht variebles out, but if they repeat in all like the a u will take out the smallest amount out, for example the a as one in the degree of 1 the other in to the 2 degree and the last one to teh 3 degree well the smallest degree will be 1 so u will only take 1 a out so now ur GCF looks like 2a... Lets check the other variables, b is used in all of them and the smallest degree is b2 so we will take out 2 b's out so now my GCF looks like 2ab2 now lets check our last variable the, the c has the smallest degree of 1 so we will only take 1 c out
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Hoep this helps
6 0
3 years ago
Please help me with these factoring problems. Please help me solve. I can't do these!!
aleksley [76]
Simple...

you have: 

1.) -8x-16  --->>>

Factor out a -8 -->>

-8(x+2)

2.)9d+15db --->

Factor out 3d -->

3d(3+5b)

3.) 2a-9ax-->>

Factor out -a -->

-1a(9x-2)

Thus, your answer.
3 0
3 years ago
Look At The Picture Please Help!<br>Please Tell Me The step by step on how to do it
Lina20 [59]

Answer:

18

Step-by-step explanation: 32/5.76

See how much 32 goes into 57

32 goes into 57: 1 time

1 times 32 is 32

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Then bring down your 6 which now it will be 256

Now how much dose 256 go into 32

It would be 8: 8 x 32 is 256 - 256 = 0

So ur answer is 18



4 0
3 years ago
A person standing on the bank of a river finds that the angle of elevation of the top of a tower on the opposite bank is 45°. Th
nataly862011 [7]

Answer:

C

Step-by-step explanation:

Since this creates a 45-45-90 triangle, we know they are equal since the legs of 45-45-90 triangles are congruent

8 0
3 years ago
Read 2 more answers
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