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mash [69]
3 years ago
8

Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Mathematics
1 answer:
omeli [17]3 years ago
3 0

Answer:

(h+c)/ch ÷ (h²+c²)/c²h²

(h+c)/ch × c²h²/(h²+c²)

(h+c)/1 × ch/(h²+c²)

ch(h+c)/(h²+c²)

I would appreciate if my answer is chosen as a brainliest answer

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During the national day celebrations.Asha decorates her balcony with serial lights of red,green and white colours.The red light
expeople1 [14]

If all three coloured lights blink together at 8:49 pm, they will blink together at 8:50 pm

<u>Solution:</u>

Given that the red light blinks at intervals of 4 seconds, the green at 5 seconds and the white at 6 seconds.

If all three colored lights blink together at 8:49 pm,

We have to find when will they blink together again?

First let us know, at what intervals they all together blink.

For that we have to find the lcm of 4, 5, 6.

L.C.M (4, 5, 6) = 2 x L.C.M(2, 5, 3)

As 2,3,5 are primes, we can’t take common further, so multiply all  

= 2 x 2 x 5 x 3

= 4 x 15  = 60

So, after every 60 seconds = 1 minute they will blink.

Then, after 8 : 49 pm, they will blink at 8 : 49 + 1 = 8 : 50 pm.

Hence, they all blink at 8 : 50 pm.

6 0
3 years ago
Help me please I’ll mark brainliest thank you
jenyasd209 [6]

Answer:

11/15=x/240

240/15=16

11 x 16=176

11/15=176/240 or rather he completes 176 passes

Step-by-step explanation:

4 0
3 years ago
Karen invested $2,000 in a special savings account.
WARRIOR [948]

Answer:

D. $512,000

Step-by-step explanation:

Well if the balance doubles every 5 years, then dividing 40 by 5 gives us the number of times the money will double, which is 8. We can then turn this into the equation 2000(2^{8}). 2^8 can be simplified to 256. Multiply that by 2000 and we get our answer, 512000. Hope this helps!

<h2><em><u>Pls mark brainliest!</u></em></h2>
4 0
2 years ago
What is 1+1 ?<br><br> Plz help!!! Hurry plz, I need to know.
DaniilM [7]

Answer:

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Step-by-step explanation:

i finger plus another finger gives me......ahhhhh ik the answer its 2

4 0
3 years ago
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just olya [345]
X = 19.

Explanation:

This expression is vertical from the angle 135, meaning it is congruent. With that being said, we would need to find what 7 multiplies by to give us 2 less than 135, which would be 133. Because 133 divided by 7 equals 19, x = 19. If we plug this in, we get the following equation: 7(19) + 2 = 135.
6 0
2 years ago
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