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ICE Princess25 [194]
3 years ago
5

How far sound travels in 3 × 10^10 seconds

Mathematics
1 answer:
NeTakaya3 years ago
4 0
In dry air the sound travels with 331,2 m/s
in 3*10^10 the distance will be 3*331,2*10^10 m=9936*10^9 m=9936*10^6 km
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The atmospheric pressure on an object decreases as altitude increases. If a is the height (in km) above sea level, then the pres
seraphim [82]

Answer:

373.8mmHg

Step-by-step explanation:

a =height (in km) above sea level,

the pressure P(a) (in mmHg) is approximated given as

P(a) = 760e–0.13a .

To determine the atmospheric pressure at 5.458 km, then we will input into the equation

P(5.458km) = 760e–0.13a .

= 760e^(-0.13×5.458)

=760e^-(0.70954)

= 760×0.4919

=373.8mmHg

Therefore, the atmospheric pressure at 5.458 km is 373.8mmHg

3 0
2 years ago
There are 20 marbles in the box. 4 marbles are black, 6 marbles are blue, 10 are red. What is the probability of drawing a black
Nitella [24]

Answer:

7/10 or 70% or 0.7

Step-by-step explanation:

4 black, 10 red

10+4=14

now you put it over the total marbles

14/20=7/10

i don't know how your teacher wants you to give the answer but it is 7/10 or 0.7 or 70%

4 0
2 years ago
What's the ? ,need help asap
zaharov [31]

Answer:

6

Step-by-step explanation:

just a guess

9+3+6+7 = 25

5+5+4+9 = 23

6+8+4+? = 24     ? = 6

8 0
2 years ago
During a 35% off sale at the furniture store, you found a chair with the original price of $84.61. How much will the sale price
Dafna11 [192]

Answer:55$

Step-by-step explanation:84.61 x .35 = 29.61

84.61 - 29.61 = 55

7 0
3 years ago
What is the y-intercept of the function f(x)=4 - 5x?<br> -5<br> -4<br> 4<br> 5
Len [333]

Answer:

4

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f(x)=4-5(0)

f(0)=4-0

f(0)=4

So it will (0,4)

3 0
2 years ago
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