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Mama L [17]
3 years ago
9

A student is standing a distance of 4 m from the school bell. If the student moves to a distance 20 m away, what fraction of the

original intensity of the bell’s sound will the student hear?
Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0

Answer:

Fraction=1/5=0.2

Step-by-step explanation:

If the student is 4m away from the school bell and moves 20m away, it means that he is 5 times more distant from the school bell and therefore should listen 5 times less, that is, 1/5 of the original sound.

Note: this as long as the initial environment conditions of 4m are the same at 20m

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Meld,elellelee,lee,”d,d
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Triangle- interior angle<br> Please help !
sp2606 [1]

Answer:

x = 25

<B = 120 degrees

<C = 30 degrees

Step-by-step explanation:

Total angle measure of a triangle - 180 degrees

Add all the angles together to find the value of x

30 + 4x + 20 + x + 5 = 180

55 + 5x = 180

55 - 55 + 5x = 180 - 55

5x = 125

\frac{5x}{5} = \frac{125}{5}

x = 25

<B = 4(25) + 20

<B = 100 + 20

<B = 120

<C = 25 + 5

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7 0
3 years ago
-9h - 15 =30<br> plz answer lol
Lemur [1.5K]

[Add] 1.

-9h = 30 + 15

[Simplify] 2.

-9h = 45

[Divide] 3.

h = -  45/9   ( A negative Divide)

[Answer] 4.

h = -5

4 0
3 years ago
Read 2 more answers
A candy store held a contest to guess the total number of jelly beans in a jar. All of the jelly beans in the jar were either gr
Fudgin [204]

Answer:

Step-by-step explanation:

Let the number of orange jelly beans be x , as we do not know the exact value of it yet. There are 12 times as many green jelly beans than the orange ones. So , if the number of orange jelly beans is x , the number of green jelly beans will be = 12 times x , which can be written as 12x. Now there are a total of 1872 jelly beans , but they are either orange or green , so we already know that the number of orange jbs is x , and the number of green jelly beans is 12x. So if we the green jelly beans and orange jelly beans , it should be 1872.

Now all we need to do is to find x.

We know that ,

x + 12x = 1872

Now we add x and 12x on the left hand side

13x = 1872

Now we divide both sides by 13 to get x. (That includes 1872 as well)

x = 144

Now we have the value of x which is 144

We know that the number of green jelly beans was 12 times x

So the number of green jelly beans in numeric value is : 12 * 144

As x is equal to 144

Ans . : The number of green jelly beans is 1728.

6 0
3 years ago
What is the x-intercept of the line containing the points (–6, 10) and (12, –2)?
const2013 [10]
Slope = (-2 - 10)/(12 + 6) = -12/18 = -2/3

y = mx + b
10 = -2/3(-6) + b
10 = 4 + b
b =6

equation
y = -2/3x + 6

<span>x-intercept when y = 0
</span>-2/3x + 6 = 0
-2/3x = -6
      x = 6 (3/2)
      x = 9

answer is <span>d.9</span>
8 0
3 years ago
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