A sound wave with amplitude xo is measured by an observer to have an intensity of I0 when the observer is standing 4.0 meters from the source. Which best describes the amplitude of a sound wave and distance from the source where it will be measured with an intensity of 16Io?

Answer:

option 4 is definitely the answer

Answer:

8

Step-by-step explanation:

It's a ratio.

h/15=24/45

cross-multiply

45h=360

h=8

(the question is formatted a bit weird, but I'm assuming the third statement is meant to be '1/3 of the number is a square number'. If not, let me know and I'll adjust my answer accordingly)

Answer:

The number is 27

Step-by-step explanation:

Let the number be called x.

10% of x is greater than 1 but less than 7. Written mathematically, this is 1<0.1x<7. Multiply this by ten to get 10<x<70.

1/3 of x is a square number. The squares 4, 9, and 16 are the only squares that satisfy this statement, because the if the square was 1, x would be 1, which doesn't fit x>10, and if the square was 25 or higher, x would be greater than 70, which doesn't fit x<70.

x isn't a multiple of six. If the square is 4, x is 12, which is a multiple of six so this doesn't work. If the square is 16, x is 48, which is a multiple of six too, so this doesn't work. But if the square is 9, x is 27, which isn't a multiple of six and satisfies the statement.

Double check that x=27 is a valid answer.

Is 27 a whole number between 1 and 100? Yes

Is 10% of 27 greater than 1 and less than 7? Yes (10% of 27 is 2.7)

Is 1/3 of 27 a square number? Yes (1/3 of 27 is 9, which is the square of 3)

Is 27 not a multiple of 6? Yes (27 isn't divided evenly by 6)

Therefore, the number is 27.

Answer: You multiply 8 x 3/4=24/4.  Then you simplify your answer and it is 6 hours.  24/4 is division 24 divided by 4 equals 6.

Step-by-step explanation: Or, you can change 3/4 to a decimal which is .75.  Then you multiply .75 x 8 and the answer is 6.00 which is 6 hours because you do not use the zeros after the decimal point.

Answer:

2 hours

Step-by-step explanation:

You can just multiply 1/4 by 8. You're simply just adding on 1/4 8 times, and that is the same as multiplying.

Answer: $13339.25

Step-by-step explanation:

Since 500 shares of Intel were sold for $26.75 per share, the total amount will be:

= 500 × $26.75

= $13375

Since the broker charges a

commission of $2.75 per thousand dollars of stock bought or sold, the amount charged by the broker on $13375 will be:

= $2.75 × 13

= $35.75

The amount that'll then be credited into ones account will be:

= $13375 - $35.75

= $13339.25

Answer:

8

Step-by-step explanation:

Two negatives mean you make a positive and 4 x 2 is 8

Answer:

8

Step-by-step explanation:

Negative times negative = positive

Cancel out the negative symbol

Now multiply: 2*4=8

Answer:

4 in

Step-by-step explanation:

Given the following data;

Length = 16 in

Width = 20 in

To find the scale factor;

Scale = 16:20

Dividing by 4, we have;

Scale = 4:5

Therefore, the scale factor is 4 in.

Scale = scale factor * ratio

Scale = 4 * (4:5)

Scale = 16:20

the answer is 6 minutes and 46 seconds

Answer: .14

Step-by-step explanation: 2020 edg

Answer:

.14

Step-by-step explanation:

I just took the test

Answer:

b

Step-by-step explanation:

Answer:

-2/3

Step-by-step explanation:

-1.5 - 0.5 / 2.5 - (-0.5)

= -2/3

I thinks it's the last one

hope this helps

Answer:

Step-by-step explanation:

Their rate when working together:

Correct choice is B

Answer:

E

Step-by-step explanation:

The maximum of the data set is the point to the far right.

Point E is the maximum

Point A is the minimum

Point C is the mean

Answer:

L

Step-by-step explanation:

Answer:

c and

28.57%

Step-by-step explanation:

count how many number fall into each category

50-59 has 1

60-69 has 2

70-79 has 4

80-89 has 4

and 90-99 has 3

So the last histogram fits this data

to find the % of those that are between 70-79, take the total number of items that fit into that category (4) and divide by the total number of items (14)

4/14=.2857 --> turn to a percent .2857*100=  28.57%

Answer:

it's B

Step-by-step explanation:

It's definitely B

p(r + s) = 5 and q(r + s) = 3.

by simply addind those two equations.

p(r + s) + q(r + s) = 5 + 3

(p + q) (r + s) = 8                 Statement #2: (p + q) = (r + s)

(p+q)×(r+s)=(p+q)×(p+q)=(p+q

it's been said it's not allowed us to arrive at a specific numerical value. The statementby itself inadequate.

Answer:

C. y<62

Step-by-step explanation:

107<45+y

(take 45 from both sides)

62<y, or y>62

The answer of the given inequality is 107>45+y is y<62.

We have given that inequality

107<45+y

Inequality is a relation that makes a non-equal comparison between two numbers or other mathematical expressions. It is used most often to compare two numbers on the number line by their size.

107<45+y

(take 45 from both sides)

Therefore the solution of inequality  62<y, or y>62.

To learn more about the inequality visit:

https://brainly.com/question/24372553

#SPJ2

Answer:

your awnser would be option A. triangular prism

Step-by-step explanation:

Answer:

triangular prism

Step-by-step explanation:

Answer:

no. who eat lunch special = 12

no. who eat dessert = 6

Step-by-step explanation:

Let x = no. who eat lunch special

y = no. who eat dessert

(1)    8x + 2y = 108             (2)    6x + 3y = 90

 Divide thru by 2                         Divide thru by 3

      4x + y = 54                          2x + y = 30

     -2x - y = -30

       2x = 24

         x = 12                               2(12) + y = 30

                                                    24 + y = 30

                                                            y = 6

Answer:

2

Step-by-step explanation:

As it would look better.

1 would make the graph too big

12 would be useless as there are no "answers" more than 12

10 would be useless too as the biggest number used is 10. therefore, 5, 7 would be cramped and too hard to figure out.

Answer:

y = x 4 − 6

y = 1 x − 2

Step-by-step explanation:

Hope I answered the question right!!

Answer:

12960 biscuits

Step-by-step explanation:

1 carton= 24 packets of biscuits

45 cartons= 45x24=1080 packets.

One packet = 12 biscuits

1080 packets- (1080x12)

=12960 biscuits

plz mark me as brainliest.

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

Each point moves to 3 times its original distance from the blue dot. Each length is 3 times as long as the original.

Answer:

2.0

Step-by-step explanation:

Should be right

Answer:

[tex]14 units[/tex]

Step-by-step explanation:

[tex]Solution:-[/tex]

[tex]A(5,1)B(7,1)[/tex]

[tex]\sqrt{(x_{1}-x_{2} ) ^{2}(y_{2} -y_{1}x^{2} }[/tex]

[tex]AB=\sqrt{(7-5)^{2} +(1-1)^{2} }[/tex]

[tex]= \sqrt{2^{2} } =2[/tex]

[tex]BC=\sqrt{7-7^{2}+(6-1)^{2} }[/tex]

[tex]=\sqrt{5^{2} } =5[/tex]

[tex]perimeter=2(AB)+2(BC)[/tex]

[tex]= 2(2)+2(5)\\[/tex]

[tex]= 4+10= 14[/tex]

[tex]-----------[/tex]

hope it helps...

have a great day!!

Answer:

84 yards squared

Step-by-step explanation:

Use the formula- A= 1/2(b1 +b2)h

So 8+6=14 and 14x12 equals 168. That times 1/2 equals 168 :)