Mathematics High School

4. How many seconds will it take an echo to reach your ears if you yell toward a mountain
82 m away on a day when the air temperature is Oº C?
t = ?​

Answers

Answer 1
Sorry if it's low quality and blurry.

4. How Many Seconds Will It Take An Echo To Reach Your Ears If You Yell Toward A Mountain82 M Away On
Answer 2

The time taken by sound to reach your ear is 0.25 second.

Time of echo :

The speed of sound at temperature of 0º C is 331.5m/s

the relation between distance , time and velocity is,

                [tex]x=v*t\\\\t=\frac{x}{v}[/tex]

Where, x is distance, v is velocity and t is time.

Given that,  [tex]x=82m,v=331.5m/s[/tex]

Substitute values in above relation.

              [tex]t=\frac{82}{331.5}=0.25second[/tex]

the time taken by sound to reach your ear is 0.25 second.

Learn more about the sound velocity here:

https://brainly.com/question/2142871

Related Questions

8 more than 2 times a number is 29.

Answers

the answer is 10.5 because the equation is 2x+8=29

Answer:

X = 21/2 = 10 1/2 or 10.5

Step-by-step explanation:

2x + 8:= 29

    -8.      -8

2x. = 21

divde both sides by 2

x = 21/2 = 10 1/2

help pleaseseee

what’s the answer

Answers

Answer:

nice

Step-by-step explanation:

Answer:

115

Step-by-step explanation:

I think 115 because The angles are 50, 65, 65. So just subtract 65 from 180 to get your answer. Or just add 50 and 65 to get your answer.

Was this helpful??

16 Which expression is represented by the model shown below?

Answers

I think it’s the first one


Divide. Round your answer to the nearest whole number.
91,543 = 5 =​

Answers

Answer:

i assume you mean divide so its 18308

Step-by-step explanation:

8.08 x 10^6 x 7.5 x 10-2

Answers

Answer:

=

5

2

Step-by-step explanation:

please fill in the blanks i need this

Answers

Answer:

110

242

Step-by-step explanation:

To get the amount for Number of ships 5. you do 5*22.

Same for the the #11. you do 11*22.

Also, Pick me as the smartest please.

Ten less than seven times a number is twenty three.

Answers

Answer:

I believe the number is 4.7

i think it’s 10-7x=23

Stephanie's cable company charges $29.95 per month, plus $3.00 for each on-demand
movie rented. If Stephanie's cable bill last month was $44.95, how many on-demand
movies did she rent last month?



Pls help me plssssssss

Answers

Answer:

5

Step-by-step explanation:

44.95-29.95=15/3=5

Compare using >, <, or =.
a. 2 tenths + 11 hundredths O 0.13

Answers

Answer:

2 Tenths > 11 Hundredths

2 Tenths Is Greater Than 11 Hundredths

2 Tenths + 11 Hundredths = 0.31

A: HL
B: ASA
C: SSS
D: SAS

Answers

Answer:

D: SAS

Step-by-step explanation:

Use distributive property to rewrite 1/2 (4x - 6)

Answers

Answer:

The answer would be 2x-3

A restaurant bill is $25, and a 20 percent tip should be given to the waiter. Which expression can be used to find the total amount that will be paid?
25 dollars times 0.02
25 dollars times 0.20
25 dollars times 1.20
25 dollars times 2.00

Answers

Answer:

B.) 25 dollars times 0.20

Step-by-step explanation:

0.20 = 20%.

Answer: Cost= 25 +0.2*25

Step-by-step explanation:

?

(4 - 7) to the 2nd power -6 x 7 + 20​

Answers

(4-7)^2 -6X7+20 = -13

The number of cookies Natalie can bake varies directly with the time she
spends baking. She can make 3 dozen cookies in 0.5 of an hour. How many
dozen cookies can she make in 5 hours?

Please help fast!!

Answers

We already know that 0.5 of an hour, or half of an hour, is 30 minutes. We also know that 3 dozen equals 36. With this information, we can conclude that Natalie can make 72 cookies in one hour. 72 times 5 is 360. 360 divided by 12 is 30, so, Natalie can bake 30 dozen, or 360, cookies in five hours.

the answer would be 10 dozen cookies

The sales tax rate in New Mexico is 8% You buy an Anime coloring book that is $18. What is the final price of the Anime coloring book? Justify how you determined the final price.

Answers

Answer: $ 19.44

Step-by-step explanation:

Give : Original price of coloring book = $18

Sales tax = 8% =0.08 [we divide number by 100 to remove %]

Now , the final price of the Anime coloring book = Original price + (Original price) x (Sales tax)

=$ ( 18+18 x 0.08)

= $ (18)(1+0.08)

= $ (18)(1.08)

= $ 19.44

Hence, the final price of the Anime coloring book = $ 19.44

HELP I’m almost out of time ( it’s not Y=2x+4)

Answers

Answer:

y=2/5

Step-by-step explanation:

_+;3_;3(_+3++_83 I got you man

The metal that is used to hold stained glass pieces together is called __________. a. cement c. paste b. framing d. leading

Answers

Answer:

Paste is the answer if I remember

The metal that is used to hold stained glass pieces together is called... D-leading

the slope is 5 passing throught(-1,4)​

Answers

Answer:

eqn of line

5x-y=-9

Step-by-step explanation:

Answer:

y = 5x + 9

Step-by-step explanation:

Assuming you require the equation.

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 5 , thus

y = 5x + c ← is the partial equation

To find c substitute (- 1, 4) into the partial equation

4 = - 5 + c ⇒ c = 4 + 5 = 9

y = 5x + 9 ← equation of line

please help thank you​

Answers

Answer:

B

Step-by-step explanation:

A=4 so its wrong cause the original one is 10-12=-2

how many meters are equal to 3,736 cm

A. 373.6 meters

B. 3.736 meters

C. 37.36 meters

D. 37,360 meters
​

Answers

Answer:

C

Step-by-step explanation:

3,735 cm = 37.36 meters

A closed circle on the number line indicates the bondary point is included in the solution set. Ture False​

Answers

Answer:

A closed circle on the number line indicates that the boundary point is included in the solution set

Step-by-step explanation:

I think that can help :) wanna chat add me as  frind

Simplify the following expression (87x + 63y) - (6x + 32y)

Answers

Answer: 81x + 31y

Step-by-step explanation:

Can someone help show work pls?

Answers

Answer:

569

Step-by-step explanation:

hope it will help you

(14-7×7)16

(14-49)16

(-35)16

-560

Which shows the sides in order from longest to shortest? Line segment P Q, line segment R Q, line segment R P Line segment R Q, Line segment P Q, line segment P Q Line segment R Q, line segment R P, line segment P Q Line segment R P, line segment P Q, line segment R Q

Answers

Answer:

B

Step-by-step explanation:

add two fractions please 2/5+1/4

Answers

Answer is 1/2 hope this helps

Answer:

13/20

Step-by-step explanation:

solve for x: y=-3x+5

Answers

Answer:

x= (y-5)/(-3)

Step-by-step explanation:

3x +5y How do I calculate this?

Answers

Answer:

well since 3x+5y cannot be added because they are not the same exponent or letter its just 3x+5y.

Step-by-step explanation:

hope this helps, and im sorry if its wrong

In triangle DEF, segment DJ is a perpendicular bisector of side EF. If EJ is 3y-8 and JF is 7y-40, what is the length of JF?

Answers

Answer: The length of JF = 16 units.

Step-by-step explanation:

Given: In triangle DEF, segment DJ is a perpendicular bisector of side EF.

i.e. DJ is perpendicular to EF and DJ divides EF into two equal parts EJ and JF. [The perpendicular bisector is a line that is perpendicular to a line segment and splits it into two congruent segments.]

If  EJ is 3y-8 and JF is 7y-40.

Then, [tex]3y-8=7y-40[/tex]

[tex]\Rightarrow\ 7y-3y=40-8\\\\\Rightarrow\ 4y=32\\\\\Rightarrow\ y=8 \text{ [Divide both sides by 4]}[/tex]

JF= 7(8)-40 =56-40= 16 units

Hence, the length of JF = 16 units.

Answer:

plz giv brainlist

Step-by-step explanation:

which is Not equal to thr absolute value of -5?

Answers

Answer:

5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

What is the ratio 4:6 in its simplest form


Answers

Answer:

2 : 3

Step-by-step explanation:

4 : 6

Divide each by 2

2 : 3

Answer:

2:3

Step-by-step explanation:

4:6 is the same as 4/6.

And if we divide by 2 so we get 2/3 also known as 2:3.

Hope this helped :D

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