answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AleksandrR [38]
2 years ago
11

The speed of sound is approximately 340 m / s. How long will it take for the sound to travel from the batter to a spectator who

is seated 30 meters away? How long will it take if the spectator is 150 meters away?
Mathematics
1 answer:
iris [78.8K]2 years ago
4 0
The first answer is 3/34 sec and the second answer is 15/34 sec.

Set up a proportion for these problems.  For the first question,
340/1 = 30/x

Cross multiply:
340*x = 1*30
340x = 30

Divide both sides by 340:
340x/340=30/340
x = 30/340 = 3/34

For the second question,
340/1 = 150/x

Cross multiply:
340*x = 150*1
340x=150

Divide both sides by 340:
340x/340 = 150/340 
x = 150/340 = 15/34
You might be interested in
Lester worked 12 hours last week at the grocery store and earned $93.00. If he continues to earn the same hourly pay, how many a
kykrilka [37]
93 / 12 = 7.75

so Lester earns $7.75 a hour.

if he earns $62 how many hours did he work.

so 62 = 7.75 (h)

62/ 7.75 = 8

so he worked 8 hours.
4 0
2 years ago
Read 2 more answers
Marvin has a coupon the discount is the rental of a full-size car by $25 they decide to buy insurance for each day if the cost i
ipn [44]

Answer: Marvin needs approximately 19 days to rent the car.

Step-by-step explanation:

Since we have given that

Amount Marvin get on a discount coupon = $25

She decided to buy insurance for each day.

Let the number of days be x

cost of insurance = $465

According to question, it becomes,

25x=465\\\\x=\frac{465}{25}\\\\x=18.6\\\\x=19\ days

Hence, Marvin needs approximately 19 days to rent the car.

7 0
2 years ago
Read 2 more answers
Elijah and Jonathan play on the same soccer team. They have played 3 of their 15,
Lynna [10]

Answer:

Only Elijah's model is correct

Step-by-step explanation:

The data given in the question tells us they have 12 games left on their soccer team. Each one of them tried to simulate the fact by creating some model which look like a balance between quantities.

Elijah placed 3 cubes of value 1 and a cube of value x on one side of a balance. On the other side, he placed 15 cubes of value 1. He was obviously modeling the fact that 15 cubes (games due to play in our case) should be equal to 3 cubes (games already played) plus the x numbers left to play

This model if perfect, since the only way to equilibrate the balance is setting x to 12, the games left to play

Jonathan used a table with 3 x's in a row and a 15 in the second row, trying to model the same situation. To our interpretation, this table doesn't show the number of games left to play. If we equate 3x = 15, we get x=5 which has nothing to do with the situation explained in the question, so this model is not correct.

5 0
2 years ago
You earn $15n$15n​ dollars for mowing $n$n​ lawns. How much do you earn for mowing 1 lawn? 7 lawns?
vampirchik [111]

Answer:

50

Step-by-step explanation:

5 0
1 year ago
the ratio of chicken to pigs to horses in a farm is 10:2:3.if there is 120 chickens in the farm then the number of the horses in
Veseljchak [2.6K]

Answer:

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • The sixth grade art students are making a mosaic using tiles in the shape of right triangles. Each tile has leg measures of 3 ce
    11·1 answer
  • PLEASE HELP NEED TO PASS!!!!!!!!The graph shows the relationship between the number of ounces of cereal in a box and the price o
    15·2 answers
  • A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is___ units. The point (
    7·2 answers
  • <img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B12%20%7Bx%7D%5E%7B6%7D%20%20%7By%7D%5E%7B7%7D%20%7D%20%20%5Ctimes%20%20%5C
    7·1 answer
  • A gardener wants to plant 122500 trees in his field in such a way that the number of trees in a row is equal to the number of ro
    15·1 answer
  • What is the format of this proof? Given: ∠ABC is a right angle, ∠DBC is a straight angle Prove: ∠ABD is a right angle two-column
    7·2 answers
  • The revenue each season from tickets at the theme part is represented by t(x) = 5x. The cost to pay the employees each season is
    13·1 answer
  • Pete’s return from selling his investment is $22,000. He had purchased the investment at a cost of $20,000. What is Pete’s retur
    11·1 answer
  • The ratio of boys to girls in Mr. Castillo's
    6·2 answers
  • The formula for the remaining volume of fuel in a car's tank is I-E\cdot DI−E⋅DI, minus, E, dot, D, where III is the initial vol
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!