1answer.
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
Troyanec [42]
3 years ago
12

Hyperloop, a new mode of travel, aims to reach a speed of 170170 \dfrac{\text{m}}{\text{s}} s m ​ . This is 50\%50% less than th

e speed of sound. What is the speed of sound?
Mathematics
1 answer:
liraira [26]3 years ago
7 0

Answer:

Speed of sound is 340 meter per second.

Step-by-step explanation:

Let the speed of sound = x meter per second.

It is given that,

The new mode of travel has the speed 170 meter per second, which is 50% less than the speed of sound.

So, we get,

x - 50%x = 170

i.e. x - 0.5x = 170

i.e. 0.5x = 170

i.e. x = 340 meter per second

Hence, the speed of sound is 340 meter per second.

You might be interested in
What is the solution of the equation 9^2x=6? Round your answer to the nearest ten-thousandth.
sammy [17]

Answer:

0.4077

Step-by-step explanation:

It's important to use parenthesis to avoid confusion.

9^(2x) = 6

Use exponent properties:

(9^2)^x = 6

81^x = 6

Take log of both sides

ln(81^x) = ln(6)

Use log properties:

x ln(81) = ln(6)

Solve for x:

x = ln(6) / ln(81)

x ≈ 0.4077

4 0
3 years ago
Solve for k: -3k -3k = -29 + 77
sineoko [7]

Answer:

k=48

Step-by-step explanation:

Add  -29 and 77

k: -3k -3k =48

6 0
3 years ago
Read 2 more answers
write an expression for the new balance using as few terms as possible. A checking account has a balance of -$126.89. A customer
Nutka1998 [239]

Answer:

New balance = -151.89 + 4.5x

(where x is the value of the smaller deposit)

Step-by-step explanation:

The inicial balance was -126.89.

Then, it were made two deposits, one with the value of x, and one that is 3 1/2 times the other, that is, 3.5x.

Then, the customer made a withdraw of $25.

So, The new balance can be calculated as:

New balance = inicial balance + x + 3.5x - 25

New balance = -126.89 + 4.5x - 25

New balance = -151.89 + 4.5x

8 0
4 years ago
Please help me solve
telo118 [61]

Answer:

(0, -1)

Step-by-step explanation:

x becomes x - 6, so subtract 6 from the x-coordinate.

y becomes y - 1, so subtract 1 from the y-coordinate.

P(6, 0) -----> P'(0, -1)

7 0
3 years ago
The coefficient of x in the expansion of the following is (x+3)^3 a) 1 b) 3 c) 18 d) 27 e) 9
VashaNatasha [74]

Answer:

  d) 27

Step-by-step explanation:

The expanded form of (a+b)³ is ...

  (a +b)³ = a³ +3a²b +3ab² +b³

When we are expanding (x +3)³, the x-term is ...

  3(x)(3²) = 27x

The coefficient of x in the expansion is 27.

3 0
3 years ago
Other questions:
  • MATH QUESTION!!!!!!!!!!!!!!!!!!!!!!!
    11·2 answers
  • the marked price of a mobile is 40% above the cost price. when it is sold allowing 30% discount on the marked price, there is a
    6·1 answer
  • HELPPP!!!Kelsey uses the similarity statement to describe the triangles below.
    13·2 answers
  • I need help ASAP please.
    8·1 answer
  • Pls help me with this answer part B please​
    13·2 answers
  • Han is cycling at a speed of -8 miles per hour; if he starts at the same zero point, what will his position be after 45 minutes?
    7·1 answer
  • The graph of a proportional relationship contains the point (20, 4).
    12·1 answer
  • I need help its for 7th grade math​
    8·1 answer
  • Which graph represents the solution to the compound inequality?<br><br> –6 &lt; 3x – 12 ≤ 9
    6·1 answer
  • A small rectangular city park has a width of 110 feet and a length of 270 feet. The city wants to make the park larger by adding
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!