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
Anna [14]
3 years ago
7

PLEASEEEEEE HELPPPP ASAPPPPPPPPP

Mathematics
1 answer:
KengaRu [80]3 years ago
7 0

Answ

Step-by-step explanation:

You might be interested in
PLEASE HELP!!!!!!!! THANKS!!!!!!!!!
aliina [53]

Answer:

D) There were 176,400 samples of the orchestra music taken every second

Step-by-step explanation:

Just did the test

8 0
3 years ago
Solve the system using substitution. Show all work
kramer

Answer:

x = -2 , y = 3

Step-by-step explanation:

Solve the following system:

{4 x + 5 y = 7

y = 3 x + 9

Hint: | Perform a substitution.

Substitute y = 3 x + 9 into the first equation:

{4 x + 5 (3 x + 9) = 7

y = 3 x + 9

Hint: | Expand the left hand side of the equation 4 x + 5 (3 x + 9) = 7.

4 x + 5 (3 x + 9) = (15 x + 45) + 4 x = 19 x + 45:

{19 x + 45 = 7

y = 3 x + 9

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for x:

{19 x + 45 = 7

y = 3 x + 9

Hint: | Isolate terms with x to the left hand side.

Subtract 45 from both sides:

{19 x = -38

y = 3 x + 9

Hint: | Solve for x.

Divide both sides by 19:

{x = -2

y = 3 x + 9

Hint: | Perform a back substitution.

Substitute x = -2 into the second equation:

Answer:  {x = -2 , y = 3

6 0
3 years ago
the Shanghai maglev train is one of the fastest trains in the world traveling about 2144 miles and 8 hours how many miles does i
rusak2 [61]
It travels 2144 in 8 hours.

Therefore, if you want to find out how many miles it travels in one hour, divide 2144 by 8.

2144 ÷ 8 = 268 miles in one hour. :)
8 0
3 years ago
2. A piece of string 42 centimeters long is cut into 2 unequal pieces. The longer
Vaselesa [24]

Answer: 28 cm

Step-by-step explanation:

x - the length of the shorter piece

2x - the length of the longer piece

Together they are 42 cm long.

Compose te equation:

2x + x = 42

3x = 42

x = 14 cm

The shorter piece is 14 cm, the longer piece is twice longer, 2x, or 2( 14 ).

Two times longer than 14 is 28. The longer piece is 28 cm.

4 0
3 years ago
Which expressions are equivalent when m = 1 and m = 4? 5 m minus 3 and 2 m 5 m 3 m 4 and m 4 2 m 2 m 7 and 3 m minus 3 m 5 m 3 a
emmasim [6.3K]

The expressions that are equivalent when m = 1 and m = 4 is;

Option B: 3m + 4 and m + 4 + 2m

We are given m = 1 and m =4;

A) 5m - 3 and 2m + 5 + m

B) 3m + 4 and m + 4 + 2m

C) 2m + 7 and 3m - 3 + m

D) 5m + 3 and 4m + 2 + 2m

For option B; 3m + 4 and m + 4 + 2m

Let's put m = 1

3(1) + 4 = 7

Also, 1 + 4 + 2(1) = 7

Similarly, let us put 4 for m to get;

3(4) + 4 = 16

Also, 4 + 4 + 2(4) = 16

In both cases, the expressions are equivalent and as such option B is the right one.

Read more about algebra simplifications at; brainly.com/question/4344214

4 0
3 years ago
Read 2 more answers
Other questions:
  • How do I do this I don't understand "11 inches long, 5 inches wide." Aren't those the same things?
    9·2 answers
  • There is a sales tax of $5 on an item that costs $63 before tax. A second item costs $50.40 before tax. What is the sales tax on
    10·1 answer
  • Write a recursive formula for the sequence 7, 4, 1, –2, –5, .... Then find the next term. (1 point) an = an–1 – 3, where a1 = –8
    6·2 answers
  • For all values of x, which expression is equivalent to 2(5 + 8 + 6x)?
    6·1 answer
  • Two angles are supplementary if they add up to ?
    12·2 answers
  • The measures of two adjacent angles have a ratio of 2:3. The sum of the measures of the two adjacent angles is 145. What is the
    14·1 answer
  • Equation:
    8·1 answer
  • Simplify (x power 2 by 5
    6·1 answer
  • Someone please explain the difference of Multiples and Factors as well as an example. ​
    13·1 answer
  • Key Concepts
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!