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
zhenek [66]
3 years ago
8

4x – y = 7 3y – 12x = –21

Mathematics
2 answers:
Elis [28]3 years ago
6 0

Answer:

y= 4x − 7 or 0=0

Step-by-step explanation:

4x−y+−4x=7+−4x

meriva3 years ago
3 0
The answer is y=4x-7
You might be interested in
Carmen is a professor at a local university. In collecting data on her Introduction to Business course for a year, she wants to
AVprozaik [17]

Answer:

\boxed {\boxed {\sf z=2.2}}

Step-by-step explanation:

The z-score tells us how many standard deviations a value is away from the mean.

The formula is:

z=\frac{x- \overline{x}}{s}

where x is the value, \overline {x} is the mean, and s is the standard deviation.

We want to find the z-score for the score of an 83, the mean is 72, and the standard deviation is 5.

x=83 \\\overline {x}= 72 \\s=5

Substitute the values into the formula.

z=\frac{83-72}{5}

Solve the numerator.

z=\frac{11}{5}

Divide.

z=2.2

The z-score is 2.2, which means the score of 83 is 2.2 standard deviations above the mean.

3 0
3 years ago
Each side of a cube measures 5 cm in length. What is the cubes volume?
AysviL [449]

____________________________________________________

Answer:

Your answer would be 125 cm³

____________________________________________________

Step-by-step explanation:

In order to find the volume of a cube, we would need to use the right formula to find the volume for it.

Volume of a cube formula:

V = a^{3}

For our "a" value, we would need to plug in our side value, and for you case, the side value would be 5.

In a cube, all of the sides would be the same size, so you don't have to worry about using any different numbers.

Lets plug in 5 to our equation.

V = 5^{3}

Now we solve:

5^{3} = 125\\

This is also the same as:

5 *5*5 = 125

Your FINAL answer should be 125 cm³

____________________________________________________

8 0
3 years ago
Read 2 more answers
What is the solution for
sveticcg [70]

Answer:

The answer is letter B.

8 0
3 years ago
Read 2 more answers
We can use the formula, density = mass over volume, to find the density of a substance. A square metal plate has a density of 10
mash [69]

Answer:

2.15cm^3

Step-by-step explanation:

V = Mass / Density

21.93g / 10.2g/cm^3

2.15cm^3

3 0
3 years ago
Please answer correctly !!!! Will mark brianliest !!!!!!
mr Goodwill [35]

Answer:

-3x-5 x-4 I this work good luck

6 0
3 years ago
Read 2 more answers
Other questions:
  • Write a sentence that compares the value of the 9s in 199,204.
    5·1 answer
  • What is the heroes formula?
    9·1 answer
  • What is the answer for the picture that is linked below?
    12·1 answer
  • Kate gave 5/6 of her CD's to Sue
    7·1 answer
  • Which of the following r one dimensional figures?
    13·1 answer
  • This is a 2 answer question
    11·1 answer
  • The circumference of the<br> circle shown is 62.8 inches,<br> what is the circle's<br> diameter?
    5·1 answer
  • What is the inverse of the function y = 2x + 3?
    11·2 answers
  • HELP NEEDED ASAP! GIVING BRAINLIEST
    10·2 answers
  • An engineer stands 30 ft. from a building and notes a 55 degree angle of elevation to the top of the building. How high is the b
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!