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
Natalka [10]
3 years ago
12

12x−5y=−20 y=x+4 x=x=x, equals y=y=y, equals

Mathematics
1 answer:
aksik [14]3 years ago
8 0

Answer:

The solution is (0, 4)

Step-by-step explanation:

Please pay attention to the first two equations and drop the last two:

12x−5y=−20 y=x+4 x=x=x, equals y=y=y   should ideally be:

12x−5y=−20

y=x+4

Let's find x.  Substitute x + 4 for y in the first equation, obtaining:

12x - 5(x + 4) = -20

Carrying out the indicated multiplication, we get:

12x - 5x - 20 = -20, or 7x = 0

If x = 0 then y must be 0 + 4, or 4.  

The solution is (0, 4)

You might be interested in
...................................................
snow_lady [41]

Answer:

3x + 2 = 59

Step-by-step explanation:

because the total is 59 so is definetly =59

and no of oranges in bag so there are 3 bags it means its 3x so the equation is 3x + 2 = 59

Hope it will help you

Lots of love from nepal <3 :)

5 0
3 years ago
What is the exact length of AB
Tatiana [17]

We have the formula S= r * theta , where S is arc length , r is radius , and theta is central angle in radians

So AB= 4 * 45* π/180 = π units

6 0
3 years ago
Read 2 more answers
Which answer is the approximate standard deviation of the data set?
Anna35 [415]

Answer:

3.4

Step-by-step explanation:

Standard deviation of a population is defined as:

σ² = ∑(xᵢ − μ)² / n

The standard deviation of a sample is defined as:

s² = ∑(xᵢ − x)² / (n - 1)

It's not clear which one we have, so let's calculate both.

First, we must find the mean.

μ = (5+12+15+10+12+6+8+8) / 8

μ = 9.5

Now we find the squares of the differences:

(5-9.5)² + (12-9.5)² + (15-9.5)² + (10-9.5)² + (12-9.5)² + (6-9.5)² + (8-9.5)² + (8-9.5)²

= 80

Divide by n:

σ² = 80 / 8

σ² = 10

And take the square root:

σ = √10

σ ≈ 3.2

That's not one of the answers, so let's try the standard deviation of a sample instead of a population.

Instead of dividing by n, we'll divide by n-1:

s² = 80 / 7

And take the square root:

s = √(80/7)

s ≈ 3.4

So that must be it.

6 0
3 years ago
The equation y=ax describes the graph of a line.if the value of a is positive,the line
ahrayia [7]
If the value of a is positive, the line slopes upwards.
5 0
3 years ago
Read 2 more answers
The width of a plant cell is approximately 0.00001276 meter. Use scientific notation to write the width of the plant cell. NEED
Ilya [14]
It would be 1.276 x 10(5) the exponent is 5 next to the 10
6 0
3 years ago
Other questions:
  • Find the sun of 5 ,-7 A.-2 B 12 c-35 D 2
    9·1 answer
  • An animal shelter spends $5.50 per day to care for each bird and $8.50 per day to care for each cat. Nicole noticed that the she
    13·1 answer
  • Whole numbers greater than 10 but less than 20
    5·2 answers
  • Using the letter n to represent a number, express
    11·1 answer
  • What is the equation of the line?<br> y=3x<br> Y=1/3x<br> Y=1/3x+2<br> Y=3x+2
    9·2 answers
  • Solve the iniquality 6x - 8 &gt; 4x + 26
    5·2 answers
  • 25,550 ÷ ___________ = 0.25550
    14·1 answer
  • Angles a and b are complementary angles symmetry of angle a is 28° more than the measure of angle b find the missing angle measu
    7·1 answer
  • PLEASE HELP I REALLY NEED HELP
    5·2 answers
  • ..The total of Joshua's savings and $350 is $925.<br><br><br> Please help
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!