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
antiseptic1488 [7]
3 years ago
12

What is x+3y=15 3x+2y=10 URGENT

Mathematics
2 answers:
gregori [183]3 years ago
4 0

Simplifying

2x + 3y = 1

Solving

2x + 3y = 1

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3y' to each side of the equation.

2x + 3y + -3y = 1 + -3y

Combine like terms: 3y + -3y = 0

2x + 0 = 1 + -3y

2x = 1 + -3y

Divide each side by '2'.

x = 0.5 + -1.5y

Simplifying

x = 0.5 + -1.5y

Vladimir79 [104]3 years ago
4 0

Answer:

0,5

Step-by-step explanation:

You might be interested in
Under the Declaration of Independence ordinary citizens have the right to do what and why?
Westkost [7]

Answer:

yes, ordinary netizens have a right to do what they want or what opinion they want to say. Declaration of Indepence is not just for powerful people but also for ordinary netizens in order for them to spek the truth

8 0
3 years ago
[HELP FAST] Write an equation of the line below.
suter [353]

Answer:

y=x-2

Step-by-step explanation:

the line is linear with a slope of 1/1

the y int is -2

plug into y=mx+b

y=x-2

4 0
3 years ago
Read 2 more answers
Find a pair of square numbers which give a difference of 39
nadya68 [22]
64-25=39 All the square numbers are 1,4,9,16,25,36,49,64,81,100
5 0
4 years ago
Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc
Bingel [31]

Answer:

We need a sample size of at least 719

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when M = 0.3, \sigma = 4.103. So

M = z*\frac{\sigma}{\sqrt{n}}

0.3 = 1.96*\frac{4.103}{\sqrt{n}}

0.3\sqrt{n} = 1.96*4.103

\sqrt{n} = \frac{1.96*4.103}{0.3}

(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}

n = 718.57

Rouding up

We need a sample size of at least 719

6 0
3 years ago
Kai wrote the number 85 on the board. Is 85 a prime or composite?
Lesechka [4]
85 is not a prime, it’s a composite number.
7 0
3 years ago
Other questions:
  • Coordinate plane with two lines graphed. The equations of the lines are y equals negative two-thirds x plus four and the other l
    10·1 answer
  • What is the passcode for Horatio's Haunted House? : pls help fast it is due soon
    11·2 answers
  • What are the similarities and differences between the standard form and vertex form of a quadratic equation?
    15·1 answer
  • In a video game, two golfers tee off at hole 6, which has the coordinates (–32, –27). Golfer A’s ball lands at (–43, –18). Golfe
    13·2 answers
  • The center of a circle is at (-5 12) and it has a radius of 16. what is the equation of the circle?
    7·1 answer
  • Pls help<br> Which two values are equivalent to 7^3x 7^-6 ?
    9·1 answer
  • The quadratic function f(x)=-16x^2+90 models the height of a baseball in feet after x seconds. How long is the baseball in the a
    10·1 answer
  • What is 2/5 ÷ 2/3 i need help
    7·2 answers
  • A byte consists of 8 bits. A kilobyte is 2^10 bytes. How many bits are in a kilobyte?
    14·1 answer
  • Refer to the accompanying data set and construct a ​% confidence interval estimate of the mean pulse rate of adult​ females; the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!