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
guapka [62]
2 years ago
9

WILL GIVE BRAINLIEST. If x+y=3 and 3x+5y=13, then x-y is equal to?

Mathematics
1 answer:
Alex17521 [72]2 years ago
6 0

Answer:

(1,2)

y=2

x=1

Step-by-step explanation:

x+y=3

3x+5y=13

solve the equation

x=3-y

3x+5y=13

substitute the value of x into an equation

3(3-y)+5y=13

distribute

9-3y+5y=13

add -3y to 5y

9+2y=13

subtract 9 from both sides

2y=4

divide both sides by 2

y=2

substitute the value of y into an equation

x=3-2

subtract 3 to 2

x=1

--------

(1,2)

--------

You might be interested in
Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0
Reika [66]

Answer: x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}

Step-by-step explanation:

25x^2-30x+25=0

x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}

\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}

=\sqrt{30^2-4\cdot \:25\cdot \:25}

=\sqrt{30^2-2500}

=i\sqrt{2500-30^2}

=40i

x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}

x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}

x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}

8 0
2 years ago
Two ships leave a harbor together traveling
Andrew [12]

Answer:

use cosine law

x^2 = 543^2 + 543^2 - 2(543)(543cos 128°

solve for x

Step-by-step explanation:

5 0
2 years ago
The area of a square can be represented by the expression x10. The side of the square can be written in the form xn.
Valentin [98]

The complete answer

The answer is 5


4 0
2 years ago
Read 2 more answers
At the end of a film, the year is given in Roman numerals.
dem82 [27]

Answer:

MMVI=2006 M MEANS 1000 AND ONE MORE M MEANS 1000 TOTAL 2000 THEN VI IS THE NUMBER SIX 6

5 0
3 years ago
Read 2 more answers
A local road rises 14 feet for every 472 feet of highway. What is the slope of the highway?
masya89 [10]
Positive 14/472 (because of rise over run when finding slope)
5 0
3 years ago
Read 2 more answers
Other questions:
  • Am I finding the area of this wierd shape correctly if not what am I doing wrong?
    10·1 answer
  • A circular pond has a radius of 3 feet. What is the approximate distance around the edge of the pond?
    15·2 answers
  • Find the slope of the line through the points (4,-5) and (6,-5). Is the line horizontal, vertical,
    7·1 answer
  • All dogs are warm-blooded.
    7·1 answer
  • Use long to divide 34298 by 26 then select the true statement the quotient has a remainder of 4 the quotient has a remainder of
    5·1 answer
  • Help me!!<br> solve for d
    9·1 answer
  • What percent of 50 is 9?<br> O<br> A. 4.5%<br> O B. 5.6%<br> OC. 9%<br> O D. 18%<br> O E. 45%
    8·2 answers
  • Se han gastado 5/9 de la capacidad de un depósito u aun quedan 108L. Cuál es la capacidad del depósito?
    9·1 answer
  • IF U ANSWER THIS U ARE SWAG!!!
    6·2 answers
  • Consider the following graph
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!