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
user100 [1]
3 years ago
6

5x+6y=13;-5x+2y=11. how do I solve this

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0
You solve for X in one equation and plug it into the other. So... 

<span>5x+6Y=13 </span>
<span>5x=13-6Y </span>
<span>x=(13-6Y)/5 </span>

<span>Then, you replace X in the other equation... </span>

<span>-5x+2y=11 </span>
<span>-5[(13-6y)/5]+2y=11 </span>
<span>-13+6y+2y=11 </span>
<span>8y=11+13 </span>
<span>8y=24 </span>
<span>y=3 </span>

<span>Now that you have Y, you just solve for x using either equations... </span>

<span>5x+6(3)=13 </span>
<span>5x=13-18 </span>
<span>5x=-5 </span>
<span>x=-1 </span>

<span>Therefore, X = -1 & Y = 3

</span>
You might be interested in
Write expressions for 4 consecuative integers.
gogolik [260]
Y=33x + 104 -(45+66).......
6 0
3 years ago
What is 35% of 60? I need it for studying
seraphim [82]
35% of 60 is 21. Hope this helped!

8 0
3 years ago
Read 2 more answers
Whats 9+12 i need help please help me
Anuta_ua [19.1K]

Answer:

21

Step-by-step explanation:

bc

1

12

9

+--

21

4 0
3 years ago
Read 2 more answers
Someone help me solve this please…
azamat

Answer:

x=5.5

Step-by-step explanation:

Perimeter of ABCD=85

The perimeter is everything around the outside added together.

Form an equation:

3x+4+4x+6x-11+5x-7=85

Collect the like terms:

Like terms are terms that have the same powers and coefficient.

3x+4x+6x+5x=18x

4-11-7= -14

Put it back into an equation:

18x-14=85

Do inverse operations to find out what x is:

85+14=99

18x=99

99÷18=5.5 (we divide because, in algebra, when a number is next to a letter, it means times and as we want the inverse, you would have to divide)

x=5.5

Hope this helps :)

3 0
3 years ago
Which sample is better for making a prediction? Explain. Sample A: A random sample of 10 customers leaving a store Sample B: A r
andrezito [222]

Answer: Sample B: A random sample of 100 customers leaving a store

Step-by-step explanation: In mathematics and especially when gathering data, you will gather the most accurate results with a larger portion. The larger portion will ensure a more accurate reading.

3 0
2 years ago
Other questions:
  • A, B and C form the vertices of a triangle. BC = 6.9cm and ∠ CBA = 137°. Given that the area of the triangle is 12.6cm^2, calcul
    13·1 answer
  • Find the next term for the given sequence.52, 45, 38, 31
    15·1 answer
  • Esther cut a square paper vertically to make two rectangle pieces. Each rectangle had a perimeter of 63 inches.
    14·1 answer
  • A moon's physical diameter is about 3800.0 km, and its orbital distance from its planet varies between 360,000 km and 430000.0 k
    5·1 answer
  • FIND THE RATIONALIZING FACTOR OF THE FOLLOWING:<br><br><br>1)√ 2-√ 3 <br><br> 2)√ 12
    12·1 answer
  • Anybody? help me out, please
    10·1 answer
  • Last question. 50 points!​
    14·2 answers
  • an ice cream factory makes 330 quarts of Ice cream in 2 hours how many quarts could be made in 36 hours what was the rate per da
    7·2 answers
  • can you find the lengths and area and type the correct code? Please remember to type in all caps with no space​
    5·2 answers
  • All the corners of the shape are right angles. The perimeter of the shape is 28 m. Work out the area of ABCE.​​​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!