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
Liula [17]
2 years ago
6

3x-5y=-6 -9x-5y=18 whats the answer

Mathematics
2 answers:
Firlakuza [10]2 years ago
4 0
\left \{ {{3x-5y=-6\ \ | *3} \atop {-9x-5y=18}} \right. \\\\  \left \{ {{9x-15y=-18} \atop {-9x-5y=18}} \right. \\+----\\add\ both\ equations\\\\
-20y=0\ \ \ | divide\ by \ -20\\\\
y=0\\\\
3x-5y=-6\ \ \ \ add\ 5y\\\\
3x=-6+5y\ \ \ | divide\ by\ 3\\\\
x=\frac{-6+5y}{3}=\frac{-6+0}{3}=-2\\\\ x=-2\\ y=0
rodikova [14]2 years ago
3 0
We can eliminate the  y term by multiplying by -1 and adding
-9x-5y=18
multiply -1
9x+5y=-18
add
     3x-5y=-6
  +<u> 9x+5y=-18</u>
     12x+0y=-24
12x=-24
divide by 12
x=-2

subsitute
3(-2)-5y=-6
-6-5y=-6
add 6 to both sides
-5y=0
y=0

x=-2
y=0
You might be interested in
What is the volume of a right cylinder with a base diameter of 6m and a height of 5m
SOVA2 [1]

Answer:

V≈141.37m³

<h2>explanation :</h2>

3 0
3 years ago
PLEASE HURRY!! <br> simplify completely<br> show all work for full credit
Irina18 [472]

Answer:

4x^{3}

Step-by-step explanation:

<u>Given:</u>

(\frac{192x^{12}}{3x^{3}} )^{\frac{1}{3}}

<u>Apply exponent rule of distribution:</u>

\frac{(192x^{12})^{\frac{1}{3}}}{(3x^{3})^{\frac{1}{3}}}

<u>Simplify the numerator:</u>

\\\\\frac{4 * 3^{\frac{1}{3}}x^{4}}{(3x^{3})^{\frac{1}{3}}}

<u>Simplify the denominator:</u>

\\\frac{4 * 3^{\frac{1}{3}}x^{4}}{3^\frac{1}{3}x}}

<u>Simplify:</u>

4x^{3}

-> To explain this party since it is a bigger jump, 3^{\frac{1}{3}}x is on the top and the bottom, so it becomes a one. We are left with a four on the top, and using properties of exponents 4 - 1 = 3, explaining why we have x^{3} leftover too.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

3 0
3 years ago
RS has a midpoint at M(7, 10). Point R is at (8, 10). Find the coordinates of point s.
Elena L [17]

Answer:

S(6, 10)

Step-by-step explanation:

1. The Midpoint (in this case, M) will always be halfway between both R and S (or other characters in some cases).

2. As M is only one X value away from R, it is only 1 X value from S as well, but in the other direction.

3. (7, 10) - (1, 0) = (6, 10)

The (7, 10) is the Midpoint Coordinates.

The (1, 0) is the distance from M to R.

The (6, 10) is the coordinates of S.

5 0
3 years ago
2 yards and 60 inches in ratio
arsen [322]

2yrds:60in    is the answer


8 0
3 years ago
The value of Rita’s house increased by 5%.
Svetach [21]

Answer:

200,000

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • A European automobile has a gas mileage of 16km/L .. What is the gas mileage in miles per gallon?. Express your answer using two
    5·1 answer
  • 3x+y=W<br><br><br><br> Solve for X....
    15·1 answer
  • Kaya had a string 6 1/8 in. long. She cut off a piece 2 ¾ in. long. How
    9·2 answers
  • How do you simplify, distribute and combine like terms?
    9·1 answer
  • Factor 7x^4 - 63<br><br>please I can't afford to fail my homework
    8·1 answer
  • ??????????????????????
    6·1 answer
  • 11. Which of the following points is on the
    9·1 answer
  • A school earns $70 from se ing 50 tickets for the school play. Each ticket costs the same price.
    9·1 answer
  • What is the area of the figure <br> A 234 in<br> B 315 in <br> C 225 in <br> D 252 in
    12·1 answer
  • Side lengths of triangle : 6cm, 12cm, and 7cm. Do these make a unique triangle, more than one triangle, or no triangle
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!