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
Tanzania [10]
3 years ago
15

2x+5y=4 2x-2y=18 using the method of elimination

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
8 0

Answer:

Equation Form:

x=7,y=−2

Step-by-step explanation:

Multiply each equation by the value that makes the coefficients of x

opposite.

(−1)⋅(2x+5y)=(−1)(4)

2x−2y=18

Simplify.

−2x−5y=−4

2x−2y=18

Add the two equations together to eliminate x

from the system.

(−2x−5y=−4) +(2x−2y=18) = (-7y=14)

Divide each term by −7 and simplify.

y=−2

Substitute the value found for y into one of the original equations, then solve for x.

x=7

The solution to the independent system of equations can be represented as a point. (7,−2)

The result can be shown in multiple forms.

Point Form:

(7,−2)

Equation Form:

x=7,y=−2

You might be interested in
The perimeter of XYZ is ___ units.
In-s [12.5K]

Look at the picture.

ZY = 5+3=8

For XY and ZX use the Pythagorean theorem.

XY^2=3^2+4^2\\\\XY^2=9+16\\\\XY^2=25\to XY=\sqrt{25}\\\\XY=5

ZX^2=5^2+4^2\\\\ZX^2=25+16\\\\ZX^2=41\to ZX=\sqrt{41}

The perimetero fo XYZ:

P_{\triangle XYZ}=8+5+\sqrt{41}=\boxed{13+\sqrt{41}}

7 0
3 years ago
Jada has time on the weekends to earn some money. A local bookstore is looking for someone to help sort books and will pay $12.2
coldgirl [10]
Y= hx + ex ) x is the number of days jada has worked
3 0
2 years ago
Please help with this
klemol [59]

Answer:

(h+k)(2)=4+1+2-2=5

(h-k)(3)=9+1-3-2=3+1-1=9

3h2+2k3=3*5+2=17

7 0
3 years ago
Equation of line M is Y=5/8x+1 . Line N is perpendicular to M. What is the slope of line N?
jasenka [17]

Answer:

To be honest just think there´s no right or wrong answer (Hope i helped you Alot)

Step-by-step explanation:

7 0
3 years ago
If AB=5 and BC =10 is it possible that AC=4
son4ous [18]
Yes depending on if ur talking about a triangle of not
8 0
3 years ago
Other questions:
  • A population of 510,000 toads is expected to shrink at a rate of 6.2% per year. Which is the best prediction for the toad popula
    6·2 answers
  • You have just shipped 26 reels of electrical wire. Each reel has 20,000 feet of wire. The price of the wire is $0.05 per foot. W
    5·2 answers
  • Can u guys help me with the blank space what's the answer!?
    13·2 answers
  • Determine the image of the point (1, 5) under a rotation of 180° about the origin
    14·1 answer
  • Question 5<br> » Solve for n.<br> 2/3(1+n)=-1/2n
    13·1 answer
  • F(x) = −16(x − 4)<br> + 255 <br><br> What is the value of f(x) when x = 5?
    7·1 answer
  • Identify the base in this statement:<br> 16% of 98 is 15.68
    12·1 answer
  • Slope: -1 intercept: -7.9
    14·2 answers
  • Matt decides the length of his table will be 15 in. He calculates that the area of the table is 30 in. squared. Determine if Mat
    13·1 answer
  • When the product of 15 and 40 is diveded by the sum of 15 and 45 what is the quotient​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!