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
VladimirAG [237]
4 years ago
14

Solve these simultaneous equations Using the algerbraic method

Mathematics
1 answer:
kherson [118]4 years ago
4 0
The second equation equals: 3X +18y=60 (Both sides times 3)
And then use this new equation minus the first equation, you will get:
Left side: (3X +18y) - (<span>3x+6y)
Right side: 60-30
So 12y=30
Then y=2.5
Take y value into one of the three equations, you will get x=5

or

in another easier way:

Directly minus the second equation from the first one:
</span>(3x+6y) -(<span>X+6y)=10
</span>2X = 10
X = 5
Get Y is easy, Y=2.5
You might be interested in
Construct a 60° angle
yan [13]
<h2>To construct a 60° angle, we first draw a line of any length. Then using a compass, we use this as a base to construct an equilateral triangle.</h2><h2>To construct the equilateral triangle, we:</h2><h2 /><h2>open the compass to the same dimensions as our original line</h2><h2>place the point of the compass on one end of the line and draw an arc</h2><h2>repeat this at the other end and the arcs should intersect where the tip of the triangle should be</h2><h2>Connect the tip of the triangle to one end of the base, and you will have a 60° angle.</h2><h2 />

6 0
3 years ago
Read 2 more answers
Please help this is due tosay
mash [69]
I circled the answers for you!
7 0
3 years ago
A television screen is a rectangle 44 inches wide and 24 inches long. A television size is advertised as the length of its diago
Mars2501 [29]

Answer:

50 inches Approx

Step-by-step explanation:

GIven data

Width= 44in

Length= 24in

Diagonal=???

We know that the expression for the diagonal is given as

D^2= W^2+L^2

substitute

D^2= 44^2+24^2

D^2= 1936+576

D^2= 2512

D=√2512

D= 50.11

Hence the size of the TV is 50 inches Approx

8 0
3 years ago
-4x-16=2x+2 does anyone know what this would be
kap26 [50]

Answer:

-3

Step-by-step explanation:

-4x-16=2x+2

-4x-2x= 16+2

-6x = 18

x = 18/-6 = -3

I hope im right!!

4 0
3 years ago
Read 2 more answers
Find m∠X. Put the answer below.<br> m∠X =
tia_tia [17]
This is a 90-60-30 triangle so the angle is 30 degrees.
3 0
3 years ago
Other questions:
  • I need help on how to do Angle Relationships.
    12·1 answer
  • Each year the soccer team, Peterson United, plays 25 games at their stadium. The owner of Peterson United claimed that last year
    5·2 answers
  • How are the numbers 21 and 2,100 alike?
    12·2 answers
  • Plz help with this plz it is due today and i really wanna get a good grade on this plz try and dont guess
    6·1 answer
  • Slope-intercept of (2,3), (4,-1)
    10·1 answer
  • Two ships leave a harbor at the same time. One ship travels on a bearing S11°W at 14 miles per hour. The other ship travels on a
    13·2 answers
  • How to express each of the following pairs of
    14·1 answer
  • B. ¿Qué fracción representa el total de sillas ocupadas durante los tres días?
    8·1 answer
  • Geometry skew lines!! Need help thank you ☺️
    6·1 answer
  • In the third month of a study, a sugar maple tree is 82 inches tall. In the seventh month, the tree is 92 inches tall. Assuming
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!