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
Milo’s piano class starts in 1 hour 15 minutes. Right now it is 2:45. What time does his class start?
Stella [2.4K]

Answer:

So let's think about it

Time start: 2:45

complete the hour you get 3:00

and add an hour you get 4:00

So the hour is 4:00

8 0
3 years ago
This trapezoid is made up of two right triangles and one rectangle.
artcher [175]

9514 1404 393

Answer:

  • each triangle: 29.75 in²
  • rectangle: 374 in²
  • total area: 433.5 in²

Step-by-step explanation:

The base of each triangle is half the difference between the bases of the trapezoid:

  (29 in -22 in)/2 = 7 in/2 = 3.5 in

The area of the triangle is given by the formula ...

  A = 1/2bh

  A = 1/2(3.5 in)(17 in) = 29.75 in² . . . triangle area

__

The area of the central rectangle is the product of its base and height.

  A = bh = (22 in)(17 in) = 374 in² . . . rectangle area

__

The total area of the trapezoid is the sum of the areas of the two triangles and the area of the rectangle.

  total area = 2(29.75 in²) + 374 in² = 433.5 in² . . . total trapezoid area

5 0
3 years ago
Joel is considering putting a $
olganol [36]

Answer: $53.84

Step-by-step explanation: 3500 divided buy 65

6 0
3 years ago
What number is the arrow pointing at?<br> 1<br> 2<br> 3
ehidna [41]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Miss McGrew is making stools for her first graders to use during story time. To make the stools, she covers wooden cubes with ca
Naddika [18.5K]

Answer:

9600 square cm

Answer choice 3

Step-by-step explanation:

We need to find the surface area of the cube.

We need to find 6(40×40)

=6(1600)

=9600

9600 square cm

<h2><u><em>PLEASE MARK BRAINLIEST</em></u></h2>
5 0
1 year ago
Other questions:
  • Phil is paid £240 per week.
    11·1 answer
  • How many subsets of 1,2,3,4,6,8,10,15 are there for which the sum of the elements is 15
    15·1 answer
  • 2(X×6)Better Or Equal To 3
    8·1 answer
  • What are the terms in this expression? 350n - 30n + 350 - (50+10n)
    14·1 answer
  • Your friend is in Death Valley, California, at an elevation of -282 feet. You are near Mississippi River in Illinois at an eleva
    5·2 answers
  • The ratio of men to women at a class is 6 to 5. How many women students are there if there are 3600 men?
    12·1 answer
  • If RS = 33.6 and QS = 79, find QR.
    14·2 answers
  • 2. The rectangular prisms shown below are
    7·1 answer
  • I need the Answer to number 10. (sorry about my fingers being in the way)
    10·1 answer
  • NEED HELP QUICK WILL GIVE OUT 30 POINTS
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!