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
Westkost [7]
3 years ago
10

4x + 3y = 22 5x - 4y = 43 Simultaneous Equation

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
4 0

Answer:

x = 7

y = -2

Step-by-step explanation:

4x + 3y = 22  ---------------------(I)

5x - 4y = 43 ---------------------(II)

Multiply(I) by 4 and equation (II) by 3. And then add the equations

(I) * 4            16x + 12y = 88

(II) *3            <u>15x  - 12y = 129</u>   {Add & thus y will be eliminated}

                    31x         = 217

x = 217/31  

x = 7

Plug in the value of x in equation (I)

4*7 + 3y = 22

28 + 3y = 22

       3y = 22 - 28

       3y = -6

         y = -6/3

y = -2

You might be interested in
What is the translation of the point to its image? A (−1, 4)→ A' (3, 3)
Gala2k [10]

Answer:

We validate that the formula to determine the translation of the point to its image will be:

A (x, y) → A' (x+4, y-1)

Step-by-step explanation:

Given

A (−1, 4)→ A' (3, 3)

Here:

  • A(-1, 4) is the original point
  • A'(3, 3) is the image of A

We need to determine which translation operation brings the coordinates of the image A'(3, 3).

If we closely observe the coordinates of the image A' (3, 3), it is clear the image coordinates can be determined by adding 4 units to the x-coordinate and subtracting 1 unit to the y-coordinate.

Thue, the rule of the translation will be:

A(x, y) → A' (x+4, y-1)

Let us check whether this translation rule validates the image coordinates.

A (x, y) → A' (x+4, y-1)

Given that A(-1, 4), so

A (-1, 4) → A' (-1+4, 4-1) = A' (3, 3)

Therefore, we validate that the formula to determine the translation of the point to its image will be:

A (x, y) → A' (x+4, y-1)

6 0
3 years ago
Y = 3x do this fast plz
mash [69]

Answer:

Step-by-step explanation:

3 0
2 years ago
ASAP PLZ!!!
lyudmila [28]

The solution has to be a value of x. Since you already have x, you just have to plug in the value and see what fits. In this case thats the third from the top:

5^2 - 10*5 + 25 = 0

25 - 50 + 25 = 0

0 = 0

Hope it helps!

7 0
3 years ago
∠K and ∠L are complementary angles. If m∠K = 3x + 3 and m∠L = 10x – 4, find the measures of both angles.
Oduvanchick [21]

Answer:

∠K =24

∠L =66

Step-by-step explanation:

first you need to find X in order to solve.

since they are Complementary they add together to equal 90 degrees

so we can set them equal to 90

13x-1=90

13x=91

x=7

now we can plug them in!

---

∠K = 3(7)+3 = 24

∠L =10(7)-4=66

4 0
3 years ago
Help. Me. Please. Pt1
sergejj [24]

Answer:

A

Step-by-step explanation:

X<Y means x is less than y-5 and you get A.

5 0
2 years ago
Read 2 more answers
Other questions:
  • 419% of what number is 33.52
    7·1 answer
  • Need help on this question
    5·1 answer
  • What is a common factor of both x^2-9 and x^2+x-6
    8·1 answer
  • PLEASE HELP TIMED
    6·2 answers
  • Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15
    10·2 answers
  • Use algebra ,What number exceeds y by 4 less than x?
    6·1 answer
  • A train travels 2 1/2 miles in 1/3 of an hour. How many miles per hour does the train go?
    8·1 answer
  • If you take 7 cards frim a deck of 52 cards, how many cards do you have?
    13·1 answer
  • Please help!! I am literally in tears!!
    6·1 answer
  • On Friday night, Suzie babysat her cousin for 3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!