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Ede4ka [16]
2 years ago
12

X+2y=0 3x+4y=4 find the solution

Mathematics
1 answer:
Nady [450]2 years ago
4 0

Answer:

  (x, y) = (4, -2)

Step-by-step explanation:

The coefficient of y in the second equation is double the coefficient of y in the first. We can subtract twice the first equation from the second to eliminate y.

  (3x +4) -2(x +2y) = (4) -2(0)

  x = 4 . . . . . . . . . simplify

Substituting into the first equation, we have ...

  4 +2y = 0

  2 +y = 0 . . . . . . divide by 2

  y = -2 . . . . . . . . subtract 2

The solution is (x, y) = (4, -2).

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The least common multiple of two numbers is 40. The difference of the two numbers is 2.
Ulleksa [173]
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. So therefore, the numbers would be 2 and 4.
8 0
3 years ago
(2) 345
inessss [21]

Answer:

275 miles in 5 hours

55 miles in one hour

Check

to check if im right

275×2 would be how many miles she drove in 10 hours rght ? 275×2=550

550 miles in 10 hours

we know one hour is 55 miles & 5 hours is 275 & 10 hours is 550

10 hours plus 3 hours = 13 hours right ?

55 ×3 = 165

550 +165=715

715 miles in 13 hours

Step-by-step explanation:

715÷13 to get how many miles she drove in one hour .

=55 miles in 1 hour .

then multiply 55 ×5 to get how many miles she drove in 5 hours

55×5=275

275 miles in 5 hours

5 0
3 years ago
The linear equation when b= 5 and m = -2 is O y = 5x – 2. Oy= 5x + 2. y = -2x - 5. O y = -2x + 5​
blondinia [14]

Answer:

y = -2x + 5

General Formulas and Concepts:

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define given</u>

y-intercept <em>b</em> = 5

Slope <em>m</em> = -2

<u>Step 2: Write function</u>

y = -2x + 5

5 0
3 years ago
Another way to group 6x(2x2) ?
Alex73 [517]
6x{2x2} is a good way
8 0
3 years ago
Read 2 more answers
Please help me I’ll give brainliest! ://
Karo-lina-s [1.5K]

Answer:

The answer would be -10x-9

4 0
3 years ago
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