Plz help with 1 math question. Will rate brainliest!!!

Mathematics

1 answer:

marissa [1.9K]3 years ago

8 0

Answer:

x: 4
y: 3

Step-by-step explanation:

Whenever one of the equations gives an expression for one of the variables, it is useful to use that expression to substitute into the other equation.

Using the expression for y and substituting into the second equation, we have ...

3x -5(2 +1/4x) = -3

3x -10 -5/4x = -3 . . . . . . eliminate parentheses

7/4x = 7 . . . . . . . . . . . . . add 10, collect terms

x = 4 . . . . . . . . . . . . . . . . .multiply by 4/7

y = 2 + (1/4)(4) = 3

The solution is (x, y) = (4, 3).

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What is the distance from (-4, -7) to (4, 8) ?