pri5ncesskry pri5ncesskry

16-08-2016
Mathematics

contestada

solve the following system of equations: x − 2y = 14 x 3y = 9 a) (1, 12) b) (−1, −12) c) (12, −1) d) (12, 1)

Respuesta :

nobillionaireNobley nobillionaireNobley

20-08-2016

x - 2y = 14 . . . . . (1)
x + 3y = 9 . . . . . (2)

(1) - (2) => -5y = 5
y = 5/-5 = -1

From (1), x - 2(-1) = 14
x + 2 = 14
x = 14 - 2 = 12

Solution is (12, -1)

Answer Link

Otras preguntas

The smallest angle of rotational symmetry for a regular polygon is 30°. How many sides does the regular polygon have?

Which is bigger 1/2 or .39 ??

Consider a neutral atom with 30 protons and 34 neutrons. the atomic number of the element is ________. 30 32 34 64 94

What is the difference between the greenhouse effect and global warming?

What is the coefficient of the term of degree 4 in this polynomial 2x^5+3x^4-x^3+x^2-12 A.4 B.1 C.3 D.2

BEST ANSWER GETS TO BE BRAINLYEST!!!!! Read the following passage from “The Devil and Tom Walker.” From this passage it can be inferred that the colonists livin

if f(x)=-x+7 , what is f(15) f(15) = ?

Why was Joseph Pulitzer a "Robber Baron?"

What kind of molecule is ATP?

why didn't egypt invade nubia during the classical karma period