manclaudie manclaudie

01-06-2016
Mathematics

contestada

Two equations are given below:

a − 3b = 4
a = b − 2

What is the solution to the set of equations in the form (a, b)?

(−2, −2)

(−3, −1)

(−9, −7)

(−5, −3)

Respuesta :

02-06-2016

Hello,

a-3b=4 (1)
a-b=-2 (2)

(1)-(2)==> -2b=6
=>b=-3 and a=-2+(-3)=-5

Answer D

Proof
-5+3=-2
-5-3(-3)=4

Answer Link

Otras preguntas

If f(x)=x-1/3and g(x)=3x+1, what is (f o g)(x)? 3x + 1 x – 3 3x x

Inertia is the resistance to change in motion so inertia depends solely on what

all of the following will help a person be successfull in his or her fitness plan except

If a roof's slope is 0.5, how high will the roof rise over a 17-foot run?a). 8 1/2 feetb). 17feetc). 1/34 feetd). 34 feet

Which describes the structure of this sentence? Ships and boats dotted the harbor and sailed toward the docks. A.complex B.compound C.simple D.compound-complex

please help me with 6

what is the original source of energy used during photosynthesis

what is 9×9 please help me

Can you please answer this question? Thank you

how are igneous rocks formed? A. compaction and cementation of sediments B. cooling and solidification of magma C. weathering of rocks D. application of pressur