If 3m+2n=16 and m−2n=0, then what is the value of m?

m= 4

Step-by-step explanation:

3m +2n= 16 (1)

m -2n= 0 (2)

From (2):

m= 2n (3) (+2n on both sides)

subst. (3) into (1):

3(2n) +2n= 16

6n +2n= 16

8n= 16 (simplify)

n= 16 ÷8

n= 2

subst. n=2 into (3):

m= 2(2)

m= 4

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation:

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2