Answer:
Step-by-step explanation:
Ac²= AB²+ BC²
Ac²= 4²+15²= 16+225
Square both side
Ac = √241= 15.52cm
2x + 3y = 630
x + y = 245 then you want to get rid of x so in the second equation × by -2 and get -2x -2y =-490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x= $105 and 2x=210 and 3y=420 210 +420=630
Answer:
One pair of socks is $370.
Step-by-step explanation:
Sean bought <em>three pairs</em> of the same socks and a shoe polish for $1450. If the
polish cost $340, how much is the cost of <em>one pair</em> of socks.
6x - 340 = 1450
6x = 1450 -340
6x = 1110
2x = 1110 / 3
2x = 370
