Answer:
let the two number be x and y then,
x+y=12
x-y=-4
-----------
2x=8
or, x = 4 put the value of x in first equation
4+y= 12
or, y=12-4
or, y= 8 hence the two number is 4 and 8
X=3 Should be the answer If you ser 2x-3=5x-12
-2x -2x
-3=3x-12
+12 +12
9=3x
3=x
172/387 = 4/t
Let t = time to travel 387 miles
172t = 4(387)
172t = 1548
t = 1548/172
t = 9
Answer: 9 hours
Answer:
18550cm²
Step-by-step explanation:
140×110=15400
½×70×90=3150
15400+3150=18550
Answer:
A. 520 square inches is your surface area of the rectangular prism
