Answer:
Step-by-step explanation:
Let x represent the speed of the slower plane. The faster plane's speed is then x+40. The sum of speeds is ...
x + (x+40) = 1180
2x = 1140 . . . . subtract 40
x = 570 . . . . . .divide by 2
x+40 = 610 . . . . the speed of the faster plane
The two speeds are 570 mph and 610 mph.
Since irrational numbers go on forever, no matter how much you add or multiply rational numbers, irrational numbers remain irrational.
Answer:
x=4
Step-by-step explanation:
first lets move it over
3x = 12
x=4
check:
14*4 = 56
-5 =
51
7+ 11x=
11*4 = 44
44+7 = 51
51 = 51
hope this helps :D
3,100= 1,900 +84x
right since 84 months in 7 years
so 14.3% right?
