Answer:
x = 9
Step-by-step explanation:
2 sides are 4 less than x, that is x - 4
The perimeter is the sum of all 3 sides, thus
x + x - 4 + x - 4 = 19, that is
3x - 8 = 19 ( add 8 to both sides )
3x = 27 ( divide both sides by 3 )
x = 9
2L +2W=160
100+ 2W=160
subtract 100 from each side
2W=60
divide by two each side
W=30
use the formula L×W=Area or 50×30 which equals 150 the are of the pasture is 150 feet²
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Answer:
Students did not watch either game = 10
Step-by-step explanation:
Total no. of students = 100
Students watched the Super Bowl = 85
Students watched the Stanley Cup = 25
Students watched both games = 20
Students did not watch either game = ( Total no. of students ) - ( Students watched the Super Bowl ) + ( Students watched the Stanley Cup ) - ( Students watched both games )
Students did not watch either game = 100 - (85 + 25 - 20)
Students did not watch either game = 100 - 90
Students did not watch either game = 10
f(x)= -8x+4 to find the inverse replace f(x) with y and solve for x
y= -8x +4
y-4=-8x
x= - (y-4)/8
So you replace now x with f^-1(x) and y with x to get the answer:
f^-1(x)= - (x-4)/8