Answer:
- minimum: 6.75 km²
- maximum: 13.75 km²
Step-by-step explanation:
Such questions generally arise in the context of measurement precision and/or accuracy. Apparently, we're to assume that these dimensions could be arrived at by rounding to the nearest km. In that case, they can be taken to have a possible error of ±0.5 km.
The minimum possible area is the product of the minimum possible dimensions: 1.5 km by 4.5 km = 6.75 km².
The maximum possible area is the product of the maximum possible dimensions: 2.5 km by 5.5 km = 13.75 km².
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<em>Comment on combining measurement values</em>
You will note that the nominal area is 2 km by 5 km = 10 km², and that the middle value between the minimum and maximum is slightly more than this, at 10.25 km².
It is typically the case that when measurements are combined by operations other than addition and subtraction, the nominal result is different from the middle result in the range of possibilities.
Answer:
y=3x+4/5
Step-by-step explanation:
y-4+4=3x+5y+4
y=3x+5y+4
5y/5=3x+4/5
y=3x+4 over 5
Ax^2+bx+c=0
a=2
b=-1
c=-3
b+-sqrt( b^2 - 4ac)
2a
so...
-1 +- sqrt(1 + 24)
4
-1 +- 5
4
x= -1 + 5 = 1
4
or
x= -1 - 5 = -3/2
4
1-(-3)=4 slope= -4
4-5 =-1
y-y1=m(×-×1)
y-(-1)=-4(x-(-4))
y-(-1)=-4x+16
+1. +1
y= -4x+17
I hope it serves you