9514 1404 393
Answer:
- DE ≈ 9.49, EF ≈ 8.06, FD ≈ 14.87
- obtuse scalene triangle
Step-by-step explanation:
For finding side lengths, it is convenient to work with the differences of the coordinates.
DE = E(-1, -3) -D(8, -6) = (-9, 3)
EF = F(-2, 5) -E(-1, -3) = (-1, 8)
FD = D(8, -6) -F(-2, 5) = (10, -11)
Then the lengths are ...
DE = √((-9)² +3²) = √90 = 3√10 ≈ 9.49
EF = √((-1)² +8²) = √65 ≈ 8.06
FD = √(10² +(-11)²) = √221 ≈ 14.87
The lengths are all different and the largest angle is obviously more than 90°, so the triangle is an obtuse scalene triangle.
Answer:
The percent error in Isabel's measurement is <u>12.5%</u>.
Step-by-step explanation:
Given:
Isabel thinks she has space for a 45 inch wide bookcase it turns out she only has space for a 40 inch wide bookcase.
Now, to find the percent error in Isabel's measurement.
Measurement she thinks = 45 inch.
The actual measurement = 40 inch.
<u><em>So, the error in measurement</em></u> = 
Now, to get the percent error of the measurement:
Therefore, the percent error in Isabel's measurement is 12.5%.
Answer:
82%
Step-by-step explanation:
4237-742 = 3495
3495/4237=0.824876
0.824876*100= 82%
Recall that for 
, we have
Replace 
with 
and we get
Lastly, multiply this by 
, so that
Okey go heard I'm help you
