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const2013 [10]
3 years ago
10

Given b= 4 and c= -5, evaluate b2 - c2. 41 -2 -9

Mathematics
1 answer:
irina [24]3 years ago
4 0

Answer:

-9

Step-by-step explanation:

b² - c²

= 4² - (-5)²

= 16 - 25

= -9

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WILL GIVE A BRAINLIEST
skelet666 [1.2K]
Find slope
slope betwen 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)

so
first make denoms same
denom is 10
(4/5,1/5) turns to (8/10,2/10)
(1/2,3/2) turns to (5/10,15/10)
slope=(15/10-2/10)/(5/10-8/10)=(13/10)/(-3/10)=13/-3=-13/3

use point slope
use (4/5,1/5)
y-y1=m(x-x1)
a point is (x1,y1) and slope is m
y-1/5=-13/3(x-4/5)
expand
wait, we don't need to do that, the only one with slope -13/3 is D
answer is D
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