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nignag [31]
3 years ago
13

Lines DE and AB intersect at point C.

Mathematics
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:

25

Step-by-step explanation:

2x+2+5x+3=180 (angles on a straight line)

7x+5=180

7x=180-5

7x=175

x=25 (dividing both sides by 7)

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belka [17]
If h(x,y)=x^2-y^2, then you can find partial derivatives: 
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At point A(-3,2,5) (this is the point which lies on the surface, because 5=(-3)^2-2^2=9-4=5) these derivatives have values:

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dsp73

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