Question

(-10) × (-7) + (-10) × (-3)​

Answer 1

Step-by-step explanation:

Let A, B, C and D represent the points (-7, -3), (5, 10), (15, 8) and (3, -5) respectively.

Using the distance formula d=

(x

2

−x

1

)

2

+(y

2

−y

1

)

2

, we find

AB

2

=(5+7)

2

+(10+3)

2

=12

2

+13

2

=144+169=313

BC

2

=(15−5)

2

+(8−10)

2

=10

2

+(−2)

2

=100+4=104

CD

2

=(3−15)

2

+(−5,−8)

2

=(−12)

2

+(−13)

2

=144+169=313

DA

2

=(3+7)

2

+(−5+3)

2

=10

2

+(−2)

2

=100+4=104

So, AB=CD=

313

and BC=DA=

104

i.e., The opposite sides are equal. Hence ABCD is a parallelogram.

Answer 2

Answer:

100 is the answer

Step-by-step explanation:

right