2.
Find the sum on a number line.
(d) (-2) + 1 + (-2)
(1) (-2) + (-3) + (-4)
Answers
Answered by
1
Answer:
1.-3
2.-9
Step-by-step explanation:
-2-2+1= -3
-2-3-4= -9
Answered by
0
Answer:
24 square unit
Step-by-step explanation:
AB=
(3−2)
2
+(4+1)
2
=
1+25
=
26
BC=
(−2−3)
2
+(3−4)
2
=
25+1
=
26
CD=
(−3+2)
2
+(−2−3)
2
=
1+25
=
26
DA=
(−3−2)
2
+(−2+1)
2
=
25+1
=
26
AC=
(−2−2)
2
+(3+1)
2
=
16+16
=
32
BD=
(−3−3)
2
+(−2−4)
2
=
36+36
=
72
Now we can see that
AB=BC=CD=DA=
26
units but daigonals AC
=BD
=> ABCD is a quadrilateral whose all sides are equal but diagonals are not equal.
=> ABCD is a rhombus, not a square.
Area of rhombus ABCD =
2
1
× (Product of diagonals)
=
2
1
×(AC×BD)
=
2
1
×(
3
2×
7
2)
=24 sq.units
Similar questions