7. X2=25
X=5, x=—5
8. (X—3)2=49
X=10, x=—4
9. X2+3x—28.
X=4, x=—7.
10. 5x2–8=3x.
X=8/5, x=—1
Answer:
KITE, TRAPEZIUM and A Concave quadrilateral
Step-by-step explanation:
PARALLELOGRAM: A quadrilateral in which opposites sides are PARALLEL and EQUAL.
So, Any quadrilateral which does NOT have its opposite sides being parallel or equal is not a parallelogram.
So, such quadrilaterals are:
1. KITE : A kite is not a parallelogram as it has no parallel lines at all.
2. TRAPEZIUM : A trapezium has ONLY ONE pair of opposite sides parallel.
3. A Concave quadrilateral does not have parallel sides.
Answer:
2.3
Step-by-step explanation:
2 2/3 × X= 6 1/7
8/3 × X= 43/7
8x/3 =43/7
cross multiply;
56x=129
Divide both sides by 56
56x/56= 129/56
x= 2.3036=2.3
Where is the rest at that’s only 1
