Probably the last one
Use the equation for the area of a triangle 1/2(bxh)
Then multiply that number by 2 to get the area of the complete shape.
The statement is contradictory, because it is said that every member of the family gives a gift to every other member of the family. And from 10 members, there are just 2 exchanging. Anyway, maybe they are only 2 members exchanging the gifts at that point in time.
So, each member will exchange 9 gifts (that is 10 members total minus herself), and 2 members are exchanging gifts at that point, so 18 gifts are being exchanged.
Answer:
Step-by-step explanation:
Let the angle between and 150° be = b°
[ Forming a linear pair of angles]
Solving for by subtracting both sides by 150.
∴
[Angle lying on a straight line add up to 180]
Plugging in
Solving for by
subtracting both sides by 80.
then dividing both sides by 2.
Answer:
step 2 & the statement is number 2
Step-by-step explanation:
as he incorrectly factored -1 the correct answer -1(x+1)