After 3 hours.
working;
after 3 hours, Terry will have completed 15 hours + 10*3 hours=45 tasks
Susan will have completed 9+ 12*3hours= 45 tasks
Answer:
a
Step-by-step explanation:
1) Parallelogram
2) Square
3) Rectangle
4) Trapezium or Trapezoid
Step-by-step explanation:
Step 1:
In a parallelogram the opposite sides will be parallel and equal
Square has all sides to be equal and the angles to be right angled.
In a rectangle, the four angles should be right angled and opposite sides should be equal.
A trapezoid or trapezium is a figure in which any of the pair of opposite sides should be parallel.
Step 2 :
1) This figure has opposite sides to be parallel and equal. Hence based on the first definition above, this is a parallelogram
Step 3 :
2) The second figure has opposite sides to be equal and the angles are of 90 degrees or right angled. Hence this is a square based on the second definition given in step 1
Step 4 :
3) The third figure has opposite sides to be equal and the angles are of 90 degrees or right angled. Hence this is a rectangle as per the 3 rd definition given in step 1
Step 5:
4 ) This figure has the horizontal pair of opposite sides to be parallel. Hence using the 4 Th definition in step 1, we can identify this as a trapezoid or trapezium.
Answer:
12
Step-by-step explanation:
We are finding the discriminant
b^2 -4ac
2x^2 - 2x - 1 = 0
a =2 b = -2 c = -1
(-2)^2 - 4(2)(-1)
4 +8
12