Find a number, twice of which decreased by 7 gives 65.

Number = 36

Step-by-step explanation:

Given that,

A number twice of which decreased by 7 gives 65.

Let the number be x.

Twice of the number is 2x.

ATQ,

2x - 7 = 65

We can solve the above equation.

Adding 7 both sides.

2x-7+7 = 65 +7

2x = 72

x = 36

So, the required number is 36.

∠DEA and∠ CED

Step-by-step explanation:

supplementary angles are angles that when added together the add up to 180 degrees

the answer would be :

∠DEA and ∠CED