Answer:
serious??? D-180
Step-by-step explanation:
Answer:
Step-by-step explanation:
x²+x²=9²
2x²=81
x²=81/2=(81×2)/4
x=9√2/2≈4.5√2≈6.36
9.
x²+x²=11²
2x²=11²
x²=11²/2
x=11/√2=11√2/2≈7.78
Answer:
12.75
Step-by-step explanation:
The computation of the geometric mean of sqrt 77 and sqrt 343 is given below:
As we know that
Geometric mean = 
where
a is the first number = 
And, the b is the second number = 
Now first we have to convert into a number
For a it, is = 8.78
And, for b, it is = 18.52
Now the geometric mean is

= 12.75
A square's sides are always all congruent. A square's angles are always all congruent. The opposite sides of a square are always parallel.
Step-by-step explanation:
a) rahul's age = t
rahul's age 8 yrs. back = t - 8