Answer:
√10/2
Step-by-step explanation:
5/√10
Rationalizing the surd involves multiplying the numerator and denominator by the surd.
5/√10 * √10/√10
5√10/10
√10/2
Answer:
75
Step-by-step explanation:
mirror
4a=20⇒a=5
we know diagonals are perpendicular. if u look at one of the right triangles, you can see that for hypotenuse to be 5, the legs have to be 4 and 3 to satisfy the given ratio 4:3.
so, diagonals are 8 and 6 as we know that diagonals bisect each other.
Area=8*6/2=24
I don't know i think is C
P= a+b+c = 76
side a = 2b = 30
side b = b = 15
side c = 2b + 1 = 31