Theorem of Pythagoras: a²+b²=c², where a, b is legs and c is hypotenuse.
We've got one leg known, let it be a=sqrt 3,
and the hypotenuse - c=2sqrt3
Putting these into the theorem, we get an equation: (sqrt3)²+b²=(2sqrt3)² . Solving it, we get:
3+b²=4*3
3+b²=12
b²=9
This equation has two possible roots: b=3 and b=-3. Since this is a triangle, there can't be a side with a negative value => b=3.
The answer is a. 3
The 3 is in the tens place, meaning the value of the 3 is 3x10.
The 9 is in the ones place, meaning the value of the 9 is 9x1
So the place value of the 3 is ten times the value of the place value of the 9.
Answer:
x cannot equal -4 (the last option)
Step-by-step explanation:
From the line, you can see x equals every number except -4 where there's an open circle, meaning that x cannot equal 4
Answer:
Step-by-step explanation:
Given
comparing it with standard equation 
so 4a=1
so Focus of parabola is (0,0)
directrix
y=-a
here 
