If ABCD is a rectangle, and m∠ADB=55°, what is the value of x?
2 answers:
Answer: OPTION D.
Step-by-step explanation:
Rectangles have four right angles (angles of 90 degrees).
The point of intersection of the diagonals divides each one of them into two equal parts.
Knowing this, we can conclude that:
(Observe the figure)
Therefore, since the sum of the interior angles of a triangle is 180 degrees, we can find the value of "x":
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Answer:
80 countries participated in the 1980 olympics in Moscow.
Step-by-step explanation:
Hello, I think I can help you with this
You can solve this by using a simple rule of three
Step 1
define
140 countries participated in 1984,this was 75% more than the last time,this means that 140 is the 175% of a value that we need to know
if
140 ⇔175%
x? ⇔100%
the relation is
Step 2
solve for x
80 countries participated in the 1980 olympics in Moscow.
Have a nice day
