Answer:
d 7/4
Step-by-step explanation:
180-70-30=80
The answer is 80
The two triangles are the same.
Corresponding angles of congruent triangles are equal.
A triangle's three angles add up to 180 degrees.
Answer:
x > -3.2
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
As given,
Step 1: Pick any three-digit counting number
Lets pick the number 643
Step 2: Reverse the digits of the original number.
So, reverse becomes 346
Now, it says that the difference of these two numbers has a tens digit of 9.
Lets, check:

So, its true that the difference has a tens digit of 9.
Another example:
Lets take 449
So reverse is = 944
Difference = 
Here also the tens digit is 9.
So, the condition applies to all 3 digit numbers.