Answer:
Step-by-step explanation:
x+165 = 180
x = 180 - 165
x = 15
For this case, the first thing we must do is define a variable.
We have then:
x: unknown number
Doing the multiplication we have:

From here, we clear the value of x.
We have then:

Therefore, we have:
Answer:
7 times 1/7 equals 1
If the legs are length a and b and hyptonuse is c then
a²+b²=c²
so
if the legs are 20 and 21 and the hypotnuse is x then
20²+21²=x²
400+441=x²
841=x²
29=x
Answer:
14*2
Step-by-step explanation:
x=7 and Y=2
2×7*2
14*2
It would be 8√17 because the seventeens don't change only the one that subtracting 9.