Answer:
16
Step-by-step explanation:
3/4 = 12/x
Since 3 × 4= 12
[Apply the same number with the numerator and denominator]
4 × 4= 16
x = 16
Answer:
180
Step-by-step explanation:
4*45=180
5*36=180
6*30=180
9*20=180
we know that
To Round a number
a) Decide which is the last digit to keep
b) Leave it the same if the next digit is less than (this is called rounding down)
c) But increase it by if the next digit is or more (this is called rounding up)
In this problem we have
We want to keep the digit
The next digit is which is less than , so no change is needed to
therefore
the answer is
aj+j-a=f+j-f²
if a is 13 and j is 13 and f is 7