Answer:
13
Step-by-step explanation:
Parentheses first:
5+ (-4) * (-2)
Then Multiply:
5+8
Then Add:
13
Answer: 3
Step-by-step explanation:
Scale factor is the ratio of the corresponding sides, so:

Answer:
times by 0.719
Step-by-step explanation:
Answer: t= 13.4
Step-by-step explanation:
The given equation is 
To solve this equation for 't', we first divide both sides by
, we get

Taking log on both the sides, we get

Since 
Then,

Hence, the value of t is 13.4.
The value of 3 in 630 is ten