Answer:
7
Step-by-step explanation:
Divide the 12 by 4 to see how much one is for.
After you get $3 alk you do is divide the $21 by 3
Answer:
a
Step-by-step explanation:
A²+b²=c²
39²+b²=89²
1521+b²=7921
subtract 1521 from both sides
b²=6400
so then you square both sides
√6400
80
-213+x=-312
x=-312+213
x=-99
Answer:
The equation for the variation is:

Step-by-step explanation:
The relationship is given by the quotient between the two variables: (1) distance of the storm, and (2) the number of seconds to hear the thunder. That is:
