Let Karen works x hours baby sitting
So, she worked (18-x) hours giving music lessons
So,
According to question
5x + 12(18-x)=139
This gives
7*x=77
x=11
So,
<span>Karen worked <em>11 hours baby sitting </em>and (18-11)=7 hours giving music lessons</span>
Answer:
Yamato's here!
Step-by-step explanation:
Oh well thank you! Have a nice and great holiday!!
(^ - ^ /)Xoxo, Yamato-
Answer:
this is geometry?
Step-by-step explanation:
B, because the mid segment is half the length of the third side
Answer:
± 7
Step-by-step explanation:
Given
d = 
, then
d = 7 or - 7, that is ± 7
Since 7 × 7 = 49 and - 7 × - 7 = 49
