Answer:
Step-by-step explanation:
Let's call lifeguarding L and car washing W. In order to write a system, we need to first separate the NUMBER of hours worked from the MONEY earned, because they are very different things.
If she works 10 hours, that is the number of hours worked between both jobs. Therefore, the equation for the NUMBER of hours worked is
L + W = 10.
If she earns $13 an hour lifeguarding, the expression for that is 13L; if she earns $12 an hour car washing, the expression for that is 12W. The MONEY she earned together by doing both those jobs is
13L + 12W = 124
There you go!
87.56????????
Just subtract 87.56 from 123.47 then divide by 2 .
= 17.95
Answer:3888
Step-by-step explanation:
(6^4)3
=1296*3=3888
Hope I helped
Answer:
x = 117
Step-by-step explanation:
Given
11 - 
= 0 ( subtract 11 from both sides )
- = - 11 ( square both sides )
(- )² = (- 11)²
x + 4 = 121 ( subtract 4 from both sides )
x = 117
