miguelperdomo
20.09.2020 •
Mathematics
Look at the following survey and then answer the question.
A survey was conducted at a veterinarian's office. For one
week, all of the clients were surveyed. They were asked if they
enjoy the management of the office. The week that the survey
was conducted, 12 out of 80 clients had appointments. The
overall result is that the clients love the way the office is
managed
What proportion of the clients were surveyed?
a 22 out of 80
b 42 out of 80
C 32 out of 80
d 12 out of 80
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Ответ:
A) y=-4/5
Step-by-step explanation:
When you have two fractions equal to one another, the easiest thing is often to cross multiply. To do this, multiply the top of the left fraction by the bottom of the right fraction, and then multiply the bottom of the left fraction by the top of the right side and put them equal to eachother:
Knowing this, and some algebra, we can solve the question:
(7y+4)(3)=(y+2)(-4)
21y+12=-4y-8
21y+4y=-8-12
25y=-20
y=-4/5