1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nikdorinn [45]
3 years ago
11

In a certain country, approximately 22 out of 100 people over the age of 12 smoke. How many smokers would you expect in a group

off 550 people over the age of 12?
Mathematics
1 answer:
Elan Coil [88]3 years ago
8 0

Answer:

121 smokers

Step-by-step explanation:

This can be calculated as a simple rule of 3.

In these problems, the first step is identifying the measures in the problem. Then, we must identify whether their relation is direct or inverse.

When it is direct, as one measure increases, the other will increase too.

When it is inverse, as one measure increases, the other will decrease.

In this problem, the measures are the number of people over 12 that smoke, and the total number of people over 12. Their relation is direct, because as the number of people increases, the number of smokers will increase too.

So we must solve the following rule of three:

22 smokers - 100 people

x smokers    - 550 people

x = 550*22/100

x = 22*5.5

x = 121 smokers.

So,  in a group off 550 people over the age of 12, there are 121 expected smokers.

You might be interested in
Andy is scuba diving. he starts at sea level and then descends 10 feet in 212 minutes. part a how would you represent andy's des
Mashcka [7]
I would use the starting position, sea level as zero. Then I would convert all those minutes to hours so the answer is an integer and not a decimal.
60 min * (-10 ft / 212 min) = -2.83 ft/hr

round to integer = -3 ft/hr
4 0
3 years ago
Not very good at geometry
FromTheMoon [43]
It's B - 1/√3
because tan is opposite side over adjacent
6 0
3 years ago
How to find the discriminant of
kati45 [8]

The discriminant is 225

4 0
3 years ago
I don’t understand this
coldgirl [10]

Answer:

just use the calculator

3 0
2 years ago
Read 2 more answers
7 more than twice a number x
torisob [31]
So,

"7 more than"
7 +

"twice a number x"
2 * x or 2x

"7 more than twice a number x"
7 + 2x or 2x + 7
5 0
3 years ago
Other questions:
  • Which situation can be modeled by the equation 45-2.50x=11.50
    7·2 answers
  • What’s the measure of B?
    6·1 answer
  • Help ASAP 1-4 please
    15·1 answer
  • Which is greater 3/5 or 3/3
    15·1 answer
  • Hlpppppppppppppppppppppppppppppppppp
    12·2 answers
  • The school cafeteria workers make 2 breakfast bags for every 5 students in the
    12·1 answer
  • I need help ;------;​
    8·2 answers
  • The radius of the base of the cone is 5 cm.
    15·1 answer
  • Which circle is the graph of the equation (x + 4)2 + (y – 5)2 = 4?
    7·1 answer
  • Question 2 of 10
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!