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
Solnce55 [7]
3 years ago
12

In 1990, there were 4,500 deaths due to lung diseases in miners aged 20 to 64 years. The expected number of deaths in this occup

ational group, based on age-specific deaths rates from lung diseases in all males aged 20 to 64 years, was 1,800 during 1990. What is the standardized mortality ratio (SMR) for lung disease in miners
Mathematics
1 answer:
DIA [1.3K]3 years ago
7 0

Answer:

2.5

Step-by-step explanation:

We have that the standardized mortality ratio (SMR) is the relationship between the number of deaths observed in a year, that is, those that occurred and the number of expected deaths, that is, those that were predicted.

SMR = observed / expected

therefore if we replace we have:

SMR = 4500/1800

SMR = 2.5

Which means that the standardized mortality ratio (SMR) is 2.5

You might be interested in
(7x²+2x+5)+(3x²-8x-10)
Mariulka [41]
First you would simplify the equation <span>(7x²+2x+5)+(3x²-8x-10) lets start with the first part 
</span><span>(7x²+2x+5) 
</span>7x² + 2x which = 49x + 2x which also = 51x Then you add the last part (+5) 
51x + 5
Now you simplify the last part.
<span>(3x²-8x-10)
</span>3x²-8x which=9x - 8x which also = 1x or simply x Then add the last part (-10) Which you'll get x-10 
51x + 5) + (x - 10) = 52x -5
so your answer is 52x - 5
7 0
3 years ago
Given that F(x) = x2 + 2, evaluate F(1) + F(5).
gavmur [86]

Answer:

F(1)+F(5)= 30

Step-by-step explanation:

F(1)=1^2+2=1+2=3

F(5)=5^2+2=25+2=27

27+3=30

6 0
3 years ago
Yesterday tram charged $70 to babysit for 5 hours
slega [8]

Answer:

And?

Step-by-step explanation:

We need more context

3 0
3 years ago
The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function? The domain is all real n
dedylja [7]

Answer:

The domain is all real numbers. The range is {y|y ≤ 16}

Step-by-step explanation:

we have

f(x)=-x^{2}-2x+15

This is a the equation of a vertical parabola open downward

The vertex is a maximum

The vertex is the point (-1,16)

see the attached figure

therefore

The domain of the function is all real numbers ----> interval (-∞,∞)

Te range of the function is

y\leq 16

All real numbers less than or equal to 16 ----> interval  (-∞,16]

8 0
3 years ago
Read 2 more answers
To determine whether 30 horses can be put into 7 stalls; so that in every stall there may be, either a single horse, or an odd n
algol [13]

Answer: No solutions

If i put any combo of horses of single or odd, always an even number at last stall.

3 0
3 years ago
Other questions:
  • My cousin needs help on all the questions. Please help him he is failing math
    12·1 answer
  • F(x) = (2/5)^x g(x) = (2/5)^x– 3
    15·2 answers
  • Aa criterion : if two corresponding angles of two triangles are congruent then the two triangles are similar
    7·1 answer
  • You started with $300, and you spent $115 on Jake. You also set aside money to cover the sales tax on $300. Now it's your turn t
    8·1 answer
  • Helllllllllllpppppppppppppppppp
    6·1 answer
  • Which of the following could be the coordinate point for a function whose inverse has a coordinate point at (-3, -8)
    8·1 answer
  • HELP PLEASE!!!!
    10·1 answer
  • A candy company says that each bag of candy they manufacture will have 35 pieces of candy with a 9% error margin.
    13·1 answer
  • A group consisting of 10 children an adult went to a movie theater children tickets cost 5 each and adults tickets cost 8 each a
    5·1 answer
  • Simplify 5x^2+43x-18=0
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!