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aliya0001 [1]
3 years ago
11

If anyone can help me solve one of these equations, I will truly appreciate it!

Mathematics
1 answer:
bija089 [108]3 years ago
3 0
Photo math gal, it works
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1 point) According to one mathematical model, the average life expenctancy for American men born in 1900 was 55 years. Life expe
xxMikexx [17]

  a)

Let t represents number of years after 1900

so that means for 1900, value of t is 0

We are given point as (0,55)

and it says that life expectancy increases by 0.2

so that means slope,m=0.2

equation of line is y=mt +b

or y=0.2t +b

now we use point (0,55)

55 =0.2(0) +b

55 =0+b

55= b

so b=55

plug it back into the equation,we get

y=0.2t +55

b)

We are given y=73

so we plug it into the equation we got in part a and solve for t

y=0.2t +55

73 =0.2t +55

73-55 =0.2t

18 =0.2t

18/0.2 =t

90 =t

so t=90

This means the birth year =1900+t =1900+90 =1990


5 0
3 years ago
Find the value of a b and c.<br>​
Cloud [144]

Answer:

a= 90

2a= 135

b=45

c= 45

I think x

Step-by-step explanation:

5 0
3 years ago
The sum of the differences must be zero for any distribution consisting of n observations.
Semenov [28]

Answer:

false

Step-by-step explanation:

7 0
3 years ago
6) Molly invests $7,747 in a retirement
oksian1 [2.3K]

Answer:

R = 9% per year

Step-by-step explanation:

4 0
2 years ago
a local hamburger shop sold a combined total of 616 hamburgers and cheeseburgers on sunday. there were 66 moore cheeseburgers so
Ksju [112]

Answer:

242 Hamburgers,  374 Cheeseburgers

Step-by-step explanation:

Step 1: 616/2-66=242 Hamburgers

Step 2: 616-242=374 Cheeseburgers

Step 3: Check Work 242+374=616

4 0
3 years ago
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