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snow_lady [41]
3 years ago
8

Determine the slope of the following equation: 2y -4x = 9

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
3 0
In y=mx+b, this is y=2x+9/2. The slope is 2
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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


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3 years ago
If the relative frequencies are 0.48 and 0.52, which
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Answer:The Last One

Step-by-step explanation:

3 0
3 years ago
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Find the sum of this problem.
IceJOKER [234]

Answer:

34

Step-by-step explanation:

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2 years ago
What is the answer for this equation 4/7w=24?
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Solve the equation 7/z-1 = 9/z+4
algol [13]

Answer:

z is equal to 18.5

Step-by-step explanation:

When an equation is in the format a/b = c/d, the quickest way to simplify it is to cross multiply.  Each side is multiplied by the other sides denominator, eliminating the division:

\frac{7}{z-1} = \frac{9}{z + 4}\\7(z + 4) = 9(z - 1)\\7z + 28 = 9z - 9\\7z - 9z = -9 - 28\\-2z = -37\\z = 37/2\\z = 18.5

So z is equal to 18.5

3 0
3 years ago
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