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Alekssandra [29.7K]
3 years ago
10

Simplify. (-4b^3+b-1)+(6b-6)

Mathematics
2 answers:
artcher [175]3 years ago
7 0

Answer:

-4b^3+7b-7

Step-by-step explanation:

MissTica3 years ago
4 0
<span> -4b3 + 7b - 7
that is the answer for you </span><span />
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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
How to write five million, forty thousand
NeTakaya

That would be 5,040,000

8 0
3 years ago
Read 2 more answers
A. What is the circumference of the
erik [133]

Answer:

a) 94.2 cm

b) 78.5%

Step-by-step explanation:

a) since the square side = 30 cm

it means the diameter = 30 cm

then circumference of the largest circle that can be cut = 3.14×30 = 94.2 cm

b) the perimeter of the square = 30×4 = 120

94.2 for 120

x% for 100%

x = (100×94.2)/120 = 9420/120 = 942/12 = 78.5%

6 0
3 years ago
Select whether each system of equations has no solution, one solution, or infinitely many solutions.
Firdavs [7]
I’m not sure!!!!!!!!!!!!!!!!!!
8 0
2 years ago
9). Four friends earned $4.20 for washing a car. They decided to split the money equally. How much money did each friend get?​
V125BC [204]

Answer:

1.05

Step-by-step explanation:

4 0
2 years ago
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