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3 years ago

8) What is the domain of the function? Please help

Mathematics

1 answer:

alisha [4.7K]3 years ago

6 0

Answer:

{ x | 1, 2, 3, 4, 5, 6, 7, 8, 9 }

Step-by-step explanation:

We note that points between integer values have been excluded, so domain consists of integer x-values from 1 to 9, or

{ x | 1, 2, 3, 4, 5, 6, 7, 8, 9 }

and <em>not</em>

1 <= x <= 9

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4(x+x+7)-2x+8-4 substitute x=1 and x=2

Travka [436]

4(x+x+7)-2x+8-4
Substitute x with 1
4(1+1+7)-2(1)+8-4
=4(2+7)-2+4
=4(9)-2+4
=36-2+4
=34+4
=38

4(x+x+7)-2x+8-4
Substitute x with 2
4(2+2+7)-2(2)+8-4
=4(4+7)-4+4
=4(11)
=44. Hope it help!

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3 years ago

Write the English sentence as an equation in two variables. Then graph the equation.

Oxana [17]

Answer:

y = 8 - x^2

Step-by-step explanation:

"Decreased by ..." means whatever follows is subtracted from whatever came before. "Is" means "equals." So, the square of the x-value (x^2) is subtracted from 8:

y = 8 - x^2

7 0

3 years ago

Read 2 more answers

If 124 is subtracted from the square of a number the result is 200 what is the number

omeli [17]

Answer:

Step-by-step explanation:

let the number =x

then

x²-124=200

x²=200+124

x²=324

x=18

4 0

3 years ago

a new car sells for $25,000. the value of the car decreases by 15% each year. what is the approximate value of the car 5 years a

noname [10]

Given:
Initial value = 25,000
depreciation = 15% per annum based on net book value

Net book value = 25,000 (1 - 0.15)^t

where t is the number of years

NBV = 25,000 (0.85)^5
NBV = 25,000 (0.4437)
NBV = 11,092.50

The approximate value of the car 5 years from date of purchase is 11,092.50

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3 years ago

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(50pts) The distance covered and the time taken by a car are plotted in a graph.

IgorLugansk [536]

Answer:

a=2

b=40m

c=2m/s

Step-by-step explanation:

slope is rise over run so 10/5 simplified is 2/1 or 2

for b just look at the graph at the 20th second

for c you do distance over time so basically the same thing as a 10/5 which is 2m/s

5 0

3 years ago