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3 years ago

What is domain restrictions and what causes them?

1 answer:

8 0

Domain restrictions are values of x which are not acceptable in a function.

They may be arbitrary because we simply want to ignore them. eg y = x^2 between 0 and 4

They may make no sense in the context, eg graph a compounding investment over next 20 years.
Negative values for x make sense here.

They may avoid mathematical impossibilities eg y = (x^2 - 4x) / (x - 4) which must avoid dividing by zero, so x cannot = 4.
The graph will look like the line y = x but have a hole where x= 4

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CD player: $142.00<br>Sales tax: 5.5%

zubka84 [21]

The total amount paid by a customer who purchased a CD player at $142.00 and sales tax of 5.5% is $149.81

<h3>Sales tax</h3>

Cost of CD player = $142.00
Sales tax = 5.5%

Amount of sales tax = 5.5% of $142.00

= 5.5/100 × 142

= 0.055 × 142

= $7.81

Total amount paid by customers = Cost of CD player + Amount of sales tax

= $142.00 + $7.81

= $149.81

Learn more about sales tax:

brainly.com/question/1700984

#SPJ1

6 0

2 years ago

I’m super confused on what this means

vampirchik [111]

The two triangles are congruent to each other, meaning they’re proportional to each other but not equal.
The question is asking you to list the angles that are congruent to each other (when talking about angles and congruency, if two angles are congruent, they are equal) and the sides that are congruent to each other (as long as all sides are proportional to each other, they are congruent (Triangle ABC has side lengths of 1, 2, 3 and Triangle DEF has side lengths of 2, 4, 6; these two triangles are congruent))

3 0

3 years ago

In the year 2000, the population of Mexico was about 100 million, and it was growing by 1.53% per year. At this growth rate, the

N76 [4]

111=100(1.0153)^x
Solve for x
X=log(111÷100)÷log(1.0153)
X=6.9years round the answer
X=7 years
So in what year
2000+7=2007
In the year 2007

6 0

3 years ago

Read 2 more answers

last year Patrick paid £2534 for his annual train ticket this year he has to pay £2612 for his annual train ticket. work out the

Aleonysh [2.5K]

Answer:

Percentage increase in the cost of his train ticket = 3% (Approx.)

Step-by-step explanation:

Given:

Cost of annual ticket paid by Patrick last year = £2,534

Cost of annual ticket paid by Patrick current year = £2,612

Find:

Percentage increase in the cost of his train ticket

Computation:

Percentage increase = [(Current - Base) / Base]100

Percentage increase in the cost of his train ticket = [(2,612 - 2,534) / 2,534]100

Percentage increase in the cost of his train ticket = [(78) / 2,534]100

Percentage increase in the cost of his train ticket = [0.03078]100

Percentage increase in the cost of his train ticket = 3.078

Percentage increase in the cost of his train ticket = 3% (Approx.)

3 0

3 years ago

Danielle spent 35$ on a magazine and some notepads. If the magazine cost 3$ and each notepad cost 4$ then how many notepads did

kifflom [539]

She bought 8 notepads

3 0

3 years ago

Read 2 more answers