Answer:
{-1,0,1}
Step-by-step explanation:
The domain of a function is the set of all input values. The input values are the first coordinate in any coordinate pair (x,y).
So the domain here is {-1, 0, 1}.
Answer:
Step-by-step explanation:
Look at the 3rd decimal digit (the digit after the hundredths).
- if it is the digit is less than 5 then round the number down by taking away the decimal point of the number after the 2nd decimal place;
- However if it is 5 or more then round the number up by adding one on to the hundredths digit and removing the rest of the decimal part of the number after it
For example,4.749 rounds up to 4.75 because the 3rd decimal digit is a 9.
I hope this helps ^^
Answer:
2x+8
Step-by-step explanation:
2 times x = 2x. 2 times 4 = 8.
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Answer:
8 pies and 2 coffees must have been bought.
Step-by-step explanation:
Given that:
10 men bought either a pie or a cup of coffee.
Cost per pie = 60p
Cost per coffee = 50p
Total amount spent = £5.80 * 100 = 580p
Let,
x be the number of pies
y be the number of coffees
According to given statement;
x+y = 10 Eqn 1
60x+50y=580 Eqn 2
Multiplying Eqn 1 by 50
50(x+y=10)
50x+50y=500 Eqn 3
Subtracting Eqn 2 from Eqn 3
(60x+50y)-(50x+50y) = 580-500
60x+50y-50x-50y=80
10x=80
Dividing both sides by 10
Putting x=8 in Eqn 1
8+y=10
y=10-8
y=2
Hence,
8 pies and 2 coffees must have been bought.
