Definition of a rational number:
A rational number is a number that can be written as fraction of integers.
19/10 is a fraction.
19 and 10 are integers.
19/10 follows exactly the definition of a rational number, so it is rational.
I could answer this if you could tell me the value of one of the letters
Answer:
$3.22 per square feet
Step-by-step explanation:
To solve, I usually set up an equation:
<u>sq ft</u> = <u>12 1/2</u> = <u> 1 </u>
$ 40.21 x
Then, use cross multiplication.
(12 1/2)x=40.21
Divide both sides by 12 1/2 or 12.5
x = 3.2168
Round to the hundredths place [because we're dealing with money]
$3.22
I hope this helps!
Answer:
Step-by-step explanation: sec^2A-tan^2A+1
=1+1
=2
Answer:
(4,-9/2)
Step-by-step explanation:
(1+7/2,-6-3/2)
(4,-9/2)
