The answer is 19.4047.
To find the answer, follow my instructions:
First, find the difference or subtract 21.23 and 2.04. You'll get 19.19.
Second, find the sum or add the numbers 1.115, 3.18, 22.0613, and 12.2384. Remember that when adding numbers that are decimals, you have to align all of the decimal points to get the right answer. The sum of all those numbers are 38.5947.
Third, gather your data. So you got the numbers 19.19, and 38.5947. The question is asking for the difference between them. Remember that difference means subtraction or subtracting/minus. So subtract those numbers. You'll get 19.4047.
I hope you find this answer the most helpful! :)
For this case we have by definition, that the perimeter of the figure will be given by the sum of its sides, that is:

We add similar terms:

Thus, the correct option is option b. That is, 
Answer:

Answer:
$49
Step-by-step explanation:
I know this because
x/140 = 35/100
cross multiply
4900 divided by 100=
$49 dollars is the discount amount.
I hope this helped you!:)
Answer:
4 2/7
Step-by-step explanation:
- x * 9 4/5 = 42
- x * 49/5 = 42
- x = 42 : 49/5
- x = 42 * 5/49
- x = 30 /7
- x = 4 2/7
the discriminant b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0
13x^2-16x = x^2 -x
we need to get in it the standard form
subtract x^2 from each side
12x^2 -16x = -x
add x to each side
12x^2 -15x = 0
12x^2 -15x -0 =0
a=12 b=-15 c=0
b^2 -4ac
the discriminant = b^2
b^2 = (-15)2 = 225