Answer: The system of equations represents the constraints in this situation are:
s + h = 40
$18s + $14h = $700
The above equations are known as simultaneous equations. 40 scarves and hats were sold, this can be represented with this equation:
number of hats sold + number of scarves sold = 40
s + h = 40
The total amount made from the sales is the sum of the total amount made from the sale of the hats and the total amount made from the sale of the scarves. This can be represented with this equation:
($18 x s) + ($14 x h) = $700
Step-by-step explanation:
This is the answer. I did it and got that. You do distributive and then combine like terms.
Step-by-step explanation:
Given the expression that Tayler tried to evaluate as:

We will solve this equation using PEDMAS
Multiplication before addition and subtraction
On solving:

From the steps above, we can see that Tayler made an error in step 3 by taking the difference of 7 and 6 and arriving at 1 instead of summing up to get 13 as shown above.
I'm sorry, but I have to seriously question the whole process.
-- What does "the angle between the Earth and sun" mean?
-- How in the world does he measure the distance between the Earth and sun ?
-- How are either of these related to the distance between the Moon and Sun ?
To me, this "scientist's" methods are as defective as this question is.
Answer:
The answer is B
Step-by-step explanation:
5x² +9x +3 - (6x ² -3x)
this is easier if you distribute the negative in front of the perenthesis so...
5x² +9x +3 + (-6x² + 3x)
then you just combine the terms with the same variable and exponent
-x² +12x +3