We have
<em>v</em> = (-7, 9) - (4, 3) = (-7 - 4, 9 - 3) = (-11, 6)
which as a linear combination of the <em>i</em> and <em>j</em> unit vectors is
<em>v</em> = -11<em>i</em> + 6<em>j</em>
Solve this ratio:
5 40
--- = -----
8 x
Then 5x = 320, and x = 64. So, on a day on which there are 40 lunch customers, there are 64 dinner customers (answer).
(-6 - 5i)(1 - 3i)
you foil this like you would any other set of binomials, so you'll multiply negative 6 and 1, then -5i and 1, etc:
-6 - 5i + 9i - 15
5i and 3i simplify to -15 because 5*3 is 15, and i*i = -1
then you just add like terms:
-21 - 5i + 9i
-21 + 4i is your answer.
Explanation:
See answer for explanation.
Answer:
5x-3+2x=x+7+6x
Answer: There are no solutions.
I'm pretty sure this is correct, sorry if it's not.
Have a lovely evening!
Answer:
28.27 in²
Step-by-step explanation:
A= π r² = π · 3² ≈ 28.27433in²
rounded: 28.27in²
hope this helped!