Identity, <span>For example, x + x = 2x is </span>true for every value<span> of x.</span>
Answer:
c 18
Step-by-step explanation:
Idid thsi in Kahn academy and got it correctly
Answer:
2/3
Step-by-step explanation:
You can cross simplify so you can cancel out the 7s because they are opposite of one another.
Let n be the number of lbs of nuts.
Let r be the number of lbs of raisins.
9n + 3r = 60 * 5 = 300 .............(1)
n + r = 60
n = 60 - r ...............(2)
Plugging the expression for n in (2) into (1) we get:
9(60 - r) + 3r = 300
which expands to:
540 - 9r + 3r = 300 .............(3)
Simplifying and rearranging (3) we get:
-6r = -240
Therefore r, the weight of raisins = 40 lbs
and the weight of nuts is 60 - 40 = 20 lbs
