Algebra always makes things sound harder than they actually are, and weird vocabulary can mix up the steps we knew so well.
Part 1: Multiply the first equation by a 2 so that you can cancel out the y variable.
6x - 2y = 0
5x + 2y = 22
Part 2: Actually cancel out the y variables, and combine like terms.
11x = 22
Part 3: Solve for "x" by dividing both sides by 11
x = 2
Part 4: Substitute the variable "x" with the value we just solved for in the original equation.
3(2) - y = 0
6 - y = 0
Then, solve for y by adding y to both sides
6=y
Solution Set = {2,6}
Answer:
8 pounds of cheaper candy,
17.5 pounds of expensive candy
Step-by-step explanation:
Let's define some variables. Let's say the amount of pounds of candy that sells for $2.20/lb is x, and the $7.30 is y. Now we can write some equations!
x + y = 25.5
We can start substitution. We can say that x = 25.5 - y. Plugging this into our second equation, we get:
y = 17.5
Plugging this in, we find that:
x = 8.
My answer is: -6xy2 - y3<span> + 30
Hope this helps bye</span>
Answer 9.26
Step-by-step explanation:
5.9/2=2.95x3.14=9.263=9.26
Use our brains and what we know
f(x)=a(x-h)²+k
vetex is (h,k)
and a is te leading coefient
if directix is below the focus, then it opens up and a is positive
if directix is above focus, then it opens down and a is negaitve
vertex is in between directix and focus
so
(3,-1) and y=1
-1<1
so directix is above
a is negative
directly in between
distance from -1 to 1 is 2
2/2=1
1 above (3,-1) is (3,0)
vertex is (3,0)
y=a(x-3)²+0
y=a(x-3)²
the only option with a negative 'a' value is B
answer is B
