Help me please with 3-111
1 answer:
Last Question
Because this may not be the question you want, I'll omit the first step which should be done with latex. The key to all of these except C is to invert the second fraction (turn the second fraction upside down) and multiply.
A
=(6*-2) / (5*3) = - 12/15 = -4/5
B
= (7*5) / (4*3) = 35 / 12 = 2 11/12
C
Impossible to do 4/0 cannot be done.
D
= (-2*-4)/(3*5) =
8/15
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Answer:
C) 6 lbs peanuts, 3 lbs almonds, 2 lbs raisins
Step-by-step explanation:
Your goal is to find out how many of each item will equate to 21 dollars. Your function is as follows:
1.5x+3y+1.5z=21
Where x, y, z are peanuts, almonds, raisins respectively (in that order). 21 is the total cost of the mixture.
All you have to do is start plugging in the variables given in the answer choices.
<u>A) Peanuts (x) = 3, Almonds (y) = 6, Raisins (z) = 2</u>
Everywhere you see x,y,z, you replace with their value.
A doesn't equal 21. On to the next one.
<u>B) Peanuts (x) = 8, Almonds (y) = 6, Raisins (z) = 2</u>
Everywhere you see x,y,z, you replace with their value.
B also doesn't equal 21. On to the next one...
<u>C) Peanuts (x) = 6, Almonds (y) = 3, Raisins (z) = 2</u>
Everywhere you see x,y,z you replace with their value.
Both sides of the equation equal 21 which means C is our answer.