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lbelle
27.03.2020 •
Mathematics
-6x+3y=9 -8x+4y=12 linear equation
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Ответ:
[1] 4x + 3y = 9
[2] 3x + 4y = 12
Graphic Representation of the Equations :
3y + 4x = 9 4y + 3x = 12
Solve by Substitution :
// Solve equation [2] for the variable y
[2] 4y = -3x + 12
[2] y = -3x/4 + 3
// Plug this in for variable y in equation [1]
[1] 4x + 3•(-3x/4+3) = 9
[1] 7x/4 = 0
[1] 7x = 0
// Solve equation [1] for the variable x
[1] 7x = 0
[1] x = 0
// By now we know this much :
x = 0
y = -3x/4+3
// Use the x value to solve for y
y = -(3/4)(-0/17603848)+3 = 3
Solution :
{x,y} = {0/17603848,3}
Ответ:
Given :
Each pitcher of power smoothie that Ginger makes has 2 scoops of pineapple, 4 scoops of strawberries, 1 scoop of spinach, and 1 scoop of kale.
To Find :
If Ginger makes 6 pitchers of power smoothies, how many scoops will she use in all.
Solution :
Let, Ginger makes x pitchers of power smoothies :
Now, it is given that Ginger makes 6 pitchers of power smoothies.
Total scoops are :
Therefore, number of scoops Ginger used is 84.
Hence, this is the required solution.