Answer:
D is the answer
Step-by-step explanation:
We want a mixture of low-fat and whole milk to equal 32ounces
Therefore, we know one equation is:
l + w = 32
That 32 ounce mixture should be 2% butter fat
So the amount of butter fat we want is
2% of 32 = 0.64 ounces
At the same time, this mixture contains low-fat and whole milk, which contain 1% and 3.25% butter fat respectively.
therefore, the butter fat in low-fat and whole milk is 0.01l and 0.0325w respectively.
The coefficients are just the percentages in decimal form
Due to the law of conservation of mass,
The addition of these two should yield the final amount of butter fat, meaning the other equation is:
0.01l + 0.0325w = 0.64
$300 every month beginning Feb 1st until the month of June = $1800
Answer:
Statement Reason
1. 
1. Distributive Property
2. 
2. Combine like terms
3. 
3. Addition Property of Equality
4. 
4. Division Property of Equality
Step-by-step explanation:
The given equation is
Using distributive property, we get
(Combine like terms)
Using Addition Property of Equality, add 2 on both sides.
Using Division Property of Equality, divide both sides by 9.
n = last test
(87 + 78 + 61 + n) : 4 = 78,5
87 + 78 + 61 + n = 78,5 x 4
n = 314 - 226
n = 88
