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Kryger [21]
3 years ago
14

Write an express for the perimeter of the figure shown by combing like terms.

Mathematics
1 answer:
bogdanovich [222]3 years ago
8 0

Answer:

30c + 6 i believe

Step-by-step explanation:

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48

Step-by-step explanation:

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Welp !!!!!!!!!!!!!!!!!!
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It is <span>B</span>. All u have to do is -2a/b which is 2 then plug 2 in and you get (2,1)
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A solution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing
stepan [7]

Answer:

Step-by-step explanation:

Given that a solution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing 9% alcohol.

Let x gallons of 12% alcohol be mixed with y gallons of 4% alcohol.

Total gallons= x+y = 20

Alcohol content in the total mixture = 0.12x+0.04y =9% of x+y

0.12x+0.4y=0.09(20)\\12x+4y = 180

b) Two equations are

x+y = 20\\12x+4y = 180

c) This is of the form Ax = B

where A =\left[\begin{array}{ccc}1&1\\12&4\end{array}\right]

Inverse is \frac{1}{4-12} \left[\begin{array}{ccc}4&-1\\-12&12\end{array}\right]\\=\frac{-1}{8} \left[\begin{array}{ccc}4&-1\\-12&12\end{array}\right]\\

Solution set is A inverse *B

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3 years ago
Robert is purchasing some packs of chicken from the supermarket. The first pack weights 45 ounces . The second pack weights 3 po
blagie [28]

Answer:

3 pounds duh

Step-by-step explanation:

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At a dinner, the meal cost $32 and a sales tax of $1.87 was added to the bill. How much would the sales tax be on a $64 meal?
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Answer:

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Step-by-step explanation:

Since 64 is x2 the number 32, and the tax for that is 1.87 you times that times 2 so:

1.87x2=3.74

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2 years ago
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