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guajiro [1.7K]
3 years ago
13

Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!

Mathematics
2 answers:
OlgaM077 [116]3 years ago
8 0

Add 8 and 6:

8+6

then multiply by 2:

2*(8+6)

then add 9:

9 + [2*(8+6)]

The answer is D.

Musya8 [376]3 years ago
3 0

Answer by JKismyhusbandbae: D) 9 + [2 * (8+6)]

1. First do all operations that lie inside parentheses.

2. Next, do all operations that lie inside brackets.

3. Finally, do any remaining operations that lie outside the brackets.

9 + [2 * (8+6)] = Add 6 and 8

9 + [2 * (14)] = Multiply by 2

9 + [28] = 37     add by 9


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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.

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c) This is of the form Ax = B

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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

= x \    12.5\\y  \     7.5

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Answer:

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