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andriy [413]
3 years ago
7

No freeze antifreeze mixture contains 30% alcohol.how many alcohol is there in 15 quarts of no freeze?

Mathematics
1 answer:
insens350 [35]3 years ago
8 0

\bf \begin{array}{|c|ll}
\cline{1-1}
\textit{a\% of b}\\
\cline{1-1}
\\
\left( \cfrac{a}{100} \right)\cdot b
\\\\
\cline{1-1}
\end{array}~\hspace{5em}\stackrel{\textit{30\% of 15}}{\left( \cfrac{30}{100} \right)15}\implies 4.5

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Write y=1/6x+7 in standard form using integers
maw [93]

Hello, Never fear Papaguy is here!


Answer:

hello :

y = 1/6x + 7

6y = x+42

-x+6y = 42......(answer : A. )     –x + 6y = 42

Step-by-step explanation:

Look Above.


Note: If you loved this answer why not Mark Brainliest?


Merry Christmas   ( And a Happy New Year Too! )


~

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7 0
3 years ago
Let v1,....., vk be vectors, and suppose that a point mass of m1,....., mk is located at the tip of each vector. The center of m
a_sh-v [17]

Answer: m1 = 4

m2 = 5

m3 = 2

Step-by-step explanation:

given (21/11, 6/11) = m1 (-1/3) + m2 (3, -2) + m3 (5, 2)

= (-m1 + 3m2 + 5m3) / 11 = 21/11

= (3m1 + (-2)m2 + 2m3) / 11 = 6/11

so that m1 + m2 +m3 = 11

-m1 + 3m2 + 5m3 = 21

3m1 - 2m2 + 2m3 = 6

from this, we get the augmented matrix as

\left[\begin{array}{cccc}-1&1&1&11\\-1&3&5&21\\3&-2&2&6\end{array}\right]

= \left[\begin{array{cccc}-1&1&1&11\\0&4&6&32\\0&-5&-1&-27\end{array}\right]  \left \{ {{R2=R2 + R1} \atop {R3=R3 -3R1 }]} \right.

= \left[\begin{array}{cccc}-1&1&1&11\\0&1&3/2&8\\0&-5&-1&-27\end{array}\right]

= \left[\begin{array}{cccc}-1&1&1&11\\0&1&3/2&8\\0&0&13/2&13\end{array}\right]

(R3 = R3 + 5R2)

this gives m1 + m2 + m3 = 11

m2 + 3/2 m3 = 8

13/2 m3 = 8

13/2 m3 = 13

m3 = 2

m2 = 8 -3/2 (2) = 5

= m1 = 11- 5 - 2 = 4

this gives

m1 = 4

m2 = 5

m3 = 2

4 0
3 years ago
A wallet is originally $11.00. With a 40% discount, what is the sales price?
Leviafan [203]

Answer:

$6.60

Step-by-step explanation:

11 x .40 = 4.4

11 - 4.4 = 6.6

6 0
3 years ago
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dexar [7]

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