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Rudiy27
3 years ago
14

A. y = - 1/4x +9

Mathematics
1 answer:
Vikentia [17]3 years ago
6 0
It's B= 1/4x+6 because I solve it
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4(c-3)-8 what is the value of c
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Answer:

Did you mean 4c-12=8? If so, the value of c is 5.

Step-by-step explanation:

3 0
3 years ago
I need help this one is even harder please
RUDIKE [14]

Answer:

-7\frac{1}{7}

Step-by-step explanation:

4 0
3 years ago
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Solve each system by elimination by multiplying both equations. eliminate y first. show all work.
Alex17521 [72]
First \mathrm{Multiply\:}10x-3y=18\mathrm{\:by\:}3:\quad 30x-9y=54
Then \mathrm{Multiply\:}6x-10y=-22\mathrm{\:by\:}5:\quad 30x-50y=-110
To get \begin{bmatrix}30x-9y=54\\ 30x-50y=-110\end{bmatrix}
So...
30x-50y=-110 \ \textgreater \  \begin{bmatrix}30x-9y=54\\ -41y=-164\end{bmatrix}
-41y=-164 \ \textgreater \  \mathrm{Divide\:both\:sides\:by\:}-41 \ \textgreater \  \frac{-41y}{-41}=\frac{-164}{-41}
To get y = 4.
\mathrm{For\:}30x-9y=54\mathrm{\:plug\:in\:} \:y=4 \ \textgreater \  30x-9\cdot \:4=54
\mathrm{Multiply\:the\:numbers:}\:9\cdot \:4=36 \ \textgreater \  30x-36=54 \ \textgreater \
Next \mathrm{Add\:}36\mathrm{\:to\:both\:sides} \ \textgreater \  30x-36+36=54+36 \ \textgreater \  \mathrm{Simplify} \ \textgreater \  30x=90
Finally \mathrm{Divide\:both\:sides\:by\:}30 \ \textgreater \  \frac{30x}{30}=\frac{90}{30} \ \textgreater \  x = 3
Therefore our solutions are y = 4, x = 3
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3 years ago
6. Sales tax is 8%. What will be the sales tax on a purchase of $12.50?​
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$13.50

Step-by-step explanation:

4 0
3 years ago
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Which of the following decimals is equivalent to three and ten hundreths?
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3.01 is the correct answer

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3 years ago
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