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2 years ago

9

Kendra is buying an outfit that is on sale for 20% off. The original price of the outfit is $109.

2 answers:

Misha Larkins [42]2 years ago

4 0

It could be 64$ because i did division

Alexeev081 [22]2 years ago

3 0

$109 x 20
$109 X 0.2=$21.8
$109-$21.8=$87.20

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PLS HELP:( !! What is an equation of the line

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Answer:

$y = \frac{3}{2} x + 8$

Step-by-step explanation:

The given equation is written in the form of y=mx+c (where m is the gradient and c is the y-intercept).

Thus, gradient of given equation= -⅔

The products of the gradient of perpendicular lines is -1.

(Gradient of line)(-⅔)= -1

Gradient of line

$= - 1 \div ( - \frac{2}{3} ) \\ = \frac{3}{2}$

Hence, m= $\frac{3}{2}$ .

Subst. m= $\frac{3}{2}$ into the equation:

$y = \frac{3}{2} x + c$

To find the value of c, substitute a pair of coordinates into the equation:

When x= -4, y= 2,

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Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

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$\begin{bmatrix}-5x-18y=-28\\ -10x+9y=-11\end{bmatrix}$

$\mathrm{Multiply\:}-5x-18y=-28\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-10x-36y=-56$

$\begin{bmatrix}-10x-36y=-56\\ -10x+9y=-11\end{bmatrix}$

$-10x+9y=-11$

$-$

$\underline{-10x-36y=-56}$

$45y=45$

$\begin{bmatrix}-10x-36y=-56\\ 45y=45\end{bmatrix}$

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$-10x-36\cdot \:1=-56$

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