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3 years ago

5/7 = -x/8 i dont undstant this, if someone could help me it would be greatly apprecaited

2 answers:

7 0

You can use cross-products to solve this problem. For instance, this expression would be written as 5(8)= 7(-x), or 40= -7x. What you'd do then is simplify the expression by dividing both sides of the equation by the coefficient of x, such that you'd isolate x and have the value of x.

Whitepunk [10]3 years ago

4 0

5/7 = -x/8

First: What you would do is cross multiply. You would multiply 7 and -x, then 8 and 5.
Your equation should then look like: 40= -7x
Next: You would divide each side by -7 so you can get your x alone.
You would get: x= -5.71... < That would be your answer

HOPE THIS HELPS! ^_^

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Answer:

The equation in standard form is:

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Step-by-step explanation:

The slope-intercept form of the line equation

$y = mx+b$

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$y=-\frac{R}{P}x\:+\:\left(-R\right)$

$y=-\frac{R}{P}x\:-R$

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$y=-\frac{R}{P}x\:-R$

Converting the slope-intercept form of the line equation into standard form

As we know that the equation in the standard form is

Ax+By=C

where x and y are variables and A, B and C are constants

$y=-\frac{R}{P}x\:-R$

so converting into standard form

Multiply the equation by P

Py = -Rx - PR

Add -Rx to both sides

Rx+Py = -Rx - PR + -Rx

Rx+Py = -PR

Therefore, the equation in standard form is:

Rx+Py = -PR

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