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3 years ago

7

What are x,y, and z if x+y+4z=5, -2x+2z, 3x+y+2z=-1, i am desperate

1 answer:

natulia [17]3 years ago

6 0

Answer:

how I learned it in school was that the variable had to always equal something, so you would have to put on the side or where ever x=(a number) and also you multiply those numbers cause no sign would mean multiply (I'm so sorry if it's not write though, I hope I could help you a little)

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What is the slope of the line shown below?

Anton [14]

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Slope = 3

Step-by-step explanation:

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3 years ago

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3 years ago

Z=a/b+c/d solve for A

PilotLPTM [1.2K]

Answer: $a=\frac{b(zd-c)}{d}$

Step-by-step explanation:

Having the following equation given in the exercise:

$z=\frac{a}{b}+\frac{c}{d}$

You can solve for "a" following this procedure:

1. You can apply the Subtraction property of equality and subtract $\frac{c}{d}$ from both sides of the equation:

$z-(\frac{c}{d})=\frac{a}{b}+\frac{c}{d}-(\frac{c}{d})\\\\z-\frac{c}{d}=\frac{a}{b}$

2. Now you must subtract the terms on the left side of the equation. Notice that the Least Common Denominator is "d". Then:

$\frac{zd-c}{d}=\frac{a}{b}$

3. Finally, you can apply the Multiplication property of equality and multiply both sides of the equation by "b". So, you get:

$(b)(\frac{zd-c}{d})=(\frac{a}{b})(b)\\\\a=\frac{b(zd-c)}{d}$

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3 years ago

The graph of a parabola has an axis of symmetry of and an intercept at . It passes through the point . What is the equation repr

Eddi Din [679]

Answer:

The answer is B! All I did was take a screenshot of your question and put on my page.

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3 years ago

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Answer:

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2 years ago