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3 years ago

y equals x + z + 5 Z equals -3 y - 3 2x minus y equals negative 4 How can i solve using 3 variable systems of equation

1 answer:

8 0

To solve a set of linear equations in 3 variables, you need 3 equations. As far as I can tell, you have 2 equations here, so the best you can do is write expressions for 2 of the variables in terms of the third.

If you have
x +z +5z = -3y -3
3x -y = -4
Then you can rewrite as
x = -1.5 -0.6z
y = -0.5 -1.8z

_____
You can get this by any of the usual methods of solving linear equations. Just treat the system as two equations in x and y with the z terms on the right side of the equal sign:
x +3y = -3 -6z
3x -y = -4

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Match the following items by evaluating the expression for x = -2.

solong [7]

Answer:

see below

Step-by-step explanation:

x^-2 = 1/x^2 Let x = -2 1/ (-2)^2 = 1/4

x^-1 = 1/x^1 Let x = -2 1/ (-2)^1 = 1/(-2) = -1/2

x^0 = 1

x^1 = x Let x = -2 (-2)

x^2 = Let x = -2 (-2)^2 = 4

4 0

3 years ago

Read 2 more answers

Jordan will hike the trail shown at a rate of mi/h. Write a linear equation to represent the distance Jordan still has to walk

agasfer [191]

Answer:

y = (-mi/h)x + b

y = total distance left to cover

-mi/h = speed at wich he is covering ground

b = the total distance to cover from start to finish

Step-by-step explanation:

Slope Intercept form without other variables filled is shown like this with mx being the slope and b being the y intercept

y = mx + b

all we need to do is fill in known variables with hours multiplied by x represented as m...

y = (-mi/h)x + b

note the negative symbol, this shows that the higher that miles an hour (mi/h) aka speed is, the more distance he will cover REDUCING the distance to cover faster meaning the line will slope DOWNWARD

b would be the the total distance that he has started with, meaning on the point where the line crosses the y axis, the number it crosses at will represent how much he has started with

7 0

2 years ago

Simplify the expression: (3 − 4i) + (7 − 6i). 4 − 2i 4 − 10i 13 − 2i 10 − 10i

yulyashka [42]

Equivalent expressions are expressions of equal values

The simplified expression of (3 - 4i) + (7 - 6i) is $10- 10i$

The expression is given as:

$(3 - 4i) + (7 - 6i)$

Remove brackets in the above expression

$3 - 4i + 7 - 6i$

Rewrite the expression by collecting the like terms

$3 + 7- 4i - 6i$

Next, evaluate the like terms

$10- 10i$

Hence, the simplified expression of (3 - 4i) + (7 - 6i) is $10- 10i$

Read more about equivalent expressions at:

brainly.com/question/2972832

7 0

3 years ago

Please help this is due?? I will give brainliest

iren [92.7K]

Answer:

The Supersmack gum has a volume of $V=6.75\pi$ cm^3 or $V=21.2057$ cm^3. So, Supersmack's cylindrical bubble gum has more actual gum than the Megapop gumball

Step-by-step explanation:

Assuming that the radius of the Megapop gumball is 1.5 (the same diameter as Supersmack)

The volume of the cylinder's equation can be written as

$V=\pi (1.5^{2})(3 )$

This simplifies to

$V=6.75\pi$ cm^3 or $V=21.2057$ cm^3

The volume of the gumball's equation can be written as

$V=\frac{4}{3} \pi (1.5)^{3}$

This simplifies to

$v=4.5\pi$ cm^3 or $V=14.1371$ cm^3

The Supersmack gum has a volume of $V=6.75\pi$ cm^3 or $V=21.2057$ cm^3. So, Supersmack's cylindrical bubble gum has more actual gum than the Megapop gumball

4 0

3 years ago

She took the escalators up to the gym. This is an example of ... verbal irony situational irony dramatic irony

kati45 [8]

Answer:

situational irony

its in a situation

5 0

4 years ago