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3 years ago

X+2y+z=4 2x-y+4z =-8 -3x+y-2z=-1

Mathematics

1 answer:

WITCHER [35]3 years ago

8 0

Answer

{x,y,z} = {-15/4,7/2,3/4}

Step-by-step explanation:

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9 less than a number n equals 27

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Marissa used the set of ordered pairs below to graph a relation.

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Answer:

(3,2,4).............

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Use the multiplier method to decrease £27 by 8%. You must show your working.

Nitella [24]

Answer:

decrease by 2.16

Step-by-step explanation:

Convert the problem to an equation using the percentage formula: P% * X = Y.

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3 years ago

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Please help, I I beg you please

Tatiana [17]

Answer:

The volume of the cube is $\mathit{\frac{27}{z^3x^{9}}}$ cu in.

Step-by-step explanation:

The Volume of a Cube

Let's have a cube of side length a. The volume of the cube is:

$V=a^3$

The cube of the image has a side length of

$\displaystyle a=\frac{3x^{-3}}{z}\ inches$

Simplifying the expression of the base by converting the negative exponent in the numerator to the denominator:

$\displaystyle a=\frac{3}{zx^{3}}\ inches$

Now find the volume:

$\displaystyle V=\left(\frac{3}{zx^{3}}\ inches\right)^3$

Applying the exponents:

$\displaystyle V=\frac{3^3}{z^3x^{9}}\ inches^3$

$\displaystyle V=\frac{27}{z^3x^{9}}\ inches^3$

The volume of the cube is $\mathbf{\frac{27}{z^3x^{9}}}$ cu in.

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3 years ago

Y=2x+5 y=3x−1 solve by subsitution

loris [4]

Answer:

(6,17)

Step-by-step explanation:

2x+5=3x-1

-3x -3x

-x+5=-1

-5 -5

-x=-6

^divided by -1 on both sides

x=6

y=2x+5

y=(2)(6)+5

y=17

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2 years ago