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3 years ago

2x + 5y + 2z = 0 4x - 7y - 3z = 1 3x - 8y - 2z = -6

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

3 0

<span><span> {x,y,z} = {0,2,-5}</span> I think this is what you need so i hope it helps bro

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Which polynomials are listed with their correct additive inverse? Check all that apply.

mote1985 [20]

Answer:

The Numbers with no Variable (x,y) and an additive sign are the correct additive inverse

Step-by-step explanation:

Im sure this is correct its been a year since ive learned this i tried my best to remember <3

4 0

2 years ago

HELP PLEASE!!!!!!!!!!!

Alona [7]

Answer:

Step-by-step explanation:

Step-by-step explanation:

The volume of a cylinder = πr²h

= 33 cubic inches

The volume of a cone = ¹/3 πr²h

If the cylinder and come share the same radius and height then ‘πr²h’ part of the formulas is the same for both;

It means the difference in proportionality is ¹/3 (because even π is the same across board). The volume of the cone is therefore;

¹/3 (33)

= 11

= 11 cubic inches

Hope this helps!

6 0

2 years ago

Ben's living room is a rectangle measuring 10 yards by 168 inches. By how many feet does the length of the room exceed the width

Elena L [17]

16ft
10*3=30
30*12=360
360-168=192
192/12=16

7 0

2 years ago

You own a lawn care business. in a typical week you drive 600 miles and use 40 gallons of gasoline. gasoline costs $1.25 per gal

iVinArrow [24]

42.50$ ? 21 times 1.25 plus 13 times 1.25 = 42.50?

4 0

3 years ago

The equation 4x2 – 24x + 4y2 + 72y = 76 is equivalent to

DerKrebs [107]

Answer:

Option 4 is correct.

The equation $4x^2 -24x + 4y^2 + 72y = 76$ is equivalent to $4(x-3)^2 + 4(y+9)^2 =436$

Step-by-step explanation:'

Given equation: $4x^2 -24x + 4y^2 + 72y = 76$

First group the terms with x and those with y;

$(4x^2-24x)+(4y^2+72y) = 76$

Next, we complete the squares.

We can do this by adding a third term such that the x terms and the y terms are perfect squares.

For this we must either add the same value on the other side of the equation or subtract the same value on the same side so that the equality is maintained.

⇒ $4(x^2-6x) +4(y+18y) = 76$

$4(x^2 -6x +3^2 -3^2) + 4(y^2 +18y +9^2 -9^2) = 76$

$4(x^2-6x + 3^2) - 36 + 4(y^2+18y +9^2) - 324 = 76$

$4(x-3)^2 + 4(y+9)^2 - 360 =76$

Add 360 on both sides we get;

$4(x-3)^2 + 4(y+9)^2 =360 +76$

Simplify:

$4(x-3)^2 + 4(y+9)^2 =436$

Therefore, the given equation is equivalent to $4(x-3)^2 + 4(y+9)^2 =436$

5 0

3 years ago