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Elena L [17]
3 years ago
5

Solve the system of equations by elimination: −5x+y+5z=27 5x+5y−4z=−12 −6y−z=−16

Mathematics
1 answer:
VladimirAG [237]3 years ago
7 0

Answer:

no asnwer

Step-by-step explanation:

first step:

-5x+y+5z=27

+ 5x+5y-4z=-12

which is

6y+z=15

add -6y-z=-16

which will be 0=-1

this means that there is no answer and that the statement is false.

hope this helped!

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Help me answer this question.
neonofarm [45]

Answer:

<h2>8 units²</h2>

Step-by-step explanation:

Let side of the square = a

The , Area of square = a²

Now, Midpoint of Diagonal DB is E

And DE = 2 units

So, DB = 2 DE = 2 × 2 = 4 units

Now, using Pythagoras theorem in ∆ BCD

DB² = DC² + BC²

plug the values

{4}^{2}  =  {a}^{2}  +  {a}^{2}

Collect like terms

{4}^{2}  = 2 {a}^{2}

Evaluate the power

16 = 2 {a}^{2}

Swipe the side of the equation

2 {a}^{2}  = 16

Divide both sides of the equation by 2

\frac{2 {a}^{2} }{ 2 }  =  \frac{16}{2}

Calculate

{a}^{2}  = 8

Therefore, The area of the square is 8 sq.units.

Hope this helps..

Best regards!!

3 0
3 years ago
What is the area of this figure?
coldgirl [10]
Answer: 102

-----------------------------------------------

We'll use the formula 
A = h*(b1+b2)/2
where
A = area of trapezoid
h = height
b1 & b2 are the parallel bases

In this case,
b1 = 6+7 = 13
b2 = 21
h = 6

Making the area to be
A = h*(b1+b2)/2
A = 6*(13+21)/2
A = 6*(34)/2
A = 204/2
A = 102

Side Note: We don't use the slanted side of 10 cm at all

3 0
3 years ago
What is |3| ????????????
Natalija [7]

Answer:

3

Step-by-step explanation:

|3| means take the non-negative value of what is inside the absolute value

|3| = 3

5 0
2 years ago
Identify GCF 4x^2y-8x
pogonyaev

Answer:

The GCF for the numerical part is 4 . The factors for x2

Step-by-step explanation:

3 0
3 years ago
What is the GCF of 27w^4, 45w^2, 18w^5​
solong [7]

Step-by-step explanation:

THE G.C.F IS 9W^2 AS ALL THE THREE MONOMIALS CAN ONLY BE DIVIDED BY IT..AFTER THAT IT WILL CHANGE IN DECIMAL/FRACTIONAL FORM.

6 0
3 years ago
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