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3 years ago

H E L P P L E A S E P E O P L E.

Mathematics

1 answer:

AleksandrR [38]3 years ago

5 0

Answer:

Noo la chimba socio eso es culo de dificil xd.

Step-by-step explanation:

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No files please! thanks

BigorU [14]

Answer:

y = $-\frac{1}{3}$

$2\frac{2}{3}=x$

Step-by-step explanation:

To solve a system of equations, solve one or both of the equations for the same variable. Then multiply one of the equations such that the coefficients of one variable are the additive inverse of the variable in the other equation. After doing so, add the two equations, then solve for the other variable using inverse operations. Finally, substitute the value of the other variable into one of the original equations in the system and solve for the unknown variable.

2x + y = 3

y = x - 2

First, manipulate the first equation such that the equation is solved for (y), this can be done using inverse operations,

y = 3 - 2x

y = x - 2

Now multiply the second equation by (2) so that the (x) coefficients are additive inverses of each other,

y = 3 - 2x

2y = 2x - 4

Add the equations,

3y = -1

Inverse operations,

3y = -1

/3 /3

y = $-\frac{1}{3}$

Now back solve, substitute the value of (y) into the equation and solve for (x),

$y=x-3\\$

Substitute,

$(-\frac{1}{3})=x-3$

$2\frac{2}{3}=x$

5 0

3 years ago

Which trinomial is a perfect square trinomial? a2 – 18a + 36 a2 – 16a + 64 a2 – 8a + 64 a2 – 6a + 36

Komok [63]

Answer:

$a^2-16a+64$

Step-by-step explanation:

we have the options

$a^2-18a+36\\a^2-16a+64\\a^2-8a+64\\a^2-6a+36$

the one that is a perfect equare tinomial is:

$a^2-16a+64$

because we can rewrite this as follows:

$(a-8)^2$ this is because we know that

$x^2-2xy+y^2=(x-y)^2$

thus

$a^2-16a+64=(x-8)^2$

and the other options cannot be represented as a perfect square trinomial, so the correct answer is:

$a^2-16a+64$

4 0

3 years ago

an object undergoes an acceleration of 8 metre per second square starting from rest find the distance travelled in one second

garik1379 [7]

Answer:

Step-by-step explanation:

Initial velocity (u) = 0,

Uniform acceleration (a) = 8 m/s²

Time (t) = 1 s

Distance travelled in 1 second

= ut + 1/2at²

= 0 + 1/2× 8 ×1²

= 4 m Ans.

7 0

4 years ago

Translate to algebracic expression. the product of seven and four times a number multiplied by three

vagabundo [1.1K]

(7*4)3n is the algebraic expression:)

8 0

3 years ago

Pls help! solve the equation by completing the square. 0= x^2 - 14x

Sedaia [141]

Answer:

B. x= 0,14

Step-by-step explanation

1. 0= x^2 - 14x

2. x^2 - 14x=0

3. (b/2)^2= (-7)^2

4. x^2 - 14x +49= 49

5. (x-7)^2=49

6. x= 0, 14

3 0

3 years ago

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