All categories

2 years ago

Solve the system of equations y=5x-1 y=9x-9

Mathematics

1 answer:

Leto [7]2 years ago

7 0

Answer:

Look at the equations:

−

and

Because both equations equal (y), they both equal the same.

If an equations says "

−

" , that means we can replace (y) with

−

Therefore when i take the equation:

, we can replace (y) to get:

−

Now isolate (x):

−

⇔

−

⇔

−

⇔

−

You might be interested in

Solve the system using elimination. 3x – 3y = 24 2x + 2y = 4 The solution is |

LiRa [457]

Answer:

the value of x=5 and y = -3

7 0

3 years ago

there were twenty one adults in line at a movie theater.That is three times the number of children in line. how many children we

V125BC [204]

You would do 21 divided by 3 and get 7.

The answer is 7 kids are in the line.

Please vote my answer the brainiest if it was helpful!!

7 0

3 years ago

A perfect square trinomial can be represented by a square model with equivalent length and width. Which polynomial can be repres

lina2011 [118]

The correct answer is
$A) x^2 - 6x + 9$

In fact, this is a trinomial of the form $ax^2-bx+c$ , whose solutions are given by
$x_{1,2}= \frac{-b\pm \sqrt{b^2 -4ac} }{2a}$
Using this formula for the trinomial of the problem, we find:
$x1,2= \frac{6 \pm \sqrt{6^2-4\cdot 1\cdot 9}}{2} =3$
we see that this trinomial has two coincident solutions (x=3 with multiplicity 2). This means that it can be rewritten as a perfect square, in the following form:
 $(x-3)^2$

8 0

2 years ago

Read 2 more answers

What is the argument of -5\sqrt{3}+ 5i?

Shtirlitz [24]

Answer:

150 degrees

Step-by-step explanation:

Graphing the complex number we see the angle terminates in the second quadrant. This means the argument, the angle, will be between 90 degrees and 180 degrees.

So if we create a right triangle with that point after graphing it. We see the height of that triangle is 5 because that is the imaginary part. The base of that triangle has length $5\sqrt{3}$ . The problem is this doesn't give us any part of the angle we want, but it does give us the complementary of the part of the angle that is in second quadrant.