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3 years ago

Quick TIMED does anyone know this algebra 2 question? Will give brainiest

Mathematics

2 answers:

salantis [7]3 years ago

8 0

It is the third one because of two things:

1. The negative in front of the function.

2. The +8 at the end.

The third one is the only one that matches with the original function.

USPshnik [31]3 years ago

7 0

I think it is the third one

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Find the solution to the following system of linear

mrs_skeptik [129]

Step-by-step explanation:

$y = 4x - 4 \\ x + y = 11 \\ x + 4x - 4 = 11 \\ 5x = 15 \\ x = 3 \\ y = 4 \times 3 - 4 \\ y = 8$

8 0

3 years ago

Plz do this all plz

Taya2010 [7]

Answer:

I don't know search it up I picked B

okay it's 5 and I'm

6 0

3 years ago

Help please and thanks! I always give brainliest!

Tju [1.3M]

Answer:

x=18, y=9

Step-by-step explanation:

The lines of y+3 and 12 look equal to each other. So do x-3 and 15. Because of this, we set each equal to each other and solve.

solving for x:

x-3 = 15

+ 3 +3

x=18

solving for y:

y+3=12

- 3 -3

y=9

hope this helps!!!

6 0

2 years ago

Read 2 more answers

Hello, I am currently very stuck with this problem and I am unsure as to how I would solve it.

borishaifa [10]

We have the equation

$20y=x^2-10-15$

Let's complete the square, to do it let's add and subtract 25 on the right side

$\begin{gathered} 20y=x^2-10-15+25-25 \\ \\ 20y=(x-5)^2-15-25_{} \\ \\ 20y=(x-5)^2-40 \\ \\ \end{gathered}$

Now we can have y in function of x

$\begin{gathered} y=\frac{1}{20}(x-5)^2-2 \\ \\ \end{gathered}$

Now we can already identify the vertex because it's in the vertex form:

$y=a(x-h)+k$

Where the vertex is

$(h,k)$

As we can see, h = 5 and k = -2, then the vertex is

$(5,-2)$

Now we can continue and find the focus, the focus is

$\mleft(h,k+\frac{1}{4a}\mright)$

We have a = 1/20, therefore

$\begin{gathered} \mleft(5,-2+5\mright) \\ \\ (5,3) \end{gathered}$

The focus is

$(5,3)$

And the last one, the directrix, it's

$y=k-\frac{1}{4a}$

Then

$\begin{gathered} y=-2-5 \\ \\ y=-7 \end{gathered}$

Hence the correct answer is: vertex (5, -2); focus (5, 3); directrix y = -7

5 0

1 year ago

How do you divide 2/10 by 3/4? Please help!

Ray Of Light [21]

Answer:

8/30

Step-by-step explanation:

Dividing fractions is almost the same as multiplying to do it you just have to flip the second fraction and change the division sign to a multiplication sign like this,

2/10×4/3

then from there, you have to multiply the top numbers and the bottom numbers

2×4=8

10×3=30

then put them together

8/30

4 0

3 years ago