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labwork [276]
3 years ago
10

Help neeeddded........

Mathematics
2 answers:
Sloan [31]3 years ago
7 0

Answer:

I believe the correct answer is D.

Step-by-step explanation:

sergejj [24]3 years ago
5 0

Answer:

D 7a - 11b

Step-by-step explanation:

9a- b -2a - 10b

7a - b -10b

7a - 11b

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Graph the image of this triangle after a dilation with a scale factor of 2 centered at the origin.
Svet_ta [14]

Answer:  

Since, the coordinates of the given triangle are (0,0), (4,-4) and (-4,-2)

In the dilation by the scale factor k with centered at origin,

(x,y)\rightarrow (kx,ky)

Thus, If the dilation occurs by the scale factor of 2 with centered at origin,

New coordinates of the triangles are,

(0,0)\rightarrow (2\times 0, 2\times 0)

(-4,4)\rightarrow (2\times -4, 2\times 4)

(-4,-2)\rightarrow (2\times -4, 2\times -2)

Thus, the coordinates of new triangle are,

(0,0) ( -8, 8) and (-8,-4)

7 0
3 years ago
Can someone please help me(20 points will give brainliest!!!)
erica [24]
-3f im pretty sure…
3 0
2 years ago
F(x)=x^2+9x-16<br><br><br> What is vertex <br><br> Axis of semetry
UNO [17]

Answer:

axis of symmetry is x=\frac{-9}{2}.

The ordered pair of the vertex is (\frac{-9}{2},\frac{-145}{4}).

Step-by-step explanation:

Your function is a quadratic.

Compare x^2+9x-16 to ax^2+bx+c.

You should see that a=1,b=9,c=-16.

The x-coordinate of the vertex or the axis of symmetry since the axis symmetry goes through the vertex can be found by computing \frac{-b}{2a}.

So here we go!

The axis of symmetry is x=\frac{-9}{2(1)}=\frac{-9}{2}.

When you write your axis of symmetry be sure to write it as an equation.

That is the axis of symmetry is x=\frac{-9}{2}.

Now that was also the x-coordinate of your vertex.  To find the corresponding y-coordinate of the vertex, plug your value for x into

y=x^2+9x-16.

y=(\frac{-9}{2})^2+9(\frac{-9}{2})-16

Put into calculator:

y=\frac{-145}{4} when x=\frac{-9}{2}

The ordered pair of the vertex is (\frac{-9}{2},\frac{-145}{4}).

5 0
3 years ago
Read 2 more answers
Brian, Chris, and Damien took a math test that had 20 questions. The number of questions Brian got right is 14 more than 1/4 the
Levart [38]
B = 1/4c + 14
d = 5/4c - 2
b = d

1/4c + 14 = 5/4c - 2 ....multiply by 4
c + 56 = 5c - 8
56 + 8 = 5c - c
64 = 4c
64/4 = c
16 = c <== Chris

b = 1/4c + 14.....b = 1/4(16) + 14.....b = 4 + 14....b = 18 <== Brian
d = 5/4c - 2....d = 5/4(16) - 2.....d = 20 - 2.....d = 18 <== Damien

solution : Brain and Damien answered 2 more questions correctly then Chris did. <===
7 0
3 years ago
Stacy's Weekly salary is $1516.52 what is her annual salary?
Zanzabum

Answer:

Does she get paid once every week?

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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