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anygoal [31]
3 years ago
15

Mia is factoring the polynomial x2 + 4x – 12. She uses the steps shown. In which step did Mia make an error?

Mathematics
2 answers:
alekssr [168]3 years ago
9 0

she make an error in the last step

Gala2k [10]3 years ago
3 0
While Mia's answer is not shown, the <u>correct process</u> is:

This trinomial is in the form ax²+bx+c.  In this case, x=1.  We want factors of c (in our trinomial, -12) that sum to b (in our trinomial, 4).  

To make -12, we can multiply:
1(-12)
-1(12)
2(-6)
-2(6)
3(-4)
-3(4)

The correct set of factors are the ones that sum to positive 4.  The only ones that do this are -2 and 6.  These are the roots, so factored form is:
(x-2)(x+6).
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15
Makovka662 [10]

Answer:

Option A ( -3/2 , \frac{-3\sqrt{3} }{2} )

Step-by-step explanation:

  • According to Question, The Spinner Rotate 600* Thus after Completing 360* it Comes Exactly Where It Started . Now again rotate It 180* .
  • Now We Are on ( -X axis ) & Completed 360*+180*=540* Rotation
  • Now After Rotate It 60* More we come in Third Quadrant & Here In Third Quadrant Only Tangent & Cotangent Is Positive .(Sine & Cosine is Negative)  

(For Diagram, Please Find in attachment)

Now In Triangle OAB

  • Cos60* = OA / OB

        1/2 = -X / 3 Thus X= -3/2

  • Sin60* = AB / OB

        \sqrt{3}/2 = -Y / 3 Thus Y = -\sqrt{3} * 3 /2

6 0
3 years ago
A typical middle-income household in 1980 earned $34,757. A similar household in 2009 earned $38,550. What was the relative incr
aev [14]
The answer is that 38.5550
4 0
3 years ago
A tile pattern has 5 tiles in Figure 0 and adds 7 tiles in each new figure. Write the equation of the line that represents the g
Paraphin [41]

Answer: y = 5 + 7x

Step-by-step explanation:

You start at 5, then add 7 for each figure.

0 figures: 5 + 7(0)

1 figures: 5+7(1)

23 figures: 5+7(23)

And so on.

8 0
2 years ago
Solve for x in the equation -- x = 12
mars1129 [50]
X=-12

You have to divide by -1
4 0
3 years ago
How to do question 15, 16 17 (for question 17 explain please !)
topjm [15]
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