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kirill [66]
3 years ago
14

2x2 + 6x - 20 = 0 factor

Mathematics
2 answers:
lara31 [8.8K]3 years ago
5 0
If your solving for x it would be 2 and -5
vitfil [10]3 years ago
4 0
Would it be -10 though
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To obtain the area of a sector, what fraction is multiplied by the area of a circle (A = πr2)?
romanna [79]
Let r be a radius of a given circle and α be an angle, that corresponds to a sector.

The circle area is A=\pi r^2 and denote the sector area as A_1. 
Then  \dfrac{A_1}{A}= \dfrac{\alpha}{2\pi}  (the ratio between area is the same as the ratio between coresponding angles).

A_1=\dfrac{\alpha}{2\pi} \cdot A=\dfrac{\alpha}{2\pi} \cdot \pi r^2= \dfrac{r^2\alpha}{2}.

6 0
3 years ago
Dawn bought 12 grams of chocolate. she ate half of the chocolate. How many grams of chocolate did she eat?
andre [41]
Half of twelve is six.

She ate 6 grams.
7 0
3 years ago
Read 2 more answers
Which of the following function is graphed?
Thepotemich [5.8K]

Answer:

D

Step-by-step explanation:

Try to remember this formula.

y=a|b(x-c)|+d

Where a is the vertical multiplier, b is the horizontal multiplier, c is the x coordinate of the vertex, and d is the y coordinate of the vertex.

Since the vertex on the graph is (2,3), c and d have to be 2 and 3.

Also, there are no vertical/horizontal stretches so the a and b values stay at 1.

The final equation would come out to y=|x-2|+3

4 0
3 years ago
Factor the GCF out of the trinomial on the left side of the equation. (2 points: 1 for the GCF, 1 for the trinomial)2x^2 + 6x -
iren2701 [21]

Answer:

2(x+6)(x-3)

Step-by-step explanation:

Factor the GCF out of the trinomial on the left side of the equation.

2x^2 + 6x - 36 =2(x^2 + 3x - 18)

Greatest common factor of 2, 6, 18 is 2

so GCF is 2

divide each term when we take out GCF 2

so 2(x^2 + 3x - 18)

now factor the trinomial

product is -18 and sum is +3

6 times -3 is -18  and 6-3=3

2(x^2+3x-18)\\2(x+6)(x-3)

4 0
3 years ago
For a Chinese New Year celebration, James and Zhou are making a dragon costume similar to the one shown above.
Lilit [14]

Answer:

C. 24 meters

Step-by-step explanation:

Given:

Total length of fabric required for the costume = 56.6 m

Length of fabric Zhou already has = 15 m

Length of fabric James just purchased = 17.6 m

To find how much more length of fabric is required to make the complete costume.

Solution:

<em>Let the length of fabric in meters still required be</em>  = x

<em>The total length can be given as :</em>

⇒ (15+17.6+x)\ m

⇒ (32.6+x)\ m

The total fabric required = 56.6 m

So, the equation to find x will be:

32.6+x=56.6

Subtracting both sides by 32.6

32.6+x-32.6=56.6-32.6

∴ x=24

Thus,<u> 24 meters</u> of fabric is still required to make the costume.

5 0
3 years ago
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