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3 years ago

14

2x2 + 6x - 20 = 0 factor

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