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2 years ago

Answer the question in the image below

Mathematics

1 answer:

riadik2000 [5.3K]2 years ago

4 0

Answer:

$x=1+\sqrt{5} , x=1-\sqrt{5}$

Step-by-step explanation:

exchange y for 1:

$1=x^2-2x-3$

and solve (I used an online calculator - symbolab and mathaway are my favorites).

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Stable electron configurations are likely to contain ____.

klio [65]

A- Stable electron configurations are likely to contain - filled energy sub-levels.

B- How many unpaired electrons are in a sulfur atom (atomic number 16)? Answer is 2

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3 years ago

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While grading her students' most recent quiz on equation solving, Mrs. Jones calculated that approximately forty percent of her

EastWind [94]

The given equation is,

$3(-n+4)+5n=2n$

Part 1:

Solve the above equation for n.

Using distributive property of multiplication,

$\begin{gathered} -3n+3\times4+5n=2n \\ -3n+12+5n=2n \end{gathered}$

Now, group the like terms.

$-3n+5n-2n+12=0$

Now, add the like terms.

$\begin{gathered} -5n+5n+12=0 \\ 0=-12 \end{gathered}$

0=-12 is a false statement.

Since we obtained a false statement, the given equation has no solution.

So, option b is correct.

Part 2:

The option (a) is n=3.

If while solving an equation, a single value is obtained for the variable, then the equation has only a single solution. If n=3 is obtained after solving the equation, then the student should chose option (a) as the answer.

The option (b) is "no solution".

While solving an equation, if we obtain an equation which is mathematically false, then the equation will have no solution. So, no solution is chosen when no value is obtained for n and the final equation is mathematically false.

The option (c) is "infinitely many solutions".

While solving an equation, if we obtain an equation which is mathematically correct such as 0=0, 7=7 etc., then the equation will have infinietly many solutions. So, infinitely many solutions is chosen when no value is obtained for n and the final equation is mathematically correct.

8 0

10 months ago

I don't need an answer anymore.

Ghella [55]

Is this a question? Or what is the question if you first said it?

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3 years ago

Two inches is approximately _____. 10 cm 5 cm 500 mm .5 m

k0ka [10]

Answer:

5 cm

Step-by-step explanation:

Since 1 inch is 2.5 cm, you'll haft to double that. Making the answer 5 cm.

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3 years ago

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Hunter is bisecting the angle shown. When drawing the arcs centered on points P and Q, why must he keep the compass the same wid

S_A_V [24]

Answer:

The arcs are drawn to find a point on the bisecting ray. If the arcs are the same width, it makes sure that they are equidistant from the points on the rays of the angle. This causes the point to be on the bisecting ray.

Step-by-step explanation:

Bisection of an angle implies dividing the angle into two equal parts. The ray that divides the angle is called a bisector.

The hunter should use the same radius or width to draw the two arcs, using points P and Q as the center interchangeably, so that they would intersect at an equidistant point to P and Q. The point of intersection lies on the bisecting ray of the angle.

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3 years ago