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3 years ago

Describe the function

Mathematics

2 answers:

Vinil7 [7]3 years ago

8 0

The correct answer is b

Anettt [7]3 years ago

6 0

Your answer is c

Hope this helps:)

Plz rate branliest ❤️

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How do you solve these equations? I don't want you to answer all of them, just tell me how to solve each type of equation on the

miss Akunina [59]

Answer:

8. Identify the common denominator; express each fraction using that denominator; combine the numerators of those rewritten fractions and express the result over the common denominator. Factor out any common factors from numerator and denominator in your result. (It's exactly the same set of instructions that apply for completely numerical fractions.)

9. As with numerical fractions, multiply the numerator by the inverse of the denominator; cancel common factors from numerator and denominator.

10. The method often recommended is to multiply the equation by a common denominator to eliminate the fractions. Then solve in the usual way. Check all answers. If one of the answers makes your multiplier (common denominator) be zero, it is extraneous. (10a cannot have extraneous solutions; 10b might)

Step-by-step explanation:

For a couple of these, it is helpful to remember that (a-b) = -(b-a).

$\dfrac{5}{x+2}+\dfrac{25-x}{x^2-3x-10}=\dfrac{5(x-5)}{(x+2)(x-5)}+\dfrac{25-x}{(x+2)(x-5)}\\\\=\dfrac{5x-25+25-x}{(x+2)(x-5)}=\dfrac{4x}{x^2-3x-10}$

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$\displaystyle\frac{\left(\frac{x}{x-2}\right)}{\left(\frac{2x}{2-x}\right)}=\frac{x}{x-2}\cdot\frac{-(x-2)}{2x}=\frac{-x(x-2)}{2x(x-2)}=-\frac{1}{2}$

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$\dfrac{3}{x-1}+\dfrac{6}{x^2-3x+2}=2\\\\\dfrac{3(x-2)}{(x-1)(x-2)}+\dfrac{6}{(x-1)(x-2)}=\dfrac{2(x-1)(x-2)}{(x-1)(x-2)}\\\\3x-6+6=2(x^2-3x+2) \qquad\text{multiply by the denominator}\\\\2x^2-9x+4=0 \qquad\text{subtract 3x}\\\\(2x-1)(x-4)=0 \qquad\text{factor; x=1/2, x=4}$

Neither solution makes any denominator be zero, so both are good solutions.

8 0

3 years ago

Out of 18 cookies, 1/3 are chocolate chip. How many of the cookies are chocolate chip?

ivann1987 [24]

Answer:

Step-by-step explanation:

that´s easy its basically dividing 3 by 18 which is 6

6 0

3 years ago

Solve the systems of equation by graphing (Picture provided)

11Alexandr11 [23.1K]

Answer:

Option b

Step-by-step explanation:

The following system of linear equations is shown

$x + y = 8\\2x + y = 3$

These are two different slope lines.

We find the cut points of both lines with the axes.

$x + y = 8$

Cut with the x axis. (y = 0)

$x = 8$

Cut with the y axis. (x = 0)

$y = 8$

...................................................................

$2x + y = 3$

Cut with the x axis. (y = 0)

$2x = 3\\x = 1.5$

Cut with the y axis. (x = 0)

$y = 3$

The solution to this system will be a point for which it is fulfilled that:

$x + y - 8 = 2x + y-3$

In the image, different graphs with intersections are shown.

Locate among the options, one that shows the two lines of the system of equations according to their intersections with the x and y axes.

Option b is the only one that shows the graph of the lines

$x + y = 8\\2x + y = 3$

Then, The point of intersection of both lines in the graph is:

(-5, 13)

Therefore the solution of the system of equations is: (-5, 13)

You can verify this by replacing the point in the relationship

$x + y - 8 = 2x + y-3\\\\(-5) +13 -8 = 2 (-5) +13 -3\\\\0 = 0$

Equality is satisfied

Finally the answer is the option b

8 0

3 years ago

Thomas neighbor is fixing a section of his walkway he has 32 bricks that he is placing in 8 equal rows how many breaks will Tom

stich3 [128]

So if there are 8 bricks in a column, what we can say is, how many 8's will equal 32?

So basically,

8(?) = 32

And then if you divide both sides by 8, you get ? = 4.

So there are 4 bricks in each row.

8 0

3 years ago

Find the quotient. 4,610 ÷ 16<br><br><br>show work please <3.

Zinaida [17]

Answer:

2305/8

Step-by-step explanation:

6 0

3 years ago