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2 years ago

Don’t understand this @ all

Mathematics

1 answer:

irina1246 [14]2 years ago

4 0

Pair (3,11) should be removed because the domain x should never be repeated in a function.
Plz mark me as brainliest? Hope it helps.

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Pls help me, I dont get the question. Polynomials

AnnZ [28]

The given polyn. is not in std. form. To answer this question, we need to perform the indicated operations (mult., addn., subtrn.) first and then arrange the terms of this poly in descending order by powers of x:

P(x) = x(160 - x) - (100x + 500)

When this work has been done, we get P(x) = 160x - x^2 - 100x - 500, or

P(x) = -x^2 + 60x - 500

So, you see, the last term is -500. This means that if x = 0, not only is there no profit, but the company is "in the hole" for $500.

6 0

2 years ago

Jordan wrote the following description. Three fewer than one fourth of x is 12. Write an equation to represent the description??

VMariaS [17]

Answer:

1/4x - 3 = 12

Step-by-step explanation:

When it says "three fewer," it means subtract three from one fourth of x. "Is" always means the equal sign. Knowing this, we get the equation:

1/4x - 3 = 12

8 0

2 years ago

skelet666 [1.2K]

Answer:

option D. 126 cm

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

In this problem

Triangles PQR and XYZ are similar by AA Similarity Theorem

$\frac{XY}{PQ}=\frac{YZ}{QR}=\frac{XZ}{PR}$

Let

z ---> the scale factor

$z=\frac{XY}{PQ}$

substitute the given values

$z=\frac{30}{5}=6$

step 2

Find the perimeter of triangle XYZ

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

Let

z ----> the scale factor

p_1 ----> the perimeter of triangle XYZ

p_2 ---> the perimeter of triangle PQR

$z=\frac{p_1}{p_2}$

The perimeter of triangle PQR is

$p_2=5+10+6=21\ cm$

we have

$z=6\\p_2=21\ cm$

substitute

$6=\frac{p_1}{21}$

$p_1=6(21)=126\ cm$

therefore

The perimeter of triangle XYZ is 126 cm

5 0

3 years ago

kevin is awarded a penalty shot. He will either score a goal or not score a goal. Are both outcomes equally likely? explain

Sidana [21]

Answer:

Yes.

Step-by-step explanation:

Both outcomes are equally likely as he has a 50/50 chance of making a goal if there are no interruptions.

5 0

2 years ago

Read 2 more answers

X+2x=180 i need help on this

viktelen [127]

x+2x = 180

add like terms

3x=180

divide both sides by 3

x=60

Answer: x=60

4 0

2 years ago

Read 2 more answers