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2 years ago

Plzzz help meee i need helpppp

Mathematics

1 answer:

Nuetrik [128]2 years ago

6 0

Not enough detail sorry can't help

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PLEASE HELP, and dont forget to show work!

weeeeeb [17]

Answer: -rad7, +rad7

Explanation:
- Divide the equation by 6 (x^2-7=0)
- Add 7 (x^2=7)
- Square root x to find solutions (x=rad7)
- Dont forget the radical means that there are two solutions!

6 0

2 years ago

If f(x) = 5x + 3x² - 7x

Novay_Z [31]

Answer:

the answer is going to be A. -6x - 14 x+ 6

4 0

2 years ago

What is the square number of 13 27 81 21 43 48 23 39 45

Setler [38]

The given numbers are 13, 27, 81, 21,43, 48,23,39,45.

Square number is that number which is a perfect square means if you multiply a number by itself the number you obtained is a perfect square i.e it's square root is a natural number.

√13=not a natural number

√27=√3×√3×√3=3√3=irrational number

√81=√9×√9=9=a natural number

√21=not a natural number

√43=not a natural number

√48=4√3=not a natural number

√23=not a natural number

√39=not a natural number

√45=3√5=not a natural number

So, out of following numbers 13 27 81 21 43 48 23 39 45→81 is the only square number.

8 0

2 years ago

Read 2 more answers

Find the median of the data set: 27, 88, 41, 80, 60, 13, 74, 33, 80, 91, 80.

jasenka [17]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

An on-demand printing company has monthly overhead costs of $1,900 in rent, $450 in electricity, $80 for phone service, and $230

kotegsom [21]

Answer:

$40

It means that when an infinite number of pages are printed in a month then the fixed cost will be negligible.

Step-by-step explanation:

Given that:

Monthly overhead costs in rent = $1900

Costs in electricity = $450

Costs for phone service = $80

Costs for advertising and marketing = $230

Printing cost per thousand pages = $40

If number of pages printed are $x$ thousand then cost of printing for $x$ thousand pages = $40 $x$

Average cost to print $x$ thousand pages can be given as:

(Total fixed cost + Total cost of printing $x$ thousand pages) divided by $x$

$\dfrac{2660+40x}{x}$

Now, it is given that an infinite number of pages are printed in a month, and we have to find the value that average cost would approach to.

$\lim_{x \to \infty} (\dfrac{2660+40x}{x})$

Let us solve the above limits.

$\Rightarrow \lim_{x \to \infty} (\dfrac{2660}x+\dfrac{40x}{x})\\\Rightarrow \lim_{x \to \infty} (\dfrac{2660}x)+40\\\Rightarrow 40+\lim_{x \to \infty} (\dfrac{2660}x)$

When

$x\rightarrow \infty\Rightarrow \frac{2660}{x} \rightarrow 0$

Putting the value in the limits, we get:

Average cost per thousand pages month would approach to $\rightarrow \$40$

It means that when an infinite number of pages are printed in a month then the fixed cost will be negligible.

3 0

2 years ago