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3 years ago

Can someone help me out? I can’t make sense of this.

Mathematics

2 answers:

irga5000 [103]3 years ago

8 0

Answer:

a) -4 and 2

b) -2

c) (-∞,∞)

d) [-3,∞)

e) (-1,-3)

f) there isn't, but the relatives are (-5,1) and (3,1)

g) [-1,+∞)

h) (-∞,-1]

hope it helps ;)

slavikrds [6]3 years ago

5 0

Answer:

Range. Its range.

;)

- Alie♥

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The dean of the School of Fine Arts is trying to decide whether to purchase a copy machine to place in the lobby of the building

tigry1 [53]

Answer:

$34,816.60

Step-by-step explanation:

The computation of the maximum amount of cash should willing to pay for the copy machine by using the present value is shown below:

Present value is

$= Incremental\ cash\ flows \times PVIFA\ factor$

where,

Incremental cash flows is $14,000 per year

Discount rate is 10%

And, the number of years is three years

PVIFA factor for 10% at 3 years is 2.4869

Refer to the PVIFA factor table

Now placing these values to the above formula

So, the present value is

$= \$14,000 \times 2.4869$

= $34,816.60

6 0

3 years ago

What is the answer 1. 2. 3. 4.

joja [24]

Answer:

Domain of the function f(x) = cos x : ( - infinity , + infinity)

Step-by-step explanation:

Let the given function f(x) = cos x

We need to find the domain set of the given function f(x) = cos x

Domain is the set of all possible value of x for which the function f(x) is defined.

Now, as the given function f(x) is defined for all the real values of x.

Domain of the function f(x) = cos x : ( - infinity , + infinity)

Hence, Domain : ( -∞ , +∞ )

Also, the graph of the given function f(x) = cos x is attached below :

Now, form the graph also we can see the graph of given function f(x) = cos x can attain all the real values starting from -infinity to +infinity

3 0

3 years ago

Multiply out (x-2y)z-2x(x+z)

VladimirAG [237]

Answer:

-xz - 2x²- 2yz

Step-by-step explanation:

Multiply out (x-2y)z-2x(x+z)

(x - 2y)z - 2x( x + z)

Rearrange

z(x - 2y) - 2x(x + z)

Open bracket by multiplying by letters outside bracket

xz - 2yz - 2x² - 2xz

Collect like terms

xz -2xz - 2x² - 2yz

-xz - 2x² - 2yz

I hope this was helpful, Please mark as brainliest.

8 0

3 years ago

Read 2 more answers

Last year a baseball team paid $20 per bat and $12 per glove spending a total of $1040 this year the prices went up to $25 per b

Sonja [21]

20x + 12y = 1040
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12y' to each side of the equation. 20x + 12y + -12y = 1040 + -12y Combine like terms: 12y + -12y = 0 20x + 0 = 1040 + -12y 20x = 1040 + -12y Divide each side by '20'. x = 52 + -0.6y
thats the first part
then we have
25x + 16y = 1350
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-16y' to each side of the equation.
25x + 16y + -16y = 1350 + -16y
Combine like terms:
16y + -16y = 0 25x + 0 = 1350 + -16y
25x = 1350 + -16y
Divide each side by '25'. x = 54 + -0.64y

7 0

3 years ago

The area of a rectangle is 8x3 + 6x2 - 10x. The width of the rectangle is 2x. Find the length of the rectangle.

Sladkaya [172]

2x multiplies to all numbers:
2x x 8x3 = 16x4
2x x 6x2 = 12x3
2x x -10x = -20x2

Answer: 16x4 + 12x³ - 20x²

Hope this helps :)

4 0

3 years ago