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4 years ago

Determine the intervals on which the function is increasing, decreasing, and constant.

Mathematics

2 answers:

Salsk061 [2.6K]4 years ago

7 0

A is your answer I think hope I helped

aliina [53]4 years ago

5 0

Answer:

b. Increasing x > 0; Decreasing x < 0

Step-by-step explanation:

We have been given graph of a function. We are asked to find the intervals on which our function is increasing and decreasing.

We know that when graph of function is going upwards from left to right then the graph is increasing.

When graph of function is going downwards from left to right then the graph is decreasing.

Upon looking at our given graph, we can see that for x values less than 0, the graph is going downwards from left to right, therefore, our function is decreasing on interval $x$ .

We can see from our given graph that for x values greater than 0, the graph is going upwards from left to right, therefore, our function is increasing on interval $x>0$ .

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How can i solve this? I've looked at countless videos and nothing helps.

Andrej [43]

Let $x$ be the number of lower-level tickets sold, and $y$ the number of upper-level tickets sold.

Now, if the theater sells 350 tickets total, that means the number of lower-level and upper-level tickets that got sold should add up to 350, so one equation in the system is

$x+y=350$

You also know that the theater earns $10250 in sales, so if each lower-level ticket costs $35, and each upper-level ticket costs $25[/tex], this means $35x$ represents the amount of money made from selling lower-level ticekts, and $25y$ represents the amount of money made from selling upper-level tickets. You get the second equation in the system,

$35x+25y=10250$

So the system is

$\begin{cases}x+y=350\\35x+25y=10250\end{cases}$

Any one of the methods listed in the second part works in solving this system (though I'm not sure what "variable" refers to), but I think substituting involves the least work.

Solve the first equation for either variable; I'll choose $x$ .

$x+y=350\implies x=350-y$

Now substitute this into the second equation for $x$ , then solve for $y$ .

$35(350-y)+25y=10250\implies 10y=2000\implies y=200$

So 200 upper-level seats were sold. Meanwhile, since $x+y=350$ , this means

$x+200=350\implies x=150$

so that 150 lower-level tickets were sold.

6 0

3 years ago

What's the answer for (2+i)(i+2i)?

slava [35]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{3 {i}^{2} + 6i}}}}}$

Step-by-step explanation:

$\sf{(2 + i)(i + 2i)}$

Use the distribute property to multiply each term of the first binomial by each term of the second binomial.

⇒ $\sf{2(i + 2i) + i(i + 2i)}$

⇒ $\sf{2i + 4i + {i}^{2} + 2 {i}^{2} }$

Collect like terms

⇒ $\sf{3 {i}^{2} + 6i}$

Hope I helped!

Best regards!

4 0

4 years ago

10x8x38x12/10 PLSEASEE HELP WILL MARK BRAINLIEST

Talja [164]

Answer:

3648

Step-by-step explanatio

7 0

3 years ago

Read 2 more answers

A 100-pound watermelon is out in the sun. 99% of the watermelon's weight is water. After a few hours, 98% of the watermelon's we

Contact [7]

100 lbs = 1 lb of melon 99 lb water

Let "x" be weight of water:

percentage = weight of water / (1 lb melon + water)
.98 = x / (1 lb melon + x)
.98 = x / 1 +x
.98 + .98x = x
.98 = .02x
x = 49

49 lbs of water
1 lb melon + 49 lbs water = 50 lbs total

49 / 50 = 98%
Therefore, 50 POUNDS of water evaporated

7 0

3 years ago

Find the absolute maximum and minimum values of the function f(x, y) = xy2 − y 2 − x on the region d where d = {(x, y) | x ≥ 0,

Serjik [45]

Your answer is b because something

6 0

4 years ago