1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mart [117]
3 years ago
6

How do I set up 37 and 43

Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0
37)

keep in mind that the perimeter of a rectangle is length + length + width + width or P = 2l + 2w, or P = 2(l+w).

we know the perimeter of the box's width and length is 36, therefore then

\bf \stackrel{P}{36}=2(\stackrel{length}{l}+\stackrel{width}{w})\implies 18=l+w\implies \boxed{18-w=\stackrel{length}{l}}
\\\\\\
V(w)=4(w)(18-w)\implies V(w)=-4w^2+72w

check the first picture below.

now, that parabolic graph, goes up up up reaches a U-turn and the back down, so it has a "maximum" point, and that is when the volume is the highest, namely V(w).

\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{lccclll}
V(w) = &{{ -4}}w^2&{{ +72}}w&{{ +0}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
{{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\implies \stackrel{maximum~volume}{0-\cfrac{72^2}{4(-4)}}


43)

is pretty much the same thing, checking the vertex coordinates of the parabola, check the second picture below,

\bf h=64t-16t^2\implies h=-16t^2+64t+0\\\\\\
\textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{lccclll}
h = &{{ -16}}t^2&{{ +64}}t&{{ +0}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
\stackrel{\textit{it takes this many seconds}}{-\cfrac{64}{2(-16)}}\qquad \qquad \stackrel{\textit{it went up this many feet}}{0-\cfrac{64^2}{4(-16)}}

You might be interested in
What is the answer for 528÷2
neonofarm [45]
264



Step by step explanation This is how I got the answer to your question and I gave you the solution I hope this helps you out
5 0
2 years ago
BRAINLIEST!!!!!When evaluating , what will be the exponent of 10 in the product?
garik1379 [7]
You're answer here would be 8
7 0
3 years ago
Read 2 more answers
What is the area of this figure?<br><br> Need it now!!
saw5 [17]

Answer:

The area is 452cm

Step-by-step explanation:

For the big square we have to multiply 15*18 and that is the area so-

15*18=270

Next we multiply 13 and 14

13*14=182

And now we add 270 and 182 to get the total area

270+182=452

7 0
3 years ago
Read 2 more answers
Compare and contrast the absolute value of a real number to that of a complex number.
sveticcg [70]
The absolute value of a real number is a positive value of the number. Which means that the absolute value is the distance from zero of the number line. However, that of the complex numbers is the distance from the origin to the point in a complex plane. 
4 0
3 years ago
Read 2 more answers
A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 2
Shalnov [3]

Answer:

The expected winnings for a person buying 1 ticket is -0.2.                  

Step-by-step explanation:

Given : A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 25 cents each, find the expected winnings for a person buying 1 ticket.

To find : What are the expected winnings?    

Solution :

There are one first prize, 2 second prize and 20 third prizes.

Probability of getting first prize is \frac{1}{20000}

Probability of getting second prize is \frac{2}{20000}

Probability of getting third prize is \frac{20}{20000}

A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each.

So, The value of prizes is

\frac{1}{20000}\times 1000+\frac{2}{20000}\times 300+\frac{20}{20000}\times 10

If 20000 tickets are sold at 25 cents each i.e. $0.25.

Remaining tickets = 20000-1-2-20=19977

Probability of getting remaining tickets is \frac{19977}{20000}

The expected value is

E=\frac{1}{20000}\times 1000+\frac{2}{20000}\times 300+\frac{20}{20000}\times 10-\frac{19977}{20000}\times 0.25

E=\frac{1000+600+200-4994.25}{20000}

E=\frac{-3194.25}{20000}

E=-0.159

Therefore, The expected winnings for a person buying 1 ticket is -0.2.

3 0
3 years ago
Other questions:
  • Which statement about polygon PQRST and its image after dilation, polygon P'Q'R'S'T', is correct?
    10·1 answer
  • Write a multiplication equation that has a solution of 8​
    10·2 answers
  • Two clinical trials were designed to test the effectiveness of laser treatment for acne. Seaton et al. (2003) randomly divided p
    13·1 answer
  • Please help me correct my answers!! im really confused
    13·1 answer
  • Mark u brainliest and give 30 points.No random answers and pls give answers with explanation/steps or i will report u.​​
    7·1 answer
  • What is the equation of the line that passes through the point (- 2, 0) and has a slope of ? 5/2 ?​
    11·1 answer
  • 1) What kind of mindset do you have when it comes to Math?
    10·1 answer
  • PLEASEEEEEEEEE HELPPPPPPPPP PLEASEEEEEE IM BEGGING SOMEONE PLEASEEEEE
    8·2 answers
  • A square park has an area of 120 m2
    5·1 answer
  • How do the y-values in the table grow? The y-values increase by a factor of 49 for each x increase of 1. The y-values increase b
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!