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
DanielleElmas [232]
2 years ago
9

You need to form a 10-inch by 15-inch piece of tin into a box (with no top) by cutting a square from each corner and folding up

the sides. how much should you cut so the resulting box has the greatest volume?

Mathematics
1 answer:
Goshia [24]2 years ago
4 0
This sort of question is answered easily by a graphing calculator. The square cut from each corner should be 1.962 inches on each side.

_____
After creating a fold-up flap of x inches in width, the base of the box will be
  (10 - 2x) by (15 - 2x)
and the depth of the box will be the width of the fold-up flap: x.

Then the volume of the box is
  v = x(10 -2x)(15 -2x) = 150x -50x^2 +4x^3
The derivative of the volume will be zero at the maximum volume.
  0 = dv/dx = 150 -100x +12x^2
This has roots at
  x = (100 ±√(100² - 4(12)(150)))/(2·12)
  x = (100 ± √2800)/24 = (25 ± 5√7)/6
Only the smaller of these solutions gives a maximum volume.

You should cut (5/6)(5-√7) ≈ 1.962 inches to obtain the greatest volume.

You might be interested in
What’s the answer to the question down below
levacccp [35]

Any linear equation can be written as

y = mx+b

where m is the slope and b is the y intercept

m = 1/2 in this case. It represents the idea that the snow fell at a rate of 1/2 inch per hour. In other words, the snow level went up 1/2 an inch each time an hour passed by.

b = 8 is the y intercept. It's the starting amount of snow. We start off with 8 inches of snow already.

The info "snow fell for 9 hours" doesn't appear to be relevant here.

3 0
2 years ago
Anthony has been saving nickels dimes quarters over the last year he knows that he has twice as many nickels as quarters. change
OLga [1]

Answer:

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

Step-by-step explanation:

Let

x ----> the number of nickel's coin

y ---> the number of dime's coin

z ---> the number of quarter's coin

Remember that

1\ nickel=\$0.05

1\ dime=\$0.10

1\ quarter=\$0.25

we know that

x+y+z=260 ----> equation A

0.05x+0.10y+0.25z=29.75 ----> equation B

x=2z ----> equation C

substitute equation C in equation A and equation B

2z+y+z=260

3z+y=260 ---> equation A1

0.05(2z)+0.10y+0.25z=29.75

0.35z+0.10y=29.75 -----> equation B1

Solve the system of equations A1 and B1 by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (75,35)

see the attached figure

so

z=75, y=35

<em>Find the value of x</em>

x=2(75)=150

therefore

The number of nickel's coin is 150

The number of dime's coin is 35

The number of quarter's coin is 75

8 0
3 years ago
Jerod delivers pizzas part-time. Last year he drove 4071 miles. This year he drove 5103 miles. How many more miles did he drive
poizon [28]

Answer:

1032 miles

Step-by-step explanation:

We have : 5103 - 4071 = 1032(miles)

So he drove more 1032 miles this year than last year

6 0
2 years ago
Read 2 more answers
Given the equation 6/x=3/k+2, and the constraints x ≠ 0 and k ≠-2, what is x in terms of k?
Veronika [31]

Answer:

A) 2k+4

Step-by-step explanation:

To solve for terms of x, we need to. she sure that x is on its own side while every other term is on the other side.

To start, we will cross multiply. If we have a/b=c/d, then ad=bc

We can perform the same calculation here,

6/x=3/(k+2)

6(k+2)=3x

Divide both sides by 3

2(k+2)=x

x=2k+4

7 0
3 years ago
Idk the answer to this question please help me
erica [24]
2/3 x 42/3
hope this helps

7 0
3 years ago
Other questions:
  • Geoffrey wrote the following paragraph proof showing that rectangles are parallelograms with congruent diagonals.
    8·2 answers
  • Please help me with geometry!
    9·1 answer
  • Geometry help 10 points
    5·2 answers
  • Which statement show equivalent expressions? PLEASE HELP ME ASAP
    7·2 answers
  • Solve for j-<br>2.45j=2.05
    9·1 answer
  • 1 Ticket For $50
    13·2 answers
  • The original pair of shoes is $42 the sale price is 20% off the original price what is the amount off the original price
    10·1 answer
  • Use the Pythagorean Theorem to find the length of the leg in the triangle shown below. The figure shows a right triangle with on
    6·2 answers
  • Please help me and no links this is due in 10 mins ill give you the crown
    11·1 answer
  • Which two points are on the graph of W(d) = 5d – 30?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!