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
denpristay [2]
3 years ago
13

Elaine has a piece of wire that is 2.16 m long. John has a piece of wire that is 2.061 m long. Who is piece of wire is longer? H

ow can you tell?
Mathematics
1 answer:
lesya [120]3 years ago
4 0
Elaine's would be because.16 is closer to being a whole than .016
You might be interested in
The area of circle b is 36 times greater than the area of circle
Zinaida [17]
I would say D I hope this helps
5 0
3 years ago
Hi guys, Can anyone help me with this tripple integral? Thank you:)
OleMash [197]

I don't usually do calculus on Brainly and I'm pretty rusty but this looked interesting.

We have to turn K into the limits of integration on our integrals.

Clearly 0 is the lower limit for all three of x, y and z.

Now we have to incorporate

x+y+z ≤ 1

Let's do the outer integral over x.  It can go the full range from 0 to 1 without violating the constraint.  So the upper limit on the outer integral is 1.

Next integral is over y.  y ≤ 1-x-z.   We haven't worried about z yet; we have to conservatively consider it zero here for the full range of y.  So the upper limit on the middle integration is 1-x, the maximum possible value of y given x.

Similarly the inner integral goes from z=0 to z=1-x-y

We've transformed our integral into the more tractable

\displaystyle \int_0^1 \int_0^{1-x} \int _0^{1-x-y} (x^2-z^2)dz \; dy \; dx

For the inner integral we get to treat x like a constant.

\displaystyle \int _0^{1-x-y} (x^2-z^2)dz = (x^2z - z^3/3)\bigg|_{z=0}^{z= 1-x-y}=x^2(1-x-y) - (1-x-y)^3/3

Let's expand that as a polynomial in y for the next integration,

= y^3/3 +(x-1) y^2 + (2x+1)y -(2x^3+1)/3

The middle integration is

\displaystyle \int_0^{1-x} ( y^3/3 +(x-1) y^2 + (2x+1)y -(2x^3+1)/3)dy

= y^4/12 + (x-1)y^3/3+ (2x+1)y^2/2- (2x^3+1)y/3 \bigg|_{y=0}^{y=1-x}

= (1-x)^4/12 + (x-1)(1-x)^3/3+ (2x+1)(1-x)^2/2- (2x^3+1)(1-x)/3

Expanding, that's

=\frac{1}{12}(5 x^4 + 16 x^3 - 36 x^2 + 16 x - 1)

so our outer integral is

\displaystyle \int_0^1 \frac{1}{12}(5 x^4 + 16 x^3 - 36 x^2 + 16 x - 1) dx

That one's easy enough that we can skip some steps; we'll integrate and plug in x=1 at the same time for our answer (the x=0 part doesn't contribute).

= (5/5 + 16/4 - 36/3 + 16/2 - 1)/12

=0

That's a surprise. You might want to check it.

Answer: 0

6 0
3 years ago
Which of the following are parts of the central nervous system? Check all that apply. * 5 points
tamaranim1 [39]

Answer:

Brain and peripheral nerves

Step-by-step explanation: Idk i just guess

5 0
3 years ago
What's the value of x?
Nutka1998 [239]
It is a definitely your welcome
8 0
2 years ago
The ratio of pineapple juice to sparkling water that Sylvia and her
Zarrin [17]

Answer:

Step-by-step explanation:

Pineapple:Sparkling water

               3:2

A: It's proportional as for every 3 pineapple juice require 2 water no matter how big or small, the ratio stays the same.

B: 3 times as much punch, basically multiply by 3

3(3):2(3)

9:6 pineapple:water

2 (water) = 4 quarts  1=2 quarts

9(2)=18

B: 18 quarts

 

7 0
2 years ago
Read 2 more answers
Other questions:
  • Solve for m: 18d + 2m + 9k < 5k + 10.
    9·1 answer
  • Sam has 2 2/3 cups of dry cat food that he will divide equally among 3 cats
    8·2 answers
  • △XLW≅△XGD.<br><br> What is length of GD¯¯¯¯¯¯ ?
    14·2 answers
  • 1. If one zero of the quadratic polynomial kx² + 3x + k is 2 then the value of k is *
    14·1 answer
  • Alex swims at an average speed of 45 m/min. How far does he<br> swim in 1 min 24 sec?<br> m
    14·2 answers
  • Change this number from standard notation to scientific notation. 22.98504
    7·1 answer
  • Will mark correct answer Brainliest
    12·1 answer
  • Solve the inequality for V .<br> 5V - 2 ≥ 13<br> Simplify your answer as much as possible.
    11·2 answers
  • Write an algebraic expression for the<br>phrase below.<br>12 less than twice a number n<br>​
    12·2 answers
  • Group 1
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!