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3 years ago

14

What is absolute value???

2 answers:

Elena L [17]3 years ago

6 0

<span>To remove any negative sign in front of a number, and to think of all numbers as positive (or zero). Example: |5|=5</span>

Ierofanga [76]3 years ago

6 0

Basically I think it of as how far away is this number from 0. So lets say I have a -6 and a positive 6, if they had a Absolute value around them each answer would be 6 due to them both being 6 units away from 0. Its best if you can picture this as a number line.
Hope this helps :D

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You earn 15n15n dollars for mowing nn lawns. how much do you earn for mowing one lawn? seven lawns?

kvasek [131]

You earn $15.00 for mowing one lawn.
15*7=105
You earn $105.00 for mowing 7 lawns.

6 0

3 years ago

Suppose that surface σ is parameterized by r(u,v)=⟨ucos(3v),usin(3v),v⟩, 0≤u≤7 and 0≤v≤2π3 and f(x,y,z)=x2+y2+z2. Set up the sur

Bad White [126]

Looks like you have most of the details already, but you're missing one crucial piece.

$\sigma$ is parameterized by

$\vec r(u,v)=\langle u\cos3v,u\sin3v,v\rangle$

for $0\le u\le7$ and $0\le v\le\frac{2\pi}3$ , and a normal vector to this surface is

$\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}=\left\langle\sin3v,-\cos3v,3u\right\rangle$

with norm

$\left\|\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}\right\|=\sqrt{\sin^23v+(-\cos3v)^2+(3u)^2}=\sqrt{9u^2+1}$

So the integral of $f(x,y,z)=x^2+y^2+z^2$ is

$\displaystyle\iint_\sigma f(x,y,z)\,\mathrm dA=\boxed{\int_0^{2\pi/3}\int_0^7(u^2+v^2)\sqrt{9u^2+1}\,\mathrm du\,\mathrm dv}$

6 0

2 years ago

Emma has addressed seven invitations to her

Firlakuza [10]

Answer:

12

Step-by-step explanation:

This can be solved by working backwards.

7 is one more than half the number of invitations.

Subtract 1. 6 is half the number of invitations.

Double.

12 is the full number of invitations.

Algebra (if you must!):

x = number of invitations

x/2 + 1 = 7

Subtract 1.

x/2 = 6

Multiply by 2.

x = 12

8 0

2 years ago

Read 2 more answers

The question is in the picture.

bogdanovich [222]

Just download photomath bro, does everything for you.

3 0

3 years ago

What is the mode of 5,67,8,9,10

Eduardwww [97]

The score set above has no mode
This is because mode is a measure of what score occurs the most
In this score set no numbers occur more than once

8 0

3 years ago