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Nesterboy [21]
4 years ago
9

Please help, answer given as X =

Mathematics
2 answers:
Kipish [7]4 years ago
8 0
-2 is the answer for this question
Damm [24]4 years ago
4 0

Answer:

-2

Step-by-step explanation:

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Paulina gets on an elevator. At the first stop, 4 people get off and 3 get on. At the second stop, 5 people get off and one gets
Hoochie [10]

Answer:

look down + pls give me brainiest

Step-by-step explanation:

Let x = number of people when she got on.

x -4+3 -5+1 -1 = 4

x -6 = 4

Solve for x to get x=10.

So there were 10 people when Paulina got on (including herself).

5 0
4 years ago
) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle
Fynjy0 [20]

The surface (call it S) is a triangle with vertices at the points

x=0,y=0\implies z=2\implies(0,0,2)

x=0,y=2\implies z=-2\implies(0,2,-2)

x=2,y=0\implies z=-8\implies(2,0,-8)

Parameterize S by

\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)

with 0\le u\le1 and 0\le v\le1. Take the normal vector to S to be

\vec s_v\times\vec s_u=(20v,8v,4v)

Then the flux of \vec F across S is

\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv

=\displaystyle\int_0^1\int_0^1(6-6v,2v-2uv,-8+6v+4uv)\cdot(20v,8v,4v)\,\mathrm du\,\mathrm dv

=\displaystyle8\int_0^1\int_0^1(11v-10v^2)\,\mathrm du\,\mathrm dv=\boxed{\frac{52}3}

8 0
4 years ago
Which number rounds to 260 when rounded to the nearest 10?
mylen [45]
I looked it up and  got this........

What is 260 rounded to the nearest ten?
Here we will tell you what 260 is rounded to the nearest ten and also show you what rules we used to get to the answer. First, 260 rounded to the nearest ten is:
260
Remember, we did not necessarily round up or down, but to the ten that is nearest to 260.
When rounding to the nearest ten, like we did with 260 above, we use the following rules:
A) We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.
B) We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.
C) If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

3 0
3 years ago
What is the angle of C?​
melomori [17]

Answer:

32.5

Step-by-step explanation:

All you had to do was measure them see what was the half of each

5 0
3 years ago
3. C(-2, -6) - с'(х + 10, y + 4)
Reptile [31]

i dont know it :p

im in only 6th bgradee

4 0
3 years ago
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