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4 years ago

(Picture Included) 20 points - can someone solve 11, 12, 13, and 15?

Mathematics

1 answer:

slavikrds [6]4 years ago

6 0

11. 3(5) + 2(4)

15 + 8 = 13

12. x= -12

13. -30

15. x = 44

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Elise babysat her cousins during her parents' holiday party. The table shows the total earned for each cousin she babysat.

Jet001 [13]

Answer:

C. $49

Step-by-step explanation:

It is going up by $7 each cousin

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3 years ago

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What is 16 ÷ 2 x 5 x 3 ÷ 6

aliya0001 [1]

Answer:

Step-by-step explanation:

use PEMDAS.

do 5 x 3, the multiply that by 16/2.

you would get 120.

then divide by 6

4 0

3 years ago

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Please help me 50 points.

kolezko [41]

First we have to convert 60 feet to inches. since there are 12 inches in a foot we will multiply by 12
60×12=720
since the real thing is 720 inches and the scale drawing is 15 inches we can make a ratio
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48:1
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4 years ago

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) 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

10 POINTS<br><br> Seventeen is 20% of what number?<br><br> Enter your answer in the box.

Scrat [10]

85

Also, this is 5 points.

4 0

4 years ago