Please do me explanation!

Mathematics

2 answers:

Semmy [17]3 years ago

7 0

Answer:

x = -13

Step-by-step explanation:

9−2x=35

2x=9−35

2x=−26

x=−262

x=−13

Zina [86]3 years ago

3 0

Answer:

X=-22

Step-by-step explanation:

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mihalych1998 [28]

Answer:

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Step-by-step explanation:

8 0

3 years ago

Solve the equation E = IR for I

alexgriva [62]

Answer:

$I=\frac{E}{R}; R\neq 0$

Step-by-step explanation:

$E=IR\\\\IR=E\\\\\frac{IR=E}{R}\\\\ \boxed{I=\frac{E}{R}; R\neq 0}$

Hope this helps.

3 0

3 years ago

Find the average value of f(x, y = over the region, r, the triangle with vertices (0, 0, (0, 1 and (1, 1.

makkiz [27]

Can't be done without knowing what $f$ is...

But I can tell you that the average value of $f$ is given by

$\dfrac{\displaystyle\iint_Rf(x,y)\,\mathrm dx\,\mathrm dy}{\displaystyle\iint_R\mathrm dx\,\mathrm dy}$

At the very least, we can compute the denominator, which is just the area of $R$ . You have

$\displaystyle\iint_R\mathrm dx\,\mathrm dy=\int_{x=0}^{x=1}\int_{y=x}^{y=1}\mathrm dy\,\mathrm dx=\int_0^1(1-x)\,\mathrm dx=\dfrac12$

so the average value will be

$2\displaystyle\iint_Rf(x,y)\,\mathrm dx\,\mathrm dy$