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4 years ago

In a school, į of the students study a language.

Mathematics

1 answer:

eduard4 years ago

8 0

Answer:

2:6

Step-by-step explanation:

do the 5.0 star thank and brainliest

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Calculate the double integral. $$\iint_{R}{\color{red}4} xye^{x^{2}y}\hspace*{3pt}dA, \quad R = [0, 1] \times [0, {\color{red}7}

Lady_Fox [76]

Answer:

$\mathbf{\int \int _R \ 4xy e^{x^2 \ y} \ dA = 2 (e^7 -8)}$

Step-by-step explanation:

Given that:

$\int \int _R 4xye^{x^2 \ y} \ dA, R = [0,1]\times [0,7]$

The rectangle R = [0,1] × [0,7]

R = { (x,y): x ∈ [0,1] and y ∈ [0,7] }

R = { (x,y): 0 ≤ x ≤ 1 and 0 ≤ x ≤ 7 }

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = \int^{7}_{0}\int^{1}_{0} 4xye^{x^2 \ y} \ dx dy$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = \int^{7}_{0} \begin {bmatrix} ye^{yx^2} \dfrac{4}{2y} \end {bmatrix}^1 _ 0 \ dy$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = \int^{7}_{0} \begin {bmatrix} ye^{y1^2} \dfrac{4}{2y} - ye^{y0^2} \dfrac{4}{2y} \end {bmatrix}\ dy$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = \int^{7}_{0} \dfrac{4}{2}(e^y -1) \ dy$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = \dfrac{4}{2}[e^y -1]^7_0 \ dy$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = 2 [(e^7 -7)-(e^0 -0)]$

$\int \int _R \ 4xy e^{x^2 \ y} \ dA = 2 [(e^7 -7)-1]$

$\mathbf{\int \int _R \ 4xy e^{x^2 \ y} \ dA = 2 (e^7 -8)}$

3 0

4 years ago

Determine whether the relation is a function. Explain.<br> (-1, 6), (1, 4), (-1, 2), (1, 6), (-1, 5)

postnew [5]

Answer:

The relation is not a function.

Step-by-step explanation:

The x-values of the relation are repetitive, making it not a function.

5 0

3 years ago

Read 2 more answers

Please, I need help I'm way behind.

gregori [183]

Answer:

$\frac{18√2}{√3}$

Step-by-step explanation:

The lengths of the sides of a 30-60-90 triangle are in the ratio 1:2:√3.
The lengths of the sides of a 45-45-90 triangle are in the ratio 1 : 1 : √2
We can get the length of the longest side of the bottom triangle is 9×2÷√3 = $\frac{18}{√3}$
And based on the theory shown on the 2nd step, we can get x (the length of the longest side of the upper triangle) is $\frac{18}{√3}$ x√2

3 0

4 years ago

Okay so can you please help me do this?!

Katyanochek1 [597]

Answer:

w = 312

The step by step process of rearranging the equation to find w is as follows:

w / -8 = -39

Multiplying both sides by –8:

w / -8 x -8 = -39 x -8

w = 312

6 0

3 years ago

In a triangle, the measure of the first angle is 24 degrees more than the measure of the second angle. The measure of the third

tigry1 [53]

Here goes the answer. Hope it helps.

7 0

3 years ago