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2 years ago

15

The Sunday newspaper costs $2.10 issue delivered and the Saturday and weekday papers cost 40 cents per issue delivered how many

complete weeks can be purchased for $117.00

1 answer:

In-s [12.5K]2 years ago

6 0

26 weeks is what I got

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Solve: X^3 = 27 it's solve for X <br><br> I just need some help

Leokris [45]

Answer:

X = 3

Step-by-step explanation:

3^3 = 9, 9^3 = 27.

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2 years ago

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Find the value of x. <br> m27 = 2x + 18 and 2B

Reil [10]

<h2>45</h2><h2>___________________________________</h2>

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2 years ago

I need help please thank u sm

gavmur [86]

K= 8. If you look at the pattern each x value is multiplied by 8 to give you the y value. You could also solve it by:

40=k5
40/5=k
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you could do this with any of the x or y values and still end up with 8.

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3 years ago

Lauren has started a business baking cupcakes. It takes one minute to frost each batch. How many will it take her and 4 friends

Mamont248 [21]

Do 20 times 4 then u have your answer

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3 years ago

Evaluate the spherical coordinate integral

expeople1 [14]

Rewrite the equations of the given boundary lines:

<em>y</em> = -<em>x</em> + 1 ==> <em>x</em> + <em>y</em> = 1

<em>y</em> = -<em>x</em> + 4 ==> <em>x</em> + <em>y</em> = 4

<em>y</em> = 2<em>x</em> + 2 ==> -2<em>x</em> + <em>y</em> = 2

<em>y</em> = 2<em>x</em> + 5 ==> -2<em>x</em> + <em>y</em> = 5

This tells us the parallelogram in the <em>x</em>-<em>y</em> plane corresponds to the rectangle in the <em>u</em>-<em>v</em> plane with 1 ≤ <em>u</em> ≤ 4 and 2 ≤ <em>v</em> ≤ 5.

Compute the Jacobian determinant for this change of coordinates:

$J=\begin{bmatrix}\frac{\partial u}{\partial x}&\frac{\partial u}{\partial y}\\\frac{\partial v}{\partial x}&\frac{\partial v}{\partial y}\end{bmatrix}=\begin{bmatrix}1&1\\-2&1\end{bmatrix}\implies|\det J|=3$

Rewrite the integrand:

$-3x+4y=-3\cdot\dfrac{u-v}3+4\cdot\dfrac{2u+v}3=\dfrac{5u+7v}3$

The integral is then

$\displaystyle\iint_R(-3x+4y)\,\mathrm dx\,\mathrm dy=3\iint_{R'}\frac{5u+7v}3\,\mathrm du\,\mathrm dv=\int_2^5\int_1^45u+7v\,\mathrm du\,\mathrm dv=\boxed{333}$

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3 years ago