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3 years ago

Could anyone help me solve for x? I've tried multiple times and can't seem to get the answer that was given

Mathematics

1 answer:

saveliy_v [14]3 years ago

4 0

Step-by-step explanation:

Try Photo-math app or Math-way app.

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Plz someone help ASAP!

lozanna [386]

(1) C = 15x + 40000 ...............because it cost $15 to produce each CD with a one-time cost of $40,000

(2) R = 59x ......................because each CD will sell for $59

(3) P = R - C → P = 59x - (15x + 40000) → P = 44x - 40000

(4) 44x = 40000 → x = 909 ........ They must sell 909 in order to break even

6 0

3 years ago

6. Find the additive inverse of -7 + 51.<br> -7 - 51<br> 7 + 5<br> 7 - 51<br> -7 + 51

masya89 [10]

Answer:

7 - 51

Step-by-step explanation:

additive inverse : a number that when added to a given number gives zero the additive inverse of 4 is −4

5 0

3 years ago

Two consecutive odd integers whose sum is 196

Scrat [10]

X
x+2

x + x + 2 = 196
2x = 194
x=97

The two consecutive odd integers are 97 and 99.

8 0

3 years ago

Hailey received some cash for birthday. She spent $14.48 on a CD and donated $25.00 to charity. She put half of what was left in

DaniilM [7]

Work backwards.

After she put half of what she had left in, she had 17.76.

Multiply by 2:

17.76 * 2 = 35.52

Add 25:

35.52 + 25 = 60.52

Add 14.48:

75

So she received $75 on her birthday.

8 0

3 years ago

Read 2 more answers

Find, correct to four decimal places, the length of the curve of intersection of the cylinder 16x2 + y2 = 16 and the plane x + y

lubasha [3.4K]

First find a parameterization for the curve of intersection.

Given the equation of a cylinder, a natural choice for a parameterization would be one utilizing cylindrical coordinates. Here,

$16x^2+y^2=16\implies x^2+\left(\dfrac y4\right)^2=1$

which suggests we could use

$\begin{cases}x(t)=\cos t\\y(t)=4\sin t\\z(t)\end{cases}$

with $0\le t\le2\pi$ , and we get $z(t)$ from the equation of the plane,

$x+y+z=12\implies z(t)=12-x(t)-y(t)=12-\cos t-4\sin t$

Now use the arc length formula:

$\displaystyle\ell=\int_0^{2\pi}\sqrt{\left(\dfrac{\mathrm dx}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dy}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dz}{\mathrm dt}\right)^2}\,\mathrm dt$

$\displaystyle\ell=\int_0^{2\pi}\sqrt{\sin^2t+16\cos^2t+(\sin t-4\cos t)^2}\,\mathrm dt$

$\displaystyle\ell=\sqrt2\int_0^{2\pi}\sqrt{\sin^2t-4\cos t\sin t+16\cos^2t}\,\mathrm dt\approx\boxed{24.0878}$

4 0

4 years ago