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2 years ago

Will someone please help me

Mathematics

1 answer:

GaryK [48]2 years ago

7 0

$43.60 - $2.40 = $41.20 (4 CDs before tax)

Each CD before tax = $41.20 / 4 = $10.30

Answer

$10.30

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Please help! High school math

Yanka [14]

Answer:sorry people are steling my points by answering my questions with links. :(

Step-by-step explanation:

8 0

2 years ago

Evaluate the integral Find the volume of material remaining in a hemisphere of radius 2 after a cylindrical hole ofradius 1 is d

algol13

You want to find the volume inside the hemisphere $x^2+y^2+z^2=4$ (i.e. inside the sphere but above the plane $z=0$ ) and outside the cylinder $x^2+y^2=1$ . Call this region $R$ .

In cylindrical coordinates, we have

$\displaystyle\iiint_R\mathrm dV=\int_0^{2\pi}\int_1^2\int_0^{\sqrt{4-r^2}}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta$

$\displaystyle=2\pi\int_1^2 r\sqrt{4-r^2}\,\mathrm dr$

$\displaystyle=-\pi\int_3^0\sqrt u\,\mathrm du$

(where $u=4-r^2$ )

$\displaystyle=\pi\int_0^3\sqrt u\,\mathrm du$

$=\dfrac{2\pi}3u^{3/2}\bigg|_0^3=2\sqrt3\,\pi$

7 0

3 years ago

What is the decimal equivalent of each rational number a.7/20 b.-23/20 c.1/18 d.-60/22

Eva8 [605]

Answer:

a. 0.35

b. -1.15

c. 0.056

d. -2.727

4 0

1 year ago

What power do I need to raise both sides of the following equation to? x^4=81

LenKa [72]

Answer:

Rise it to 2

( x ^2 ) ^2 − 9 ^2 = 0

Step-by-step explanation:

3 0

2 years ago

4 to the power of 55

LenaWriter [7]

$\\ \sf\longmapsto 4^{55}$

$\\ \sf\longmapsto (4^5)^{11}$

$\\ \sf\longmapsto 1024^{11}$

$\\ \sf\longmapsto 1024^31024^41024^3$

$\\ \sf\longmapsto 1,073,741,824\times 1,073,741,824\times 1,099,511,627,776$

$\\ \sf\longmapsto 1.29807421E+33$

6 0

2 years ago