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3 years ago

Factor the expression completely. 18X2-8

Mathematics

2 answers:

aleksklad [387]3 years ago

7 0

Answer should be: 2(3x-2)(3x+2)

Hope this helps <3

Tcecarenko [31]3 years ago

3 0

18x=2-8

18x=-6

x=-3

that would be my answer if not then ask someone else

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Earth's radius is approximately 6400 km. What is the surface area & volume of the earth?

Tamiku [17]

Answer:

$SA=514,457,600\ km^{2}$

$V=1,097,509,546,667\ km^{3}$

Step-by-step explanation:

step 1

Find the surface area

we know that

the surface area of a sphere is equal to

$SA=4\pi r^{2}$

substitute

$SA=4 \pi (6,400)^{2}$

$SA=163,840,000 \pi\ km^{2}$

substitute the approximate value of pi (3.14)

$SA=(3.14) (163,840,000)$

$SA=514,457,600\ km^{2}$

step 2

Find the volume

The volume is equal to

$V=(4/3)\pi r^{3}$

substitute

$V=(4/3)(3.14) (6,400)^{3}$

$V=1,097,509,546,667\ km^{3}$

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miv72 [106K]

Answer:

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Step-by-step explanation:

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Nesterboy [21]

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slamgirl [31]

Answer:

The Answer is that Orchestra seats were $15 and Balcony seats were $9.

Step-by-step explanation:

400(x+6) + 250x = 8250

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Proof:

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