3 years ago

what is the difference between the surface areas of the Pyramid of Khafre and the Pyramid of Menkaure?

Mathematics

1 answer:

Svet_ta [14]3 years ago

4 0

What do you think it is????

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use the fact that 10^3 = 2^10 to mentally find a vaule of n for which 2^n > 10^50 & 10^n > 2^300

Rudiy27

$2^n>10^{50}=10^{3\cdot16+2}=10^2(10^3)^{16}=10^2(2^{10})^{16}=5^22^{162}$
$2^{n-162}>25$

The least power of 2 that exceeds 25 is $2^5=32$ , so we have

$2^{n-162}=2^N>25\implies N=5\implies n-162=5\implies n=167$

- - -

$10^n>2^{300}=(2^{10})^{30}=(10^3)^{30}=10^{90}$

The least integer $n$ that satisfies this inequality would clearly be $n=91$ .

6 0

3 years ago

4/3 of 21, 2/3 of 21

nikdorinn [45]

of means multiply

4/3 x 21/1

= 84/3

= 28

2/3 x 21/1

=42/3

= 14

3 0

4 years ago

A person is to install five devices each 6 7/8 inches wide with 3 1/2 inches between switches. how much space will be needed to

solong [7]

Refer to the diagram shown below.

w = 6 7/8 in = 6.875 in, the width of each device.
d = 3 1/2 in = 3.50 in, the space between teo devices.

The total space needed is
D = 4(w+d) + w
= 5w + 4d
= 5*6875 + 4*3.5
D = 48.375 in or 48 3/8 in

Answer: 48 3/8 inches or 48.375 inches