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RSB [31]
3 years ago
9

If you add the digits in a two-digit number and multiply the sum by 7, the you get the original number. If you reverse the digit

s in the two digit number, the new number is 18 more than he sum if it’s two digit. What is the original number?
42
24
64
46
36
Mathematics
1 answer:
Serga [27]3 years ago
7 0
Hello!

Since when you multiply the number by 7 you get the original number the number is a multiple of 7

The only number that is a multiple of 7 is 42

The answer is 42

Hope this helps!
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jenyasd209 [6]

Assumption:

<em>Something is missing in question. If we see deeply it is apparent that there is some issue with option b i.e. </em><em>B) 8 − 4x 10 = 4 + 2x </em><em>we assume that the questioner want to type </em><em>B) 8-4x^10 = 4 + 2x.</em>

Answer:

The correct answer is <em> </em><em>B) 8-4x^10 = 4 + 2x.</em>

Step-by-step explanation:

All equations given is the question can be solve easily to determine the value of x. However if we solve equation mentioned in option b we cannot  get single answer easily.

For example value of x in eq given in option A

15x + 123 = 5x+4

1oX = -119

 X = -119/10

5 0
3 years ago
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PLEASE HELP ME!!! Which inequality best represents that ice cream at -5 degrees celsius is cooler than 4 degrees celsius? A. -4
otez555 [7]

Answer:

i think but I am not sure so maybe ask somebody else but I think it is A.

Step-by-step explanation:

I just think it is

8 0
3 years ago
How does adding the log together automatically mean that it is a factorial?
andreyandreev [35.5K]

Answer: The answer is given below.

Step-by-step explanation:  We are given an equality involving logarithm and we are to show the implication of L.H.S. to R.H.S.

We will be using the following two properties of logarithm:

(i)~\log_ba=\dfrac{1}{\log_ab},\\\\\\(ii)~log_ab+\log_ac=\log_a(bc).

The proof is as follows:

L.H.S.\\\\\\=\dfrac{1}{\log_2N}+\dfrac{1}{\log_3N}+\dfrac{1}{\log_4N}+\cdots+\dfrac{1}{\log_{100}N}\\\\\\=\log_N2+\logN3+\log_N4+\cdots+\log_N100\\\\=\log_N\{2.3.4...100\}\\\\=\log_N\{1.2.3.4...100\}\\\\=\log_N{100!}\\\\=\dfrac{1}{\log_{100!}N}\\\\=R.H.S.

Hence proved.

6 0
2 years ago
Do not multiply by pi. Just use the whole number and do not try to include pi in the
IrinaK [193]

Answer:

Surface area = 1808.64in² and volume is 7234.56in³

Step-by-step explanation:

The figure above is a sphere, and it has a diameter of 24in

Radius = ?

Radius = diameter / 2

R = 24 / 2

R = 12in

Surface area of of sphere = 4πr²

Volume of a sphere = 4/3 πr³

π = 3.14

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Surface area = 4 * 3.14 * 144

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2. Volume of the sphere = 4/3πr³

Volume = 4/3 * 3.14 * 12³

Volume = 4/3 * 3.14 * 1728

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The surface area of the sphere is 1808.64in² and the volume is 7234

56in³

4 0
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SVETLANKA909090 [29]

Answer:

The answer is A, 50°.

Here, angle CAB= 60°.

In triangle ABC,

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angle ABC= 50°.

3 0
3 years ago
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