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3 years ago

There is only one positive integer which is exactly twice the sum of its digits. find this 2 digit number

Mathematics

1 answer:

ad-work [718]3 years ago

8 0

There is only one positive integer which is exactly twice the sum of its digits. find this 2 digit number

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The two different types of cells are please tell me the answer

vodomira [7]

Answer:

eukaryotic cells (cells that have a nucleus) and prokaryotic cells (cells that do not have a nucleus)

Step-by-step explanation:

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3 years ago

Find the zeroes of the following equation:

weqwewe [10]

Answer: $\bold{x=\dfrac{1\pm \sqrt5}{2}}$

both zeros are irrational numbers

Step-by-step explanation:

Note: The question would have made more sense if if it was 2/x = x - 1 but I will answer it as written.

$\dfrac{1}{x}=x-1\qquad \text{Restriction: }x\neq 0\\\\\\\text{Cross multiply, simplify, and set equal to zero:}\\1=x(x-1)\\\\1=x^2-x\\\\0=x^2-x-1\\\\\\\text{This is not factorable so you will need to use Quadratic Formula:}\\\\x=\dfrac{-(-1)\pm \sqrt{(-1)^2-4(1)(-1)}}{2(1)}\\\\\\x=\dfrac{1\pm \sqrt5}{2}$

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2 years ago

50 POINTS!URGENTTTTT create a systems of equations that has infinite solutions

Citrus2011 [14]

Answer:

x-10 +x = 8 + 2x - 18

Step-by-step explanation:

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3 years ago

Use the function below to find F(3). F(x) = 4(1/3)^x

aalyn [17]

Answer:

4/27

Step-by-step explanation:

F(x) = 4(1/3)^x

Let x =3

F(3) = 4(1/3)^3

Exponents first

F(3) = 4 * 1/27

Then multiply

f(3) = 4/27

6 0

2 years ago

Read 2 more answers

You are studying for your final exam on the semester. Up to this point, you received 3 exam scores of 99%, 80%, And 70%. To rece

Alchen [17]

80*4=320
89*4=356
This is the range of the addition of all 4 scores.

99+80+70=249

320-249= 71
356-249= 107

[71, 100] would be the answer, unless you can get extra credit on the final.

5 0

3 years ago

Read 2 more answers