Use summation notation to write the series2+4+6+8+... For 10 terms

Answers

Answer 1

Answer: that would be:
[tx]
$\sum_{n=1}^{10} 2*n$
[/tex]

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If the complex number x = 3 + bi and |x|^2 = 13, which is a possible value of b?

Answers

so, if z = x+iy,
|z| = $\sqrt{x^2+y^2}$
and $ |z|^2 = x^2 + y^2 $

so if x = 3+bi
|x|^2 = 3^2 + b^2
which is given to be 13

3^2 + b^2 = 13
9+b^2 = 13
b^2 = 13-9
b^2 = 4
b = +\sqrt 4 , -sqrt 4
b = +2,-2

Hence, the possible values of b are +2 or -2.

Answer:

The answer is A in edge. The answer is 2.

Step-by-step explanation:

16 raised to the second power + X raised to the second power = 30 raised to the second power. QUESTION: What does X equal?

Answers

$16^2+x^2=30^2\n x^2=900-256\n x^2=644\n x=√(644) \vee x=-√(644)\n x=2√(161) \vee x=-2√(161)$

20,612,439 scientific notation

Answers

The scientific notation of the population is $2.0*10^(7)$ .

It is required to find the solution.

What is Scientific notation?

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. Scientific Notation is the expression of a number n in the form a∗10b. where a is an integer such that 1≤|a|<10. and b is an integer too.

Given :

The given number is

20,612,439

in scientific notation is

$2.0*10^(7)$

Move the decimal point so that there is seven non-zero digit to the left.

Hence, the scientific notation of the population is $2.0*10^(7)$ .

Learn more about scientific notation here:

brainly.com/question/18073768

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Answer:

2.0612439 x 10 to the 7th power

Step-by-step explanation:

Identify properties used in each step in rewriting the polynomial expression (x+5)+3(a+(6x)y)

Answers

(x + 5) + 3(a + (6x)y)
Adding Parenthesis: (x + 5) + 3(a + 6xy)
Distributive Property: (x + 5) + 3(a) + 3(6xy)
(x + 5) + 3a + 18xy
Adding Expressions: x + 5 + 3a + 18xy
3a + x + 18xy + 5

Please please help!!Volcanoes prove that the Earth's center is hot. The formula T= 10d +20 is used to estimate the temperature, T degrees Celcius, at a depth of d kilometres (km).
A) what does each term on the right side of the equation represent?
B) Estimate the depth where the temperature is 60 degrees C.
C) What is the approximate temperture at a depth of 4km?