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andreyandreev [35.5K]
3 years ago
10

Which of the following best describes the set of all numbers of the form a+bi where a and b are any real numbers and i equals sq

uare root of -1?
A. Rational Exponents

B. complex numbers

C. complex fractions

D. Rational Exponents
Mathematics
1 answer:
Andrei [34K]3 years ago
6 0
<h3>Answer: B) Complex numbers</h3>

Complex numbers are always in the form a+bi with 'a' and 'b' as real numbers.

If b = 0 and 'a' is nonzero, then a+bi = a+0i = a which is strictly a real number

If a = 0 and b is nonzero, then a+bi = 0+bi = bi indicating that the number is now purely imaginary

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I got an answer but im really not sure if its right so please help
Vladimir79 [104]

Answer:

60 degrees.

Step-by-step explanation:

Since you know that y = 74 because they are vertical angles, and 46 = the angle across from it (there is a theorem for it). Since one line is 180 degrees, and you already know the two sides next to x, which is 74 and 46, you can do 180 - 74 - 46. Your final answer should be 60 degrees.

5 0
3 years ago
Read 2 more answers
The minimum value of f(x) = x3 – 3x2 – 9x + 2 on the interval [–4, 0] is
garri49 [273]

Answer:

-74

Step-by-step explanation:

Graph the function. See attached picture. Between the interval where -4 > x < 0, the graph rises up to a peak and descends back down when x = 0. This means the minimum value will be where x = -4.

Substitute x = -4 into the equation.

f(-4) = (-4)^3 -3(-4)^2 - 9(-4) + 2

f(-4) = -64 -3(16) +36 + 2

f(-4) = -64 - 48 + 36 + 2

f(-4) = -74

5 0
3 years ago
Which of the graphs below would result if you made the leading term of the
solong [7]

Answer:

A

Step-by-step explanation:

It goes up and down due to the x^3 then the 3x^2

4 0
3 years ago
To go to the theater you would pay $8.00 for each ticket you purchase. Which answer choice correctly represents the algebraic ex
Simora [160]

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A.

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4 0
3 years ago
Solve each system by substitution.<br> y = 2x + 5<br> 3x - y= -6
castortr0y [4]
X=-1 and y=3

To solve this, because y is equal to 2x+5, you can substitute 2x+5 into the bottom equation for y.

You now have 3x - (2x + 5) =-6

This can be solved like a normal equation. Multiply each term in the parenthesis by -1.

3x - 2x - 5 = -6

Subtract 2x from 3x

x - 5 = -6

Add 5 to both sides

x=-1

Now you can solve for y by plugging -1 in for x in either equation. Im going to use the top one.

y= 2(-1)+5
y= -2+5
y=3

You can check your answer by plugging in the values for x and y into both equations and making sure both sides equal each other.
7 0
3 years ago
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