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2 years ago

Giving brainliest to first correct answer

Mathematics

1 answer:

just olya [345]2 years ago

8 0

The answer would be B

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If a school policy maker wanted to learn what expectations must be met to receive funding from H.R.5, what titles would that per

lukranit [14]

I'm definite about a b c

7 0

4 years ago

Let y in the form of a + ib, where a and b are real numbers, be the cubic roots of a complex number z 20, where z =2 4+i3. Find

GalinKa [24]

The possible values of a + b are 0.89, 3.01 and -3.9

<h3>How to determine the value of a + b?</h3>

The given parameters are:

y = a + ib

z = 24 + i3

Where:

y = ∛z

Take the cube of both sides

y³ = z

Substitute the values for y and z

(a + ib)³ = 24 + i3

Expand

a³ + 3a²(ib) + 3a(ib)² + (ib)³ = 24 + i3

Further, expand

a³ + i3a²b + i²3ab² + i³b³ = 24 + i3

In complex numbers;

i² = -1 and i³= -i

So, we have:

a³ + i3a²b + (-1)3ab² -ib³ = 24 + i3

Further expand

a³ + i3a²b - 3ab² - ib³ = 24 + i3

By comparing both sides of the equation, we have:

a³ - 3ab² = 24

i3a²b - ib³ = i3

Divide through by i

3a²b - b³ = 3

So, we have:

a³ - 3ab² = 24

3a²b - b³ = 3

Using a graphing tool, we have:

(a,b) = (-1.55, 2.44), (2.89,0.12) and (-1.34,-2.56)

Add these values

a + b = 0.89, 3.01 and -3.9

Hence, the possible values of a + b are 0.89, 3.01 and -3.9

Read more about complex numbers at:

brainly.com/question/10662770

#SPJ1

6 0

2 years ago

Evaluate f(-3) for f(x) = 2x.

Natasha_Volkova [10]

Answer: f(-3) = 2 x -3 = -6

3 0

3 years ago

Which second degree polynomial function has a leading coefficient of –1 and root 4 with multiplicity 2?

Fynjy0 [20]

Answer:

- $(x-4)^{2}$

or - $x^{2}$ +8x-16

Step-by-step explanation:

Given a second degree polynomial has a root 4 with multiplicity 2

That means, 4 is a repeating root of the polynomial.

Any second degree polynomial has at most 2 real roots.

⇒Both roots of the polynomial are 4.

and its expression can be written as c· $(x-4)^{2}$ where c is a real number

⇒c·( $x^{2}$ -8x+16)

⇒c $x^{2}$ -8cx+16c

Also, the leading coefficient is given as -1

So, c = -1

and the expression becomes (-1) $x^{2}$ -8·(-1)·x+16·(-1)

⇒<u>- $x^{2}$ +8x-16</u>

7 0

3 years ago

Which of the following statements accurately describes the result of an increasing worker-per-beneficiary ratio in the Social Se

Nat2105 [25]

B is the answer fs no doubt

4 0

3 years ago