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2 years ago

(3 − 4i)(5 + 2i) A. 15 − 8i B. 23 − 14i C. 15 − 8i2 D. 15 − 14i − 8i2

Mathematics

1 answer:

choli [55]2 years ago

8 0

Answer:

B.23-14i

Step-by-step explanation:

(3x5)+(3x2i)-(4ix5)-(4ix2i)

15+6i-20i-8(-1)

15+6i-20i+8

23-14iฟ

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I don't understand this question at all please help if you do

lorasvet [3.4K]

Answer:

Answer is $\frac{4}{3}$

Step-by-step explanation:

To find the interval of x. Use our equations to equal each other.

$-x^2+2x=y,y=0$

$-x^2+2x=0\\-x(x-2)=0\\-x=0 , (x-2)=0\\x=0 ,2$

$\int\limits^2_0 {-x^2+2x} \, dx$

Integrate.

$\frac{-x^3}{3}+x^2\\(\frac{-2^3}{3}+2^2)-[\frac{-0^3}{3}+0^2]\\-\frac{8}{3} +4-0\\-\frac{8}{3}+\frac{12}{3} =4/3$

Using Desmos I have Graphs of both of the equations you have provided. The problem asks us to find the shaded region between those curves/equations.

Proof Check your interval of x.

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1 year ago

What is the range of y=2 to the power of x

melisa1 [442]

The range is 0 to indifinity

6 0

3 years ago

8. Over a period of 3 hours, the outside temperature changed an average of -2.25 Fahrenheit per hour. Which statement correctly

ryzh [129]

Answer:

Step-by-step explanation:

-2.25*3 = 6.75 decreased (since negative)

4 0

2 years ago

Which polynomial is factored completely

Ket [755]

Answer: The correct option is c.

Explanation:

Reason for correct option:

$3x(9x^2+1)$

This expression cannot be factored further because $(9x^2+1)$ is the complete factor. Therefore the option c is correct.

Reason for incorrect option:

$5x^2-17x+14=5x^2-10x-7x+14=5x(x-2)-7(x-2)=(x-2)(5x-7)$

Since the given expression can be factored further therefore the option d is incorrect.

$4(4x^4-1)=4((2x)^2-1)=4(2x^2-1)(2x^2+1)$

Since the given expression can be factored further. Therefore the option a is incorrect.

$2x(y^3-4y^2+5y)=2xy(y^2-4y+5)$

Since the given expression can be factored further. Therefore the option b is incorrect.

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3 years ago

Read 2 more answers

Net worth is equal to assets minus liabilities. True or false?

user100 [1]

Answer:

True

Step-by-step explanation:

We can always determine the net worth of a company (also known as the shareholders equity) by determining how much the company has in assets and how much it owes.

7 0

2 years ago