(2-3i)*(3+4i) perform following operations

Answers

Answer 1

Answer: $\left( 2-3i \right) \left( 3+4i \right) \n \n =6+8i-9i-12{ i }^( 2 )\n \n =6-i-12\left( -1 \right) \n \n =6-i+12\n \n =18-i$

Answer 2

Answer: $(2-3i)(3+4i)=\n6+8i-9i+12=\n18-i$

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A ball is dropped form a height of 100 inches. The ball bounces, each time reaching a lower and lower height. The height of each bounce is 75% of the previous bounce. What height will the ball reach after bouncing four times? How many bounces does it take for the ball to reach a height of less than one inch?

Which of the following is not the same set of numbers?natural numbers
whole numbers
counting numbers

Answers

it is natural numbers

Max worked 6.23 hours on Monday, 7.45 hours on Tuesday, 8.3 hours on Wednesday, 8 hours on Thursday, and 5.21 hours on Friday. What is the total number of hours that Max worked?

Answers

this is just simple addition

total = 6.23+7.45+8.3+8+5.21 = 35.19 hours

This problem is only asking for the total number of hours he worked. So to begin, as this is an addition problem, you would take the numbers and put them in a sequence like the one below:

6.23 + 7.45 + 8.3 + 8 + 5.21

Then you would add the numbers together, remembering the decimals out of 100, and the total sum would be your answer. Answer: 35.19 hours in total. Hope this helped you :)!

I need help on this please help

Answers

Answer:

Step-by-step explanation:

It is a right angle triangle. Hypotenuse is 10, because it was 15 ft tall. 10 squared is 100. 5 squared is 25. 100 - 25 = 75. Sqrt 75 = 9

Answer -10ft
15-5=10
X=10ft

4 times what equals 5616

Answers

When you know the answer and one of the factors in a multiplication problem, you can use division to find the third number.

So, in your question you know that 4 times a number equals 5616.
To find this number, we can just divide 5616 by 4.

5616 / 4 = 1404

Therefore, 4 times 1404 equals 5616.
Hope this helps! :)

just divide 4÷5616 the long way and the answer would be 1404.

Need help how do I Solve a=2x+6xz for x.

Answers

Answer:

x=4

Step-by-step explanation:

f sine of x equals square root of 2 over 2, what is cos(x) and tan(x)? Explain your steps in complete sentences.

Answers

Sin(x) = opposite over hypotenuse
Cos(x) = adjacent over hypotenuse
Tan(x) = opposite over adjacent

Everything revolves around a right triangle.
From the given equation, "sine of x equals square root of 2 over 2"

Opposite = square root of 2
Hypotenuse = 2
Adjacent = ?

Using the Pythagorean Equation: H^2 = O^2 + A^2
2^2 = (square root of 2)^2 + A^2
A^2 = 4 - 2
A = square root of 2

Cos(x) = square root of 2 over 2
Tan(x) = square root of 2 over square root of 2 = 1

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