MATHEMATICS HIGH SCHOOL

1a) Which equation demonstrates the commutative property of addition for complex numbers? A: (5 - 10i)[(0 - 10i) +(5 +0i)] = [(5 - 10i)(0 - 10i)]+[(5 - 10i)(5 +0i)]

B: (10 - 5i) + (5 - 10i) = (5 - 10i) +(10 – 5i)

C: (5+ 10i)+(- 5 - 10i) = 0+ Oi

D: [(0 - 5i)+(5-i)] +(5 +i) = (0 - 5i)+[(5 - i) +(5+i)]

1b) Which of the following demonstrates the commutative property of multiplication?

A: (8+6i)(4+2i)=(4+2i)(8+6i)

B: (7-6i)(0+2i)=(7+2i)(0-6i)

C: (2+8i)(2-8i)=20

D: (-5+3i)(-1+i)=(5-3i)(1+i)

Answers

Answer 1

Answer:

Answer:

The answer to 1a is B and the answer to 1b) is A.

Step-by-step explanation:

I got my answer right on the quiz. So, it's actually a lot easier than it seems. Imagine 4+2=2+4 or (8)(4)=(4)(8). That is commutative property of addition and multiplication just simper. In this case B and A are the same thing just with complex numbers.

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12 divided by 8 into a mixed number

How do we do this problem 3(b3-5)

Answers

Well using the distributive property you get 3b3 - 15

3(b3-5)
=3b3-15

hope this helps

Find the distance between A and B

Answers

Answer:

The distance between A and B is 2.6

Step-by-step explanation:

We know that there are 2 whole numbers from -1 to 0 and 0 to 1. Then we can add the 0.3 from both sides. 0.3 plus 0.3 is 0.6.

I hope this helped and if it did I would appreciate it if you marked me brainliest, thank you and have a nice

day

Answer:

27 cm or 2in and 6cm!

Step-by-step explanation:

count the lines.

Write the linear equation between the points: (-4, 5) and (0, -2)a
b
y=7/4x+2
y=-7/4x-2
y=-4/7x-2
y=4/7x-2
C С
d

Answers

Answer:

Hey there!

Slope: 7-3/1-(-1), which is equal to 4/2, or 2.

Point slope: y-7=2(x-1)

So choice B is correct.

Step-by-step explanation:

Evaluate the summation of 20 times 0.5 to the n minus 1 power, from n equals 3 to 12.

Answers

Answer:

The sum of the series is 9.99

Step-by-step explanation:

We are given the series $\sum_(n=3)^(12)20(0.5)^(n-1)$ .

So, $a_(n)=20(0.5)^(n-1)$ , where n=3 to 12

Then, we have,

$1.\ a_(3)=20(0.5)^(3-1)\na_(3)=20(0.5)^(2)\na_(3)=5$

$2.\ a_(4)=20(0.5)^(4-1)\na_(4)=20(0.5)^(3)\na_(4)=2.5$

Thus, the common ratio is $r=(2.5)/(5)=0.5$

Since, the sum of first n terms of a series is $S=(a_(1)(1-r^(n)))/(1-r)$ .

As n = 3 to 12, then the number of terms = 10, first term=a₃= 5 and r= 0.5

So, the sum of 10 terms is $S=(5(1-(0.5)^(10)))/(1-0.5)$

i.e. $S=(5(1-0.00098))/(0.5)$

i.e. $S=(5* 0.99902)/(0.5)$

i.e. $S=(4.9951)/(0.5)$

i.e. S = 9.99

Hence, the sum of the series is 9.99

Answer: 9.99

Step-by-step explanation:

I just took the quiz!

Round 34 449 to the
a) nearest 10.
b) nearest 100.
c) nearest 1000.

Answers

Round 34,449 nearest 10.

Answer:

34 450

34 400

34 000

this is the answer your welcome

I'm struggling on this, please can someone help me?

Answers

Answer:

The vertices of triangle A' are (1, -1), (4, -1), and (4, -3).

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