All categories

2 years ago

Which pair of complex factors results in a real number product? 15(–15i) 3i(1 – 3i) (8 + 20i)(–8 – 20i) (4 + 7i)(4 – 7i)

Mathematics

2 answers:

photoshop1234 [79]2 years ago

6 0

Answer:

(4 + 7i)(4 – 7i)

Step-by-step explanation:

This pair will produce a real answer because they are complex conjugates.

Complex conjugates ( a+bi) (a-bi) when multiplied together form a real number ( a^2 + b^2)

I am Lyosha [343]2 years ago

6 0

Answer:

D. (4+7i)(4-7i)

Step-by-step explanation:

You might be interested in

Which answer is correct?

dalvyx [7]

(x-p)(x-q)
x^2 -qx -px + pq
x^2 -(q+p) x +pq
so the constant here is the product of p & q
the answer is A

8 0

2 years ago

Read 2 more answers

Three screenshots, answer em all pls

Shtirlitz [24]

I just did the second one, the one that looks this a side ways L,
here are the points
(4,4). (5,4). (3,1). (3,2). (4,2). hope this helped

6 0

2 years ago

Can someone assist me with these Algreba questions olease?

Delicious77 [7]

the answer have to be would be (-3, 1)

4 0

3 years ago

The questions is on the picture

allochka39001 [22]

Answer:

EASY:

Step-by-step explanation:

-7 > -12

2 > -2

-5 < -3

|-9| is maybe 9.

|13| is 13.

|-5| is maybe 5.

5 0

2 years ago

Read 2 more answers

Mr. Clark traveled 456.4 km in 14 days.

xeze [42]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

<h3><u>Distance travelled each day is</u> : </h3>

32.6 km

<h3><u>Explanation</u> : </h3>

Distance travelled in 14 days is : 456.4 km

And if he travels same Distance each day, so let the Distance travelled on each day be x

According to question ~

$\qquad \sf \dashrightarrow \: 14 \times x = 456.4$

$\qquad \sf \dashrightarrow \: x = 456.4 \div 14$

$\qquad \sf \dashrightarrow x = \: 32.6 \: \: km$

So, he travels 32.6 km per day

5 0

2 years ago