All categories

4 years ago

(√5+√17i)(√5-√17i)=? (give answer in standard a+bi form)

Mathematics

2 answers:

vlada-n [284]4 years ago

8 0

Answer:

Step-by-step explanation:

hope this belps lol yay

Zina [86]4 years ago

3 0

Answer:

Step-by-step explanation:

Given

( $\sqrt{5}$ + $\sqrt{17}$ i )( $\sqrt{5}$ - $\sqrt{17}$ i ) ← expand factors using FOIL

= ( $\sqrt{5}$ )² - ( $\sqrt{17}$ )² i² ← i² = - 1

= 5 - 17(- 1)

= 5 + 17

= 22

You might be interested in

Are the ratios 13:14 and 1:2 equivalent?

eduard

Answer:

NO!

Step-by-step explanation:

They are not equivalent. We can check this. If you rewrite them as fractions 13/14 and 1/2, you can cross multiply and see if they are equal. Which they are not. Also, you could just guess.... think of 13:14 as 13 out of 14. And 1:2 as 1 out of 2. You can tell that 13/14 is much greater than 1/2.

6 0

3 years ago

Adam has 17.45 kg of flour, and he uses 6.4 kg to make hot cross buns. The remaining flour is exactly enough to make 15 batches

olchik [2.2K]

_
0.736 kg in each batch of scones

8 0

4 years ago

Can some do this for me its like due tomorrow

Luden [163]

Answer:

need more info, can't solve if it's very hard to read.

Step-by-step explanation:

7 0

2 years ago

I need help on this question i uploaded it but no one has seen it

Margaret [11]

hi ! so the answers are below ...

<h3>1. we need to add both angles to find angle QST</h3><h3> <u>5</u><u>2</u><u> </u><u>+</u><u> </u><u>4</u><u>7</u></h3><h3> <u>=</u><u> </u><u>9</u><u>9</u></h3>

<h3>2. since the angles are on a straight line, to find the angle NPM we need to subtract the given angle with 180⁰ since the total of a straight line is 180⁰ ( hope you understand )</h3>

anyways...

hope that helped and let me know if you have any more questions :)

8 0

3 years ago

8. The number of pies sold by the Chipper Bakery is

notsponge [240]

Eight I think, but you’d have to double check, as I can’t quite understand the
Wording/format.

6 0

3 years ago