3 years ago

Multiply the following complex numbers: (9-21)(7 +61)

Mathematics

2 answers:

labwork [276]3 years ago

8 0

Answer:

-816

Step-by-step explanation:

you subtract 9-21 to get -12 then you take 7+61 which is 68 and then you multiply them to get -816

Andrew [12]3 years ago

3 0

Answer:

-816

Step-by-step explanation:

-12*68= -816 this is probably wrong but this is what i got

You might be interested in

Please help! 10 ∑ 2i-9 i=3

pentagon [3]

$\sum\limits_{i=3}^{10}(2i-9)=2(3)-9+2(4)-9+2(5)-9+2(6)-9+2(7)-9\\\\+2(8)-9+2(9)-9+2(10)-9\\\\=6-9+8-9+10-9+12-9+14-9+16-9+18-9+20-9\\\\=90-72=18$

6 0

3 years ago

13. What is the measure of MO? a. 90 c. 45 b. 180 d. Cannot be determined

choli [55]

The answer to this problem is 45

5 0

2 years ago

There are 30 computers in the media lab there are 4 activity booklets for every 2 computers in the media lab.

AURORKA [14]

Answer:

There are 60 activity booklets in the media lab.

Step-by-step explanation:

- 30/2 = 15

Why divide those numbers?

For every 2 computers in a lab with 30 computers means you have to divide

- 15x4 = 60

Why multiply those numbers?

4 activity booklets for every 2 computers in a lab of 30 computers, so multiply

I hope this helps.

7 0

3 years ago

Choose the expression which represents the simplest form of (-4x2)

Lelechka [254]

Answer:

Step-by-step explanation:

No idea

7 0

3 years ago

Suzy has 7 separate rings as shown in the figure on the left. She wants to make one open chain as shown in the figure on the rig

Savatey [412]

Answer:

every other one

Step-by-step explanation:

to put it specifically rings, 2, 4 and 6

3 0

3 years ago