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Sholpan [36]
3 years ago
13

Multiply and simplify the following complex numbers: (5 – 5i) . (-3+5i)

Mathematics
2 answers:
Rama09 [41]3 years ago
7 0

Step-by-step explanation:

(5 – 5i) . (-3+5i)

=-15+25i+15i-25i²

=-25i²40i-15

vladimir1956 [14]3 years ago
5 0

Answer:

-25i^2+10i-15

Step-by-step explanation:

(5 – 5i) . (-3+5i)

foil

1)5*-3=-15

2)5*5i=25i

3)-5i*-3=15i

4)-5i*5i=-25i^2

put that all together

-25i^2+15i+25i-15

simplify

-25i^2+40i-15

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What’s the correct graph ?
maks197457 [2]

Answer:

The correct graph is graph E.

Step-by-step explanation:

We can tell this because we know the graph must stay below 3. So any graph over 3 gets thrown out. We also know that it must not go further down than -3. This is because any number over -3 as an input, when taking an absolute value, would be greater than 3.

Graph E shows numbers that are all less than 3 and greater than -3.

8 0
3 years ago
Find the product <br> -12 • (-2) <br><br> A. 10<br><br> B. 24 <br><br> C. -24<br><br> D. -14
svetoff [14.1K]
12 x 2 = 24

When you multiply two negative numbers, the answer will be a positive
When you multiply one negative and one positive, the answer will be negative.


Using that rule:

(-12)(-2) = 24

24 is your answer

hope this helps
6 0
3 years ago
Write an equation for each description. a number increased by 10 is 114
laila [671]

x+10=114

114-10=x

x=104

3 0
3 years ago
Read 2 more answers
How many students in the marching band are girls
Hoochie [10]

Answer:

Hello,

If 7/10 boys represent 28 boys so, 3/10 girls ? how many girls ?

cross product

7/10 > 28

3/10 > ?

3/10*28/(7/10)=12

There are 12 girls


Step-by-step explanation:


3 0
3 years ago
Naglakad si Ruben ng 900 sentimetro samantalang si Jaime ay naglakad ng
Gelneren [198K]

Sagot:

100 cm

Hakbang-hakbang na paliwanag:

Kung ganoon :

Distansya na sakop ng Ruben = 900 centimetri

Distansya na sakop ng Jamie = 10 metro

Pagko-convert sa centimeter:

100 cm = 1 m

x cm = 10 m

Paggamit ng multiplikasyon ng krus:

x = 100 * 10

x = 1000 cm.

Dahil dito Distansya ni Jamie = 1000 cm

Distansya sa pagitan ng Jamie at Ruben;

1000 cm - 900 cm = 100 cm

3 0
3 years ago
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