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dsp73
3 years ago
15

Need help. 45 -45 -90 X= Y=

Mathematics
1 answer:
7nadin3 [17]3 years ago
6 0

Answer:

Please refer to the attachment

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Perform the indicated operation. (5 - 2i 2) 2
nalin [4]
ANSWER


(5 - 2 {i}^{2} ) ^{2}  = 49


EXPLANATION


The given expression is


(5 - 2 {i}^{2} ) ^{2}


This is an expression containing a complex number.



Recall that in complex numbers,

{i}^{2}  =  - 1

The expression now becomes,


(5 - 2 {i}^{2} ) ^{2}  = (5 - 2 ( - 1) ) ^{2}


This implies that,


(5 - 2 {i}^{2} ) ^{2}  = (5  + 2 ) ^{2}



This will simplify to,


(5 - 2 {i}^{2} ) ^{2}  =  {7}^{2}


This eventually gives us,



(5 - 2 {i}^{2} ) ^{2}  = 49

7 0
4 years ago
Read 2 more answers
Five gerbils cost p dollars. How many dollars will it cost to buy 1 gerbil? How many dollars will it cost to buy g gerbils? How
Alex787 [66]
1 gerbil will cost p/5 dollars. g gerbils will cost g*p/5. 5/p gerbils would cost 1 dollar. And for d dollars you would get 5d/p gerbils.
6 0
4 years ago
Mary is twice as old as jean and seven years older than hazel. The sum of their ages is 53. How old is each person?
weeeeeb [17]

Answer:

Step-by-step explanation:

M = 2J

M = H + 7

M + J + H = 53

Then combine first two equations and solve in terms of J:

2J = H + 7 --> H = 2J - 7

Substitute for H & M in last equation:

2J + J + 2J - 7 = 53

5J - 7 = 53

5J = 60

J = 12

Then plug J into other equations:

M = 24

J =12

H = 17

4 0
4 years ago
Ratio help! *grade 9 work* help if you can :)
Bogdan [553]

Answer:

1. 10 : 24 = 5 : 12 = 20 : 48 = 40 : 96

2. 2 : 3 : 5 = 4 : 6 : 10 = 8 : 12 : 20

4 0
4 years ago
A circular rug covers 48 square feet. What is the radius? Use 3 for pie.
Alex17521 [72]

Answer:

I believe it would be 24 sq ft. Radius is a line draw from the center of the circle out, also known as 1/2 of the circle. So by dividing 48 by 2 you should get 24.

8 0
2 years ago
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