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MissTica
2 years ago
14

Write (7 + 3i) + (6 − i) as a complex number in standard form.

Mathematics
2 answers:
Minchanka [31]2 years ago
7 0
I believe its 13 + 6i. Im not exactly 100% sure
Tamiku [17]2 years ago
6 0
45 + 11i

To do problems like these, treat them as you would multiplying two binomials. Just FOIL them, and keep in mind that (i)^2 is equal to -1.
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It cost Benjamin $1.35 to send 9 text messages how much would it cost to send 118 text messages
Allushta [10]

Answer:

it costs $17.7

Step-by-step explanation:

1.35/9 is 0.15

0.15 * 118 = 17.7

3 0
2 years ago
the number of calories consumed over multiple days can be determined form a person average consumption of 2000 calories per day.
dem82 [27]
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8 0
2 years ago
Kevin is three years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel.
GarryVolchara [31]

Answer:

I believe that Kevin is 6 years old now.

Step-by-step explanation:

I used the guess and check method to figure this out.

First, I began by making Daniel 1 years old, two years ago. Kevin was 4 times as old as Daniel two years ago, so he would be 4 at the time. Now, Daniel would be 3 and Kevin would be 6 years old. The statement that Kevin is three years older than Daniel would confirm this, because 6-3=3.  Hope this helps, this is my first time answering:)

3 0
3 years ago
Unsure on if I have the right answer worked out someone please say what you've got and how you've done it please
PilotLPTM [1.2K]
The answer is at 7:12 a.m, did you get that?


3 0
3 years ago
Sum to n terms the series 7 +77 +777​
julia-pushkina [17]

Answer:

Step-by-step explanation:

=7 (1+11+111+1111......n)

=7/9 (9+99+999+9999....n)

=7/9 ((10-1)+(10^2-1)+(10^3-1)+....n)

=7/9 ((10+10^2+10^3...n)-(1+1+1+1.....n))

=7/9 ((10 (10^n-1)/(10-1))-n)

4 0
3 years ago
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