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Nataly_w [17]
3 years ago
6

Which is equivalent to (3 + 2i)(3 - 2i)? A) 5 B) 6 C) 9 D) 13

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
8 0

Answer: D

Step-by-step explanation:

(3 + 2i) (3-2i) = 13

olga2289 [7]3 years ago
5 0
The answer to the question is D) 13
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3 0
4 years ago
Please help!!!!!!!!!!!!!!!
Katyanochek1 [597]
X and y vary inversely:
y=k/x

y=8/3 when x=8
8/3=k/8

Solving for k:
8(8/3)=k
64/3=k
k=64/3

y=k/x
y=(64/3)/x
y=(64/3)(1/x)
y=64/(3x)

when x=4→y=64/(3x)=64/(3(4))→y=16/3

Answer: Second Option y=64/(3x); 16/3
6 0
3 years ago
What is the value of the x-intercept for the graph of 4x-5y=40?
Crank
I believe its 4/5 because when you isolate y, you have to divide 5 and 4 but you Can just leave it in its decimal form.
6 0
3 years ago
The ice skating rink charges an hourly fee for skating and $3 to rent skates for the day. Gillian rented skates and skated for 3
Vitek1552 [10]

Answer:

c(x) = 6x + 3

Step-by-step explanation:

c(x) = 6x + 3

he skated for 3 hrs and was charged $21

c(3) = 6(3) + c(3) = 18 + 3

c(3) = 21

correct....so it is c(x) = 6x + 3

p.s please mark this question as brainleist

Thx

8 0
3 years ago
I need the equation of the line in the graph
sattari [20]
First of all, we know that it's a linear equation, which means it'll have to be y=mx+b.

Identify your points.
(0, 0) and (5, 4).

Now find the slope by doing 
m = (y₂ - y₁)/(x₂ - x₁)
m = (4 - 0)/(5 - 0)
m = 4/5
So the slope is 4/5 or 0.8.

Now set the equation up. You have a point and the slope, so use the point-slope equation.
y - y₁ = m(x - x₁)
y - 4 = 4/5(x - 5)
y - 4 = 4/5x - 4
y = 4/5x

So the equation of the line is y=4/5x.
8 0
3 years ago
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