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igomit [66]
3 years ago
7

What is the value of the product (3 – 2i)(3 + 2i)?

Mathematics
2 answers:
eimsori [14]3 years ago
6 0

Answer:

13

Step-by-step explanation:

(3 - 2i)(3 + 2i)

Expand

(9 + 6i - 6i - 4i^2)

Add

(9 - 4i^2)

Convert i^2

i^2 = (\sqrt{-1})^2 = -1

(9 - 4(-1))

Add

(9 + 4)

= 13

Semenov [28]3 years ago
3 0

Answer:

13.

Step-by-step explanation:

(3 - 2i)(3 + 2i)

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

= 9 - 6i + 6i - 4\sqrt{-1} ^{2}

= 9 - 4(-1)

= 9 + 4

= 13

Hope this helps!

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Taxi ride is 1.85 per mile with an initial 2.75 charge, what is the cost in dollars for a 20 mile taxi ride
kati45 [8]

Answer:$39.75

First, we have to find out how much would it be for a 20 mile taxi ride. To do this, we have to multiply. 20 x $1.85= $37.00.

Lastly, you have to find out how much the cost will be with the initial charge. To do this, we have to add. $37.00+$2.75=$39.75.

Hope this answered your question!

4 0
3 years ago
The equation of a parabola in the xy-plane is given as
Harrizon [31]

Answer:

B

Step-by-step explanation:

y=n(x+5)(x-3)

or y=n(x²-3x+5x-15)

or y=n(x²+2x-15)

=n(x²+2x+1-1-15)

=n(x+1)²-16n

y -coordinate of vertex=-16n

6 0
3 years ago
A rectangular solid measures 5 cm long by 3 cm wide by 1 cm high. What is the surface-area-to-volume ratio
siniylev [52]

Answer:

Answer below

Step-by-step explanation:

Yo uneed to find the Area/volume

The area of the rectangle is 2×(5cm×1cm)+2(3cm×1cm)+2(5cm×3cm)=10cm+6cm+30cm=36cm^2

Volume=5cm×3cm×1cm=15cm^3

Ratio: 36cm^2/15cm^3=12cm^2/5cm^3

8 0
2 years ago
There are 21 more days before the first big winter storm and the squirrel collects 12 acorns a day, how far away from her origin
alexandr402 [8]
She has 445 left after the bear ate some so
21 × 12 = 252
252 + 445 = 697 acorns

she should maybe bother the bear so he can't hibernate, or steal his food so he knows what it's like
6 0
3 years ago
Carmen rides her bicycle at a constant rate to the market. When she rides her bicycle back home along the same route, she bikes
fenix001 [56]

Answer:

takes 48 minutes

Step-by-step explanation:

8 0
3 years ago
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