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podryga [215]
3 years ago
13

Can someone help me pleasee!! question 10 help a girl out :)

Mathematics
2 answers:
Alika [10]3 years ago
7 0

Answer:

52

Step-by-step explanation:

just finished taking it

Leviafan [203]3 years ago
7 0

Answer:

no

Step-by-step explanation:

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Divide: (5 + 4i) / (-3 – 2i)
Phantasy [73]

Answer:

<h2>-23/13 - 2/13i</h2>

Step-by-step explanation:

\frac{5+4i}{-3-2i}\\\\\mathrm{Apply\:complex\:arithmetic\:rule}:\\\\\quad \frac{a+bi}{c+di}\:=\:\frac{\left(c-di\right)\left(a+bi\right)}{\left(c-di\right)\left(c+di\right)}\:=\:\frac{\left(ac+bd\right)+\left(bc-ad\right)i}{c^2+d^2}\\\\a=5,\:b=4,\:c=-3,\:d=-2\\\\=\frac{\left(5\left(-3\right)+4\left(-2\right)\right)+\left(4\left(-3\right)-5\left(-2\right)\right)i}{\left(-3\right)^2+\left(-2\right)^2}\\\\Refine\\=\frac{-23-2i}{13}\\\\

\mathrm{Rewrite\:}\frac{-23-2i}{13}\mathrm{\:in\:standard\:complex\:form:\:}-\frac{23}{13}-\frac{2}{13}i\\

8 0
3 years ago
A convex polyhedron has faces that consist of 1 pentagon, 5 congruent equilateral triangles, and 5 congruent
-Dominant- [34]

Answer:

20

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If f (x) = -2(x + 7), then what is f (3)?
dezoksy [38]

Answer:

F(3)=-20

Step-by-step explanation:

just plug 3 for x.

4 0
4 years ago
The entry fee at a small fair is $1.50 for children and $4.00 for adults. On a certain day, 2200 people enter the fair and $5000
Sauron [17]

Answer:

The number of children attended the fair is 1520.

Step-by-step explanation:

We are given the following in the question:

Entry fee foe children = $1.50

Entry fee foe adult = $4.00

Total number of people in fair = 2200

Total money collected = $5000

Let x be the number of children and y be the number of adults in the fair.

Then, we can write the following equations:

x + y = 2200\\1.5x + 4y = 5000

Solving the two equations, we have:

1.5x + 1.5y = 3300\\1.5x + 4y = 5000\\\Rightarrow 2.5y = 1700\\y = 680\\x = 2200-680 = 1520

Thus, there were 1520 children and 680 adults in the fair.

8 0
3 years ago
If the number in the numerator of a unit rate is 1 what does this indicate about the equivalent unit rates
ANEK [815]
I have no idea but i did some research and i found that it means
5 0
3 years ago
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