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m_a_m_a [10]
3 years ago
11

(4-5i)(3-6i) tell me the answer

Mathematics
1 answer:
Irina18 [472]3 years ago
3 0

Answer:

Step-by-step explanation:

(4-5i)(3-6i) = 4*(3-6i) - 5i(3 - 6i)

= 4*3 - 4*6i - 5i*3 + 5i*6i

= 12 - 24i - 15i + 30i²

= 12 - 39i + 30 * (-1)                {i² = -1}

= 12 -30 - 39i

=  -18 - 39i

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The perimeter of a playing field for a certain sport is 214 ft. The field is a rectangle, and the length is 41 ft longer than th
malfutka [58]

Step-by-step explanation:

Perimeter of a rectangle = 2(L+W)

L is the length of the rectangle:

W is the width of the rectangle.

Given

Perimeter = 214feet

If the length is 41 ft longer than the width, then L = 41+W

Substitute L = 41+W into the formula:

P = 2(L+W)

214 = 2(41+W+W)

214 = 2(41+2W)

214 = 82+4W

4W = 214-82

4W = 132

W = 132/4

W = 33 feet

Since L = 41+W

L = 41+33

L = 74 feet

Hence the dimension of the field is 74ft by 33ft

<em>The width of the playing field is 33feet</em>

8 0
3 years ago
105 divided by 3<br> long division estimating please show your work
UNO [17]
35 I had this for a test the answer is

5 0
3 years ago
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Find the measure of RST.
almond37 [142]

Answer:

30°

Step-by-step explanation:

8 0
2 years ago
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Does anyone know the answer to this ???
Jlenok [28]
<h2>C. ΔQRS ≅ ΔGFE </h2>

ΔQRS ≅ ΔGFE because :

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∠R = ∠F = 60° ( corresponding part )

∠S = ∠E = 65° ( corresponding part )

QS = GE = 16 ( corresponding part )

Therefore , the correct answer is :-

<h3>C. ΔQRS ≅ ΔGFE </h3>

8 0
3 years ago
What is the lengthof a hypotenuse of the right triangle ABC in the figure
Harrizon [31]
There is no figure. 
but you can use A^2 + B^2 = C^2
C is your hypotenuse. 
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3 years ago
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