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Roman55 [17]
3 years ago
14

St. Patrick's Day Problem Solving

Mathematics
1 answer:
IgorC [24]3 years ago
4 0
Maybe the answer 3.5 I don’t know
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To buy concert tickets there is a service charge and they cost per ticket. Right in equation to show the cost for any number of
Maksim231197 [3]

Answer:

The answer would be:

B. y=18x+4

Step-by-step explanation:


6 0
3 years ago
PLEASE HELP PLEASEEEE
ivann1987 [24]

The domain and simplified terms are marked below

7 0
3 years ago
Explain the geometric efect of z if you multiply z by ????????, where<br> ???????? = 1 + i
BartSMP [9]

Answer:

You will obtain a complex number rotated by an angle of 45 degrees (counterclockwise) with a modulus scaled by √2

Step-by-step explanation:

In order to see the effect of multiplying z by 1 + i, you can use the representation of complex numbers in the <em>Polar Form</em>. This representation gives you the angle formed by the complex number and the real axis and the distance from the origin to the point.

Let z=a+ib represent a complex number.<em> The Polar</em> Form is:

z = |z| (Cosα + iSinα)

Where |z| is the modulus of the complex number and α is the angle formed with the real axis.

|z| = √a²+b²

α= arctan (b/a)

The multiplication in<em> Polar Form</em> is:

Let Z0 and Z1 represent two complex numbers

Z0= |Z0| (Cosα + iSinα)

z1= |z1|(Cosβ + iSinβ)

The multiplication is:

Z0.Z1 =  |Z0||Z1| [Cos(α+β) + i Sin(α+β)]

Notice that when you multiply complex numbers, you are adding angles and multiplying modulus. The addition of angles can be seen as a rotation of the complex number on the plane and the multiplication of modulus can be seen as changing the modulus of the complex number.

The given number 1+i in the Polar Form is:

z = |z| (Cosα + i Sinα)

|z| = √1²+1² = √2

α = arctan(1/1) = 45°

Therefore, you will obtain a complex number rotated by an angle of 45 degrees with a modulus scaled by √2

8 0
3 years ago
Determine the measure of angle ECB.
Novosadov [1.4K]

Answer:

4) 91.75

Step-by-step explanation:

7x+20+9x-4=180

16x=164

x=10.25

7(10.25)+20=

71.75+20=91.75

3 0
3 years ago
Read 2 more answers
What is the approximate circumference of a circle with a radius of km? Use A. km B. km C. km D. km
IceJOKER [234]
The area of a circle is pi * radius^2, so it would be km^2 pi.

πkm²
3 0
3 years ago
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