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4 years ago

What is scale factor ?

Mathematics

2 answers:

Marta_Voda [28]4 years ago

7 0

A scale factor is a number which scales,or multiples, some quantity... hope this helps!

Ivanshal [37]4 years ago

7 0

Scale factor is two similar geometric figures and the ratio of their corresponding

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Solve <br> 2z = modulus of z + 2i

Marta_Voda [28]

I assume the equation is

$2z=|z|+2i$

then let $z=x+iy$ .

$2x+2iy=\sqrt{x^2+y^2}+2i$

$2x+2i(y-1)=\sqrt{x^2+y^2}$

The right side is real-valued and positive, and only on the left side do we have an imaginary term, which tells us

$2(y-1)=0\implies y=1$

Then

$2x=\sqrt{x^2+1}$

$4x^2=x^2+1$

$3x^2=1$

$x=\pm\dfrac1{\sqrt3}$

but again we omit the negative solution, so that

$\boxed{z=\dfrac1{\sqrt3}+i}$

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3 years ago

Grade low in math help if you can :) Geometry

mestny [16]

Answer:

C) 10 inches

Step-by-step explanation:

I think the simplest way to do this is as follows:

divide 75 by 15 to get how many times you need to multiply 2in by

75/15=5

since 15(5)=75 or the actual size of the airplane,

2(5)=10 which is the size of the model airplane

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3 years ago

An airplane flies 1700 km in 2 1/2 hours. what is its average speed in kilometers per hour

PilotLPTM [1.2K]

Answer:

680 kilometer per hour

Step-by-step explanation:

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3 years ago

Which is the graph of f(x)

padilas [110]

I don’t understand please put it in a form i could possibly understand

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3 years ago

A rectangular garden has a base of 6 feet and a height of (2x + 9) feet. What is the area of the garden if x = 7 ?

klio [65]

Answer:

A = 138 ft^2

Step-by-step explanation:

the height is 2x+9

Let x =7

The height is 2(7)+9 = 14+9 = 23

The area is l*w

A = 6*23 =138 ft^2

8 0

3 years ago