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4 years ago

(6x3 + 18x2) − 3x2 =

Mathematics

1 answer:

lys-0071 [83]4 years ago

4 0

That is 6x³+18x²-3x²=6x³+15x²

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Find the equation of a vertical line passing through the point B(2,-1)

Softa [21]

Answer:

x = 2

Step-by-step explanation:

In a vertical line, all x-coordinates are the same.

x = 2

8 0

3 years ago

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I need this answer asap

padilas [110]

Answer:

$a=64,b=0$

Step-by-step explanation:

Given;

$z=-1-\sqrt{3}i$

$r=\sqrt{(-1)^2+(-\sqrt{3})^2} =2$

$\phi =\tan^{-1}(\frac{-\sqrt{3} }{-1})=\frac{\pi}{3}$

$\arg(z)=2\pi-\frac{\pi}{3} =\frac{5\pi}{3}$

Apply DeMoivre's Theorem;

$z^n=r^n(\cos(n \theta) + i\sin(n \theta))$

$\Rightarrow z^6=2^6(\cos(6\times \frac{5\pi}{3}) + i\sin(6\times \frac{5\pi}{3}))$

$\Rightarrow z^6=64(\cos(10\pi) + i\sin(10\pi))$

$\Rightarrow z^6=64(1+ 0i)$

$\Rightarrow z^6=64+ 0i$

$\therefore a=64,b=0$

7 0

4 years ago

Graph the inequality - 2x + y<-5<br> please help

kicyunya [14]

Answer: The website I'm using is called Desmos.

Step-by-step explanation:

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4 years ago

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How many edges and vertices does a prism with a 50 sided end face have

Svet_ta [14]

Each with 220 sides,meaning 440 edges on the end

8 0

3 years ago

Ill give brainliest if you help me + 20 points :)

lbvjy [14]

Answers:

21.75

1.37

Step-by-step:

Dozen flyers:price

4:7.25

12:x

To solve this mulitply 7.25 by 3 (because this is what we multiplied 4 by to get 12) 7.25*3=21.75

Question 2:

We can write teh following equation

.49+.22(x-1)=price

This is essentially saying that we pay .49 for the first ounce and .22 for every ounce after that

We can plug in an x value to get

.49+.22(5-1)

.49+.22(4)

.49+.88

1.37

Question 3:

We can write the following equation

x+2=y

We need to find out what happens when x=8

8+2=10

Question 4:

We can solve this with ratios

x:y

1.5:4.5

5:x

To solve just multiply 4.5 by 10/3 and get 15

We can just multiply

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3 years ago

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