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3 years ago

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I need help fast plz- I will give brainliest

1 answer:

kipiarov [429]3 years ago

6 0

Y=5x the m would be 5 it is the slope

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Find the product of z1 and z2, where z1 = 7(cos 40° + i sin 40°) and z2 = 6(cos 145° + i sin 145°).

Oduvanchick [21]

For two complex numbers $z_1=re^{i\theta}=r(\cos\theta+i\sin\theta)$ and $z_2=se^{i\varphi}=s(\cos\varphi+i\sin\varphi)$ , the product is

$z_1z_2=rse^{i(\theta+\varphi)}=rs(\cos(\theta+\varphi)+i\sin(\theta+\varphi))$

That is, you multiply the moduli and add the arguments. You have $z_1=7e^{i40^\circ}$ and $z_2=6e^{i145^\circ}$ , so the product is

$z_1z_2=7\times6(\cos(40^\circ+145^\circ)+i\sin(40^\circ+145^\circ)=42(\cos185^\circ+i\sin185^\circ)=42e^{i185^\circ}$

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3 years ago

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The diameter of a circle 8 inches whats is the area?

pshichka [43]

Answer:

25.12inch^2

Step-by-step explanation:

Area= pi r^2 = 3.14 x 8 =25.12inch^2

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4 years ago

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8a-2b+12a-2a-4b<br><br> show how to simplify the expression. Write the answer the factored form

Trava [24]

$8a-2b+12a-2a-4b=8a+12a-2a-2b-4b=18a-6b$

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3 years ago

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A 2L punch recipe calls for orange and ginger ale in the ratio of 2:5

Nastasia [14]

Answer:

a) 4/7 L = 0.57 L

b) 25/7 L = 3.57 L

Step-by-step explanation:

The ratio of orange juice to ginger ale is 2:5.

Add 2 + 5 = 7.

The ratio of orange juice to ginger ale to total drink is 2:5:7.

a) The fraction of orange juice is 2/7 of the total drink.

To make 2 L, you will need 2/7 of 2 L to be orange juice.

2/7 * 2 L = 4/7 L = 0.57 L

b) The fraction of ginger ale is 5/7 of the total drink.

5/7 * 5 L = 25/7 L = 3.57 L

5 0

3 years ago

-4х-y= 24 find the missing value ( ,8)

astraxan [27]

Answer:

- 4

Step-by-step explanation:

- 24

7 0

3 years ago