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Marizza181 [45]
3 years ago
5

Pls pls pls help i rlly need the asnwer soon

Mathematics
2 answers:
CaHeK987 [17]3 years ago
8 0
The answer to 1 and 2 is 5 and 180
anygoal [31]3 years ago
5 0

Answer:

(1. 5

(2. 180

(3. 900

(4. 5180=900

Step-by-step explanation:

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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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3 years ago
The label on a bag of chocolates states that there are 0.384 pounds of chocolates.
charle [14.2K]

<u>Answer:</u>

<u>Answer:The chocolate are 0.0042 lighter than the stated on the label</u>

4 0
2 years ago
Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = 9x2 – 36X?
Fiesta28 [93]
Assuming I understand your question correctly, in that you’re looking for just some descriptions of the differences between the functions. If so, then I’d say:

First graph both functions, the f(x) and the g(x). Then spot the differences.
Note that the g(x) function has shifted towards the right compared with the f(x) function.
Another way that the g(x) differs from the f(x) function is that it’s stretched. The vertex is in the IV quadrant for g(x) rather than at the origin for f(x).

I hope that helps.

5 0
3 years ago
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The art club had an election to select a president. 57 members voted in the election and 19 did not vote. What percentage of the
laila [671]

Answer:

75% voted

Step-by-step explanation:

you add the 75 to 19 to figure out the total amount of people in the club.

75+19=76

Then you divide the people who voted which is 57 by the total amount of people in the club which is 76

57/76=0.75

then you move the decimal two places to the left and you get 75%


5 0
3 years ago
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