3 years ago

If x = (1,2,3), y = (1,3,6,9,12)

Mathematics

1 answer:

solong [7]3 years ago

4 0

X=c-b/a this what i came up with

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<img src="https://tex.z-dn.net/?f=6%2F5%20%28cos%28120%29%20%2B%20isin%28120%29%29%203%2F5%20%28cos%2845%29%20%2B%20i%20sin%2845

marysya [2.9K]

The product is equal to:

$\frac{18}{25}(cos(165) + i*sin(165))$

<h3>How to solve the product?</h3>

Remember that we can write a complex number in polar form as:

$R*e^{i*a} = R*(cos(a) + i*sin(a))$

Then the given product:

$\frac{6}{5}*(cos(120) + i*sin(120))*\frac{3}{5}*(cos(45) + i*sin(45))$

can be rewritten to:

$(\frac{6}{5}*e^{i*120})*(\frac{3}{5}*e^{i*45})$

Now is easier to solve the product:

$(\frac{6}{5}*e^{i*120})*(\frac{3}{5}*e^{i*45})\\\\= \frac{6}{5} *\frac{3}{5} *e^{i*(120 + 45)}\\\\= \frac{18}{25}*e^{i*165}\\\\= \frac{18}{25}(cos(165) + i*sin(165))$

If you want to learn more about complex numbers:

brainly.com/question/10662770

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4 0

2 years ago

What is the simplified ratio of female to male students in a class, if there are 18 boys and 9 girls?

NNADVOKAT [17]

9:18 = 1:2
There are 1 to 2 females to males

8 0

2 years ago

Which two equations are equivalent

Naya [18.7K]

Answer: a and b

Step-by-step explanation:

8 0

2 years ago

A train leaves at 11.15 and arrives at its destination at 12.23. If the train travelled 95 km, what was it's average speed in km

xxMikexx [17]

Answer:

Average speed v = 83.8 km/h

Step-by-step explanation:

Given;

Distance travelled = 95 km

Time taken t = 12.23 - 11.15 = 1 hour 8 minutes

t = 1 + 8/60 hours = 1.133 hours.

Average speed v = distance travelled/time taken

substituting the values;

v = 95 km ÷ 1.133 hours

Average speed v = 83.8 km/h

4 0

2 years ago

May you please help me fix this I am confused

andreev551 [17]

Answer:

just put the 35 not increase

Step-by-step explanation:

4 0

2 years ago