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kherson [118]
3 years ago
15

Will give brainliest! The value of y varies directly with x. When y = 30, x = 5. What is the value of y when x = 7.

Mathematics
2 answers:
lutik1710 [3]3 years ago
3 0

Answer:

42

Step-by-step explanation:

If we suppose the value is constant,

Divide 30/5 we get 6.

so now we know for every 1 x we get 6 y.

Multiply 6 times 7 = 42.

The value of y = 42 when x = 7.

LuckyWell [14K]3 years ago
3 0

Answer:

Y=42

Step-by-step explanation:

30÷5=6

so 7x6=42

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3 years ago
Use DeMoivre's Theorem to find (3cis*pi/6)^3
Sonbull [250]

The correct value of (3cis(pi/6))³ is 27i.

<h3>What is Complex Number?</h3>

Complex numbers are numbers that consist of two parts — a real number and an imaginary number. Complex numbers are the building blocks of more intricate math, such as algebra.

Given the complex number in polar coordinate expressed as

z = r(cos∅+isin∅)

zⁿ =  {r(cos∅+isin∅)}ⁿ

According to DeMoivre’s Theorem;

zⁿ =  rⁿ(cosn∅+isinn∅)

Given the complex number;

(3cis(pi/6))³

= {3(cosπ/6 + isinπ/6)}³

Using  DeMoivre’s Theorem;

= 3³(cos3π/6 + isin3π/6)

=  3³(cosπ/2 + isinπ/2)

= 3³(0 + i(1))

= 27i

Thus, the correct value of (3cis(pi/6))³ is 27i.

Learn more about Complex number from:

brainly.com/question/10251853

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7 0
2 years ago
Jonathon drove 220 miles in 4 hours. assuming that he drives at the same rate, how far will he travel in 7 hours?
Art [367]
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3 0
4 years ago
Can someone help me ? Please
jonny [76]

Answer: if you go to calculator soup you can look up fraction calc or simplily just look up 3 and 1 half divided by 2 thirds i hope this heloed

Step-by-step explanation:

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3 0
3 years ago
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stiks02 [169]

We have been given a graph of piecewise function. Using that we have to select the function from given choices which is represented by graph.

g(x) = −2x, −2 < x < 0

Answer:

NO. Because g(x) = −2x has negtive slope so that means it goes downward also there is no y-intercept in g(x) = −2x but the only graph that has y-intercept in given graph goes upwawrd so that can't be answer.


g(x) = −2, x < −2

Answer:

YES. Because g(x) = −2 is a horizontal line which is only on the left side oof x=-2. Graph of this part is present in given graph. So yes it is answer.


g(x) = x − 2, −2 < x < 1

Answer:

NO. Because g(x) = x−2 has y-intercept at y=-2 and slope 1 so that means graph of g(x)= x-2 must be going upward and crossing at y=-2 butt there is no such graph. Hence this can't be answer.



g(x) = −2x + 6, x ≥ 1

Answer:

YES. Because g(x) = −2x+6 satisfies the graph which is going downward.



g(x) = x/2+ 1, –2 ≤ x < 1

Answer:

YES. Because g(x) = x/2+ 1 satisfies the graph which is going downward.


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3 years ago
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